Point-to-Point Protocol over Ethernet - using windows & cisco

PPPOE is a network protocol for encapsulation ppp in ethernet network. It is one of dial technology beside pptp and L2TP. It is usually used in adsl network, subcriber can access internet provider using user's credential (username and password) . PPPOE works in layer 2 network meanwhile PPTP work in Layer 3.

What I want to show you is the basic configuration using windows as a pppoe client and cisco 2600 as a pppoe server.

Here is the diagram :

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1. Create Virtual-Template :

VPN_SERVER(config)# interface Virtual-Template1
VPN_SERVER(config-if)# ip unnumbered FastEthernet0/1.81
VPN_SERVER(config-if)# ip tcp adjust-mss 1460

2. Enable vpdn and making vpdn-group :

VPN_SERVER(config)# vpdn enable
VPN_SERVER(config)# vpdn-group pppoe
VPN_SERVER(config-vpdn)# accept-dialin
VPN_SERVER(config-vpdn-acc-in)# protocol pppoe
VPN_SERVER(config-vpdn-acc-in)# virtual-template 1
VPN_SERVER(config-vpdn-acc-in)# exit
VPN_SERVER(config-vpdn)# lcp renegotiation always

3. Configure authentication & ip address pool :

Enable AAA and method-list :

VPN_SERVER(config)# aaa new-model
VPN_SERVER(config)# aaa authentication ppp default local
VPN_SERVER(config)# aaa authorization network default local

Create Username :

VPN_SERVER(config)# username fadly password 0 cisco

Create Ip pool :

VPN_SERVER(config)# ip local pool vpn_sce 192.168.100.1 192.168.100.100

Enable ppp authentication and assign pool :

VPN_SERVER(config)# interface Virtual-Template1
VPN_SERVER(config-if)# peer default ip address pool vpn_sce
VPN_SERVER(config-if)# ppp authentication pap chap

4. Enable pppoe in interface :

VPN_SERVER(config)# interface FastEthernet0/0
VPN_SERVER(config-if)# ip address 172.16.0.11 255.255.128.0 secondary
VPN_SERVER(config-if)# pppoe enable

5. Create pppoe client and Dial from windows XP :


























































6. Verify the pppoe session :

VPN_SERVER#sh user
Line User Host(s) Idle Location
* 66 vty 0 fadly idle 00:00:00 172.16.0.134

Interface User Mode Idle Peer Address
Vi1.1 fadly PPPoE 00:00:00 192.168.100.5

VPN_SERVER#


VPN_SERVER#sh vpdn

PPPoE Tunnel and Session Information Total tunnels 1 sessions 1

PPPoE Session Information
UID SID RemMAC OIntf Intf Session
LocMAC VASt state
278 841 0090.f55d.6dbc Fa0/0 Vi1.1 CNCT_PTA
000d.bd6c.3fc0 UP


VPN_SERVER#

VPN_SERVER#sh sss session
Current SSS Information: Total sessions 1

Uniq ID Type State Service Identifier Last Chg
278 PPPoE/PPP connected Local Term fadly 00:04:18


it is very straight forward :)

Basic PIX firewall configuration

This is the basic pix firewall configuration and concept

Firewall is networking device that can protect unauthorized internet users from accessing private network. it has the concept of inside / private network and outside / internet by assigning security level. The outside has a security level of 0 and inside has a security level of 100. Meaning that traffic from lower security level interface will not pass higher security level interface. We can modifiy the rule to make the traffic flow from outside interface to inside interface.


Diagram :



Basic Configuration

1. Set the hostname :

pixfirewall# configure terminal
pixfirewall(config)#hostname pix-jtpd


2. Set the password :

Login password :
pix-jtpd(config)# password cisco

Enable password :
pix-jtpd(config)# enable password cisco

3. Verifiying security level :

pix-jtpd# show nameif
Interface Name Security
Ethernet0 outside 0
Ethernet1 inside 100
pix-jtpd#

4. Set ip address :

interface Ethernet0
nameif outside
security-level 0
ip address 192.168.78.182 255.255.255.252
!
interface Ethernet1
nameif inside
security-level 100
ip address 192.168.78.186 255.255.255.252

Verify interface ip address :

pix-jtpd# sh interface ip brief
Interface IP-Address OK? Method Status Protocol
Ethernet0 192.168.78.182 YES manual up up
Ethernet1 192.168.78.186 YES manual up up
pix-jtpd#

Ping back to back ip address :

pix-jtpd# ping 192.168.78.181
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.78.181, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/10 ms
pix-jtpd# ping 192.168.78.185
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.78.185, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
pix-jtpd#

5. Configure default route

pix-jtpd(config)# route outside 0.0.0.0 0.0.0.0 192.168.78.181 1

pix-jtpd# show ip route
C 192.168.78.180 255.255.255.252 is directly connected, outside
C 192.168.78.184 255.255.255.252 is directly connected, inside
S* 0.0.0.0 0.0.0.0 [1/0] via 192.168.78.181, outside
pix-jtpd#

6. Configuring NAT and define subscriber network :

a. Set ip address to name :
pix-jtpd(config)# name 192.168.32.0 subscriber

b. Set subscriber route :
route inside chat-subs 255.255.255.0 192.168.78.185 1

c. Setting nat :
inside network :
pix-jtpd(config)# nat (inside) 1 chat-subs 255.255.255.0
pix-jtpd(config)# nat (inside) 1 192.168.78.184 255.255.255.252

global network :
global (outside) 1 192.168.78.188 netmask 255.255.255.255

NOTE : must configure route from PE to global (outside)

d. Veryfiy nat is working :

pix-jtpd# sh xlate
94 in use, 3299 most used
PAT Global 192.168.78.188(1095) Local 192.168.32.30(2182)
PAT Global 192.168.78.188(1053) Local 192.168.32.30(59266)
PAT Global 192.168.78.188(1052) Local 192.168.32.30(65524)
PAT Global 192.168.78.188(1051) Local 192.168.32.30(50954)

7. Making Rule / Access-list

Setting ACL :

pix-jtpd(config)# access-list acl_grp extended permit icmp any any
pix-jtpd(config)# access-list acl_grp extended permit tcp any any
pix-jtpd(config)# access-list acl_grp extended permit ip any any

Apply to the interface :

pix-jtpd(config)# access-group acl_grp in interface outside
pix-jtpd(config)# access-group acl_grp in interface inside

Have a good try :D

Dhcp Fixed Address

Some hosts will required fixed ip address, such as : web server, printer etc. Host which require fixed ip address need to be mapped with its mac-address. This is sample configuration of dhcp server :

root@fadly-desktop:~# vi /etc/dhcp3/dhcpd.conf

host fadly {
hardware ethernet 00:90:F5:5D:6D:BC;
fixed-address 192.168.78.206;
}

subnet 192.168.78.204 netmask 255.255.255.252 {
option broadcast-address 192.168.78.207;
option routers 192.168.78.205;
option subnet-mask 255.255.255.252;
}

option domain-name 202.155.0.10;

Cisco - Linux Dhcp-relay setting

This is the configuration of router as dhcp-relay and linux as dhcp server

Diagram :
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1. Interface configuration :

!
interface GigabitEthernet0/0.11
description ### Test Internet ###
encapsulation dot1Q 11
ip dhcp relay information trusted
ip dhcp relay information option vpn-id none
ip vrf forwarding vpn_internet
ip address 192.168.78.201 255.255.255.252
ip helper-address 192.168.78.198
end

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Config note :

ip dhcp relay information trusted

Usage Guidelines

By default, if the gateway address is set to all zeros in the DHCP packet and the relay information option is already present in the packet, the Cisco IOS DHCP relay agent will discard the packet. If the ip dhcp relay information trusted command is configured on an interface, the Cisco IOS DHCP relay agent will not discard the packet even if the gateway address is set to all zeros. Instead, the received DHCPDISCOVER or DHCPREQUEST messages will be forwarded to the addresses configured by the ip helper-address command as in normal DHCP relay operation.

ip dhcp relay information option vpn-id

To enable the system to insert VPN suboptions into the DHCP relay agent information option in forwarded BOOTREQUEST messages to a DHCP server and set the gateway address to the outgoing interface toward the DHCP server, use the ip dhcp relay information option vpn-id command in interface configuration mode. To remove the configuration, use the no form of this command.

refference : http://www.cisco.com/en/US/docs/ios/ipaddr/command/reference/iad_dhc2.html#wp1012293

2. Edit dhcp configuration :

root@desktop:# vi /etc/dhcp3/dhcpd.conf

ddns-update-style none;

default-lease-time 600;
max-lease-time 7200;

#authoritative;

log-facility local7;

option subnet-mask 255.255.255.252;
option broadcast-address 192.168.78.203;
option routers 192.168.78.201;

subnet 192.168.78.200 netmask 255.255.255.252 {
range 192.168.78.202;
}


3. Checking log :

Jul 15 18:17:22 -desktop dhcpd: DHCPDISCOVER from 00:0a:e4:36:03:a0 via 192.168.78.201
Jul 15 18:17:23 -desktop dhcpd: DHCPOFFER on 192.168.78.202 to 00:0a:e4:36:03:a0 (LENOVO-2EB43090) via 192.168.78.201
Jul 15 18:17:23 -desktop dhcpd: DHCPREQUEST for 192.168.78.202 (192.168.78.198) from 00:0a:e4:36:03:a0 (LENOVO-2EB43090) via 192.168.78.201
Jul 15 18:17:23 -desktop dhcpd: DHCPACK on 192.168.78.202 to 00:0a:e4:36:03:a0 (LENOVO-2EB43090) via 192.168.78.201
Jul 15 18:17:25 -desktop dhcpd: DHCPREQUEST for 192.168.78.202 from 00:0a:e4:36:03:a0 (LENOVO-2EB43090) via eth1
Jul 15 18:17:25 -desktop dhcpd: DHCPACK on 192.168.78.202 to 00:0a:e4:36:03:a0 (LENOVO-2EB43090) via eth1

Have a good try.. :)

Dynamips Dynagen Tutorial

(First ): Download dynagen at http://dynagen.org

Go to download menu, you will be redirected to http://sourceforge.net
Go to Dynagen source / Linux : click dynagen-0.11.0.tar.gz
Point your mouse to use direct link, right click then copy link location, http://downloads.sourceforge.net/sourceforge/dyna-gen/dynagen-0.11.0.tar.gz?use_mirror=nchc

Download from Linux terminal :
root@desktop:~# wget http://downloads.sourceforge.net/sourceforge/dyna-gen/dynagen-0.11.0.tar.gz?use_mirror=nchc


(Second) : Create directory & extract tarball

Create Directory : root@desktop:~# mkdir /home/dynamips
Move source file to dynamips folder : root@desktop:~# mv dynagen-0.11.0.tar.gz /home/dynamips
Extract tarball : root@desktop:~# tar zxvf dynagen-0.11.0.tar.gz
Go to folder : root@desktop:~# cd /home/dynamips/dynagen-0.11.0
Check README file :root@desktop:/home/dynamips/dynagen-0.11.0#more README.txt
----------------------------------------------------------------------------------------------------------------------------------------

This version of Dynagen requires at least version 0.2.8-RC1 of Dynamips

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(Third) : Download dynamips that is match to dynagen requirement

Go to http://www.ipflow.utc.fr/blog/
point your mouse to this link 0.2.8-RC2 binary for Linux x86 platforms, right click and copy link location
http://www.ipflow.utc.fr/dynamips/dynamips-0.2.8-RC2-x86.bin

Download from Linux terminal :
root@desktop:/home/dynamips/dynagen-0.11.0# wget http://www.ipflow.utc.fr/dynamips/dynamips-0.2.8-RC2-x86.bin

Change privilege :
root@desktop:/home/dynamips/dynagen-0.11.0# chmod 777 dynamips-0.2.8-RC2-x86.bin


(Fourth) : Create Symlink (Symbolic link)
Go to folder : cd /usr/bin
symlink using alias for dynamips program : /usr/bin# ln -s /home/dynamips/dynagen-0.11.0/dynamips-0.2.8-RC2-x86.bin dynamips
symlink using alias for dynagen program : /usr/bin# ln -s /home/dynamips/dynagen-0.11.0/dynagen dynagen


(Fifth) : Download, Extract & Copy IOS image
Download IOS (I will not tell you how to get the IOS)
extract the IOS to make router boot up faster than ziped IOS
Create directory to store IOS :
root@desktop:/home/dynamips/dynagen-0.11.0# mkdir Images
navigate to folder : cd Images
copy IOS file : cp /home/C7200-K9.BIN C7200-K9.BIN

(Sixth) : Running Sample Lab
Go to sample labs .net file : root@desktop: cd /home/dynamips/dynagen-0.11.0/sample_labs/simple1#
Edit simple1.net : vi sample1.net
----------------------------------------------------------------------------------------------------------------------------------------
[localhost]

[[7200]]
# image = \Program Files\Dynamips\images\c7200-jk9o3s-mz.124-7a.image
# On Linux / Unix use forward slashes:
image = /home/dynamips/dynagen-0.11.0/Images/C7200-K9.BIN
npe = npe-400
ram = 160

[[ROUTER R1]]
s1/0 = R2 s1/0

[[router R2]]
# No need to specify an adapter here, it is taken care of
# by the interface specification under Router R1


# R1 s1/0 ----- R2 s1/0

----------------------------------------------------------------------------------------------------------------------------------------

(Seventh) : Run dynamips instance 7200 in background (&)

root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# dynamips -H 7200 &
[1] 7267
root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# Cisco Router Simulation Platform (version 0.2.8-RC2-x86)
Copyright (c) 2005-2007 Christophe Fillot.
Build date: Oct 2 2008 01:17:18

ILT: loaded table "mips64j" from cache.
ILT: loaded table "mips64e" from cache.
ILT: loaded table "ppc32j" from cache.
ILT: loaded table "ppc32e" from cache.
Hypervisor TCP control server started (port 7200).


(Eighth) : Run Dynagen simple1.net
root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1#dynagen simple1.net

Dynagen management console for Dynamips and Pemuwrapper 0.11.0
Copyright (c) 2005-2007 Greg Anuzelli, contributions Pavel Skovajsa

=> list
Name Type State Server Console
R1 7200 running localhost:7200 2000
R2 7200 running localhost:7200 2001
=>

(Ninth) : Access / Telnet R1 & R2

----------------------------------------------------------------------------------------------------------------------------------------
root@desktop:~# telnet localhost 2000
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connected to Dynamips VM "R1" (ID 0, type c7200) - Console port

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R1
R1(config)#int serial 1/0
R1(config-if)#no shutdown

----------------------------------------------------------------------------------------------------------------------------------------

root@desktop:~# telnet localhost 2001
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connected to Dynamips VM "R2" (ID 1, type c7200) - Console port

Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#hostname R2
R2(config)#int serial 1/0
R2(config-if)#no shutdown

----------------------------------------------------------------------------------------------------------------------------------------

R1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
R2 Ser 1/0 15 R 7206VXR Ser 1/0

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R2#sh cdp nei
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone

Device ID Local Intrfce Holdtme Capability Platform Port ID
R1 Ser 1/0 158 R 7206VXR Ser 1/0

----------------------------------------------------------------------------------------------------------------------------------------
Set ip address :

R1(config)#int ser 1/0
R1(config-if)#ip add 10.1.0.1 255.255.255.0

R2(config)#int ser 1/0
R2(config-if)#ip add 10.1.0.2 255.255.255.0
R2(config-if)#

Ping : R1 to R2

R1#ping 10.1.0.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/15/16 ms

(Tenth) : Turn off the router, Stop dynagen and dynamips

Turn off the router :

=>
=> stop R1
C7200 'R1': stopping simulation.
100-VM 'R1' stopped
=> stop R2
100-VM 'R2' stopped
C7200 'R2': stopping simulation.
=>

Stop Dynagen simple1.net

Exit dynagen :
=> exit
Exiting...
Shutdown in progress...
Shutdown completed

Stop dynamips :

root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# ps -ax |grep dynamips
Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html
7267 pts/0 Sl 39:08 dynamips -H 7200
7699 pts/0 R+ 0:00 grep dynamips

root@desktop:/home/dynamips/dynagen-0.11.0/sample_labs/simple1# kill -9 7267


To optimize your pc, you have to set the idle-pc. idle-pc depend on IOS, to get the value use this step :

=> idlepc get R1
Please wait while gathering statistics...

Please wait while gathering statistics...
Done. Suggested idling PC:
0x608c5bc8 (count=48)
0x608c5bcc (count=35)
0x608463cc (count=59)
0x60847050 (count=71)
Restart the emulator with "--idle-pc=0x608c5bc8" (for example)
1: 0x608c5bc8 [48]
2: 0x608c5bcc [35]
* 3: 0x608463cc [59]
4: 0x60847050 [71]


Edit simple1.net : vi sample1.net


[localhost]

[[7200]]
# image = \Program Files\Dynamips\images\c7200-jk9o3s-mz.124-7a.image
# On Linux / Unix use forward slashes:
image = /home/dynamips/dynagen-0.11.0/Images/C7200-K9.BIN
npe = npe-400
ram = 160
idlepc = 0x608463cc

Save file

simple1#dynagen simple1.net

=> idlepc show R1
R1 has an idlepc value of: 0x608463cc
=> idlepc show R2
R2 has an idlepc value of: 0x608463cc
=>

Have a good try ;)

here is the usefull link to try dynamips and dynagen from iementor
http://www.iementor.com/Introduction_to_Dynamips.pdf

Nas port equal to Zero (Nas-port = 0)

Nas-Port is one of the radius attribute that can be used for identifying user both of in the Router or in the radius server.

I'm using IOS SB and 7200 VXR for the router, it can be configured to send Nas-Port attribute or not. If you don't want to send it, you just configure the router like this :

Diagram : PC ----L3 ISG ----- INTERNET

|---- PORTAL

|---- RADIUS

-----------------------------------------------------------------------------------------------------------------

Configuration :

ISG-L4R(config)#aaa group server radius AAA
ISG-L4R(config-sg-radius)#attribute nas-port ?
format Set the format of the NAS-Port attribute
none Don't send nas-port attribute
ISG-L4R(config-sg-radius)#attribute nas-port none

The debug result will be like this :

(1). User login from Website :

006675: Apr 13 14:52:44 WIB: RADIUS: COA received from id 105 20.0.92.156:32775, CoA Request, len 93
006676: Apr 13 14:52:44 WIB: RADIUS/DECODE: VSA external len != internal + VSA hdr

(2). Nas-port is being disable :

006677: Apr 13 14:52:44 WIB: RADIUS/ENCODE(00000D42):Orig. component type = IEDGE_IP_SIP
006678: Apr 13 14:52:44 WIB: RADIUS/ENCODE: NAS PORT sending disabled
006679: Apr 13 14:52:44 WIB: RADIUS(00000D42): Config NAS IP: 10.0.4.101
006680: Apr 13 14:52:44 WIB: RADIUS/ENCODE(00000D42): acct_session_id: 3447
006681: Apr 13 14:52:44 WIB: RADIUS(00000D42): Config NAS IP: 10.0.4.101

(3). Login Request to Radius :

006682: Apr 13 14:52:44 WIB: RADIUS(00000D42): sending
006683: Apr 13 14:52:44 WIB: RADIUS(00000D42): Send Access-Request to 10.0.100.29:1645 id 1645/150, len 109
006684: Apr 13 14:52:44 WIB: RADIUS: authenticator C0 6E 4D 8F 2E 5B 9B 17 - 89 90 06 DE 9F C4 CB B2
006685: Apr 13 14:52:44 WIB: RADIUS: Framed-IP-Address [8] 6 30.0.74.1
006686: Apr 13 14:52:44 WIB: RADIUS: User-Name [1] 11 "pedi128k"
006687: Apr 13 14:52:44 WIB: RADIUS: User-Password [2] 18 *
006688: Apr 13 14:52:44 WIB: RADIUS: NAS-Port-Type [61] 6 Virtual [5]
006689: Apr 13 14:52:44 WIB: RADIUS: NAS-Port-Id [87] 11 "0/0/3/806"
006690: Apr 13 14:52:44 WIB: RADIUS: Service-Type [6] 6 Login [1]
006691: Apr 13 14:52:44 WIB: RADIUS: NAS-IP-Address [4] 6 10.0.4.101
006692: Apr 13 14:52:44 WIB: RADIUS: Acct-Session-Id [44] 10 "00000D77"
006693: Apr 13 14:52:44 WIB: RADIUS: Nas-Identifier [32] 9 "ISG-L4R"
006694: Apr 13 14:52:44 WIB: RADIUS: Event-Timestamp [55] 6 1239609164

(4). Received response from Radius :

006695: Apr 13 14:52:45 WIB: RADIUS: Received from id 1645/150 10.0.100.29:1645, Access-Accept, len 94
006696: Apr 13 14:52:45 WIB: RADIUS: authenticator 28 0C 18 47 8A E5 4E 9C - 45 7F B6 21 70 E0 A3 F0
006697: Apr 13 14:52:45 WIB: RADIUS: Class [25] 50
006698: Apr 13 14:52:45 WIB: RADIUS: 53 42 52 2D 43 4C 20 44 4E 3D 22 63 61 62 6C 65 [SBR-CL DN="pedi]
006699: Apr 13 14:52:45 WIB: RADIUS: 31 32 38 6B 22 20 41 54 3D 22 32 30 30 22 20 55 [128k" AT="200" U]
006700: Apr 13 14:52:45 WIB: RADIUS: 53 3D 22 22 20 53 49 3D 22 32 31 35 32 32 22 00 [ S="" SI="21522"]
006701: Apr 13 14:52:45 WIB: RADIUS: Vendor, Unknown [26] 12
006702: Apr 13 14:52:45 WIB: RADIUS: Unsupported [2] 6
006703: Apr 13 14:52:45 WIB: RADIUS: 00 00 00 01
006704: Apr 13 14:52:45 WIB: RADIUS: Session-Timeout [27] 6 86400
006705: Apr 13 14:52:45 WIB: RADIUS: Idle-Timeout [28] 6 300
006706: Apr 13 14:52:45 WIB: RADIUS(00000D42): Received from id 1645/150
006707: Apr 13 14:52:45 WIB: RADIUS/ENCODE(00000D42):Orig. component type = IEDGE_IP_SIP
006708: Apr 13 14:52:45 WIB: RADIUS: AAA Unsupported Attr: timeout [371] 4 86400
006709: Apr 13 14:52:45 WIB: RADIUS: AAA Unsupported Attr: idletime [123] 4 300

(6). Ack response to Portal :

006710: Apr 13 14:52:45 WIB: RADIUS(00000D42): sending
006711: Apr 13 14:52:45 WIB: RADIUS(00000D42): Send CoA Ack Response to 20.0.92.156:32775 id 105, len 70
006712: Apr 13 14:52:45 WIB: RADIUS: authenticator 55 36 45 5F 9E 23 1E 37 - 0E 07 E7 29 2B FD 0B 16
006713: Apr 13 14:52:45 WIB: RADIUS: Vendor, Cisco [26] 18
006714: Apr 13 14:52:45 WIB: RADIUS: ssg-command-code [252] 12
006715: Apr 13 14:52:45 WIB: RADIUS: 01 63 61 62 6C 65 31 32 38 6B [Account-Log-On pedi128k]
006716: Apr 13 14:52:45 WIB: RADIUS: Vendor, Cisco [26] 20
006717: Apr 13 14:52:45 WIB: RADIUS: ssg-account-info [250] 14 "S30.0.74.1"
006718: Apr 13 14:52:45 WIB: RADIUS: Session-Timeout [27] 6 86400
006719: Apr 13 14:52:45 WIB: RADIUS: Idle-Timeout [28] 6 300
006720: Apr 13 14:52:45 WIB: RADIUS/ENCODE(00000D42):Orig. component type = IEDGE_IP_SIP
006721: Apr 13 14:52:45 WIB: RADIUS/ENCODE: NAS PORT sending disabled
006722: Apr 13 14:52:45 WIB: RADIUS(00000D42): Config NAS IP: 10.0.4.101
006723: Apr 13 14:52:45 WIB: RADIUS(00000D42): Config NAS IP: 10.0.4.101

(7). Sending Accounting Request :

006724: Apr 13 14:52:45 WIB: RADIUS(00000D42): sending
006725: Apr 13 14:52:45 WIB: RADIUS(00000D42): Send Accounting-Request to 10.0.100.29:1646 id 1646/64, len 206
006726: Apr 13 14:52:45 WIB: RADIUS: authenticator D4 A8 64 DC B7 6B 89 1B - C9 D8 3B AF 45 53 03 0D
006727: Apr 13 14:52:45 WIB: RADIUS: Acct-Session-Id [44] 10 "00000D79"
006728: Apr 13 14:52:45 WIB: RADIUS: Framed-Protocol [7] 6 PPP [1]
006729: Apr 13 14:52:45 WIB: RADIUS: Vendor, Cisco [26] 13
006730: Apr 13 14:52:45 WIB: RADIUS: ssg-service-info [251] 7 "NINET"
006731: Apr 13 14:52:45 WIB: RADIUS: Vendor, Cisco [26] 34
006732: Apr 13 14:52:45 WIB: RADIUS: Cisco AVpair [1] 28 "parent-session-id=00000D77"
006733: Apr 13 14:52:45 WIB: RADIUS: User-Name [1] 11 "pedi128k"
006734: Apr 13 14:52:45 WIB: RADIUS: Acct-Status-Type [40] 6 Start [1]
006735: Apr 13 14:52:45 WIB: RADIUS: Framed-IP-Address [8] 6 30.0.74.1
006736: Apr 13 14:52:45 WIB: RADIUS: NAS-Port-Type [61] 6 Virtual [5]
006737: Apr 13 14:52:45 WIB: RADIUS: NAS-Port-Id [87] 11 "0/0/3/806"
006738: Apr 13 14:52:45 WIB: RADIUS: Class [25] 50
006739: Apr 13 14:52:45 WIB: RADIUS: 53 42 52 2D 43 4C 20 44 4E 3D 22 63 61 62 6C 65 [SBR-CL DN="pedi]
006740: Apr 13 14:52:45 WIB: RADIUS: 31 32 38 6B 22 20 41 54 3D 22 32 30 30 22 20 55 [128k" AT="200" U]
006741: Apr 13 14:52:45 WIB: RADIUS: 53 3D 22 22 20 53 49 3D 22 32 31 35 32 32 22 00 [ S="" SI="21522"]
006742: Apr 13 14:52:45 WIB: RADIUS: Service-Type [6] 6 Framed [2]
006743: Apr 13 14:52:45 WIB: RADIUS: NAS-IP-Address [4] 6 10.0.4.101
006744: Apr 13 14:52:45 WIB: RADIUS: Event-Timestamp [55] 6 1239609165
006745: Apr 13 14:52:45 WIB: RADIUS: Nas-Identifier [32] 9 "ISG-L4R"
006746: Apr 13 14:52:45 WIB: RADIUS: Acct-Delay-Time [41] 6 0

(8). Received accounting response from Radius :

006747: Apr 13 14:52:45 WIB: RADIUS: Received from id 1646/64 10.0.100.29:1646, Accounting-response, len 20

In the above debug output you can see that there are no Nas-Port send in the user authentication and accounting. It because Nas-Port sending is being disabled.

-----------------------------------------------------------------------------------------------------------------
In this topology I use ip routed session scenario, in this scenario we can see Router (ISG) is sending the Nas-Port value equal to zero.

Here is the sample debug of nas port equal to zero :

(1). Sending Authentication request to Radius :

001672: Apr 13 12:33:27 WIB: RADIUS(00000A4B): Send Access-Request to 10.0.100.29:1645 id 1645/60, len 116
001673: Apr 13 12:33:27 WIB: RADIUS: authenticator 0A 4D 6D A0 9A 89 A0 E8 - 2D 70 65 89 25 90 2F 3A
001674: Apr 13 12:33:27 WIB: RADIUS: Framed-IP-Address [8] 6 30.0.74.1
001675: Apr 13 12:33:27 WIB: RADIUS: User-Name [1] 12 "pedi1024k"
001676: Apr 13 12:33:27 WIB: RADIUS: User-Password [2] 18 *
001677: Apr 13 12:33:27 WIB: RADIUS: NAS-Port-Type [61] 6 Virtual [5]
001678: Apr 13 12:33:27 WIB: RADIUS: NAS-Port [5] 6 0
001679: Apr 13 12:33:27 WIB: RADIUS: NAS-Port-Id [87] 11 "0/0/3/806"
001680: Apr 13 12:33:27 WIB: RADIUS: Service-Type [6] 6 Login [1]
001681: Apr 13 12:33:27 WIB: RADIUS: NAS-IP-Address [4] 6 10.0.4.101
001682: Apr 13 12:33:27 WIB: RADIUS: Acct-Session-Id [44] 10 "00000A4B"
001683: Apr 13 12:33:27 WIB: RADIUS: Nas-Identifier [32] 9 "ISG-L4R"
001684: Apr 13 12:33:27 WIB: RADIUS: Event-Timestamp [55] 6 1239600807

(2). Received Authentication Response from Radius :

001685: Apr 13 12:33:27 WIB: RADIUS: Received from id 1645/60 10.0.100.29:1645, Access-Accept, len 95
001686: Apr 13 12:33:27 WIB: RADIUS: authenticator 95 38 A5 67 3E 35 7A B2 - 50 AE 7B F8 2B 0B B3 64
001687: Apr 13 12:33:27 WIB: RADIUS: Class [25] 51
001688: Apr 13 12:33:27 WIB: RADIUS: 53 42 52 2D 43 4C 20 44 4E 3D 22 63 61 62 6C 65 [SBR-CL DN="pedi]
001689: Apr 13 12:33:27 WIB: RADIUS: 31 30 32 34 6B 22 20 41 54 3D 22 32 30 30 22 20 [1024k" AT="200" ]
001690: Apr 13 12:33:27 WIB: RADIUS: 55 53 3D 22 22 20 53 49 3D 22 32 31 34 38 32 22 [US="" SI="21482"]
001691: Apr 13 12:33:27 WIB: RADIUS: 00
001692: Apr 13 12:33:27 WIB: RADIUS: Vendor, Unknown [26] 12
001693: Apr 13 12:33:27 WIB: RADIUS: Unsupported [2] 6
001694: Apr 13 12:33:27 WIB: RADIUS: 00 00 00 01
001695: Apr 13 12:33:27 WIB: RADIUS: Session-Timeout [27] 6 86400
001696: Apr 13 12:33:27 WIB: RADIUS: Idle-Timeout [28] 6 300
001697: Apr 13 12:33:27 WIB: RADIUS(00000A4B): Received from id 1645/60
001698: Apr 13 12:33:27 WIB: RADIUS/ENCODE(00000A4B):Orig. component type = IEDGE_IP_SIP
001699: Apr 13 12:33:27 WIB: RADIUS: AAA Unsupported Attr: timeout [371] 4 86400
001700: Apr 13 12:33:27 WIB: RADIUS: AAA Unsupported Attr: idletime [123] 4 300

(3) Sending Ack response to portal :

001701: Apr 13 12:33:27 WIB: RADIUS(00000A4B): sending
001702: Apr 13 12:33:27 WIB: RADIUS(00000A4B): Send CoA Ack Response to 20.0.92.156:32775 id 44, len 71
001703: Apr 13 12:33:27 WIB: RADIUS: authenticator 67 B9 4E 33 4C D6 D9 B3 - 7B D4 95 75 6B AF F0 95
001704: Apr 13 12:33:27 WIB: RADIUS: Vendor, Cisco [26] 19
001705: Apr 13 12:33:27 WIB: RADIUS: ssg-command-code [252] 13
001706: Apr 13 12:33:27 WIB: RADIUS: 01 63 61 62 6C 65 31 30 32 34 6B [Account-Log-On cable1024k]
001707: Apr 13 12:33:27 WIB: RADIUS: Vendor, Cisco [26] 20
001708: Apr 13 12:33:27 WIB: RADIUS: ssg-account-info [250] 14 "S30.0.74.1"
001709: Apr 13 12:33:27 WIB: RADIUS: Session-Timeout [27] 6 86400
001710: Apr 13 12:33:27 WIB: RADIUS: Idle-Timeout [28] 6 300
001711: Apr 13 12:33:27 WIB: RADIUS/ENCODE(00000A4B):Orig. component type = IEDGE_IP_SIP
001712: Apr 13 12:33:27 WIB: RADIUS(00000A4B): Config NAS IP: 10.0.4.101
001713: Apr 13 12:33:27 WIB: RADIUS(00000A4B): Config NAS IP: 10.0.4.101

(4). Sending Accounting request to Radius :

001714: Apr 13 12:33:27 WIB: RADIUS(00000A4B): sending
001715: Apr 13 12:33:27 WIB: RADIUS(00000A4B): Send Accounting-Request to 10.0.100.29:1646 id 1646/11, len 214
001716: Apr 13 12:33:27 WIB: RADIUS: authenticator 2C 90 A8 7A 46 99 3C 70 - BE 6D F7 25 21 19 4F C9
001717: Apr 13 12:33:27 WIB: RADIUS: Acct-Session-Id [44] 10 "00000A4F"
001718: Apr 13 12:33:27 WIB: RADIUS: Framed-Protocol [7] 6 PPP [1]
001719: Apr 13 12:33:27 WIB: RADIUS: Vendor, Cisco [26] 13
001720: Apr 13 12:33:27 WIB: RADIUS: ssg-service-info [251] 7 "NINET"
001721: Apr 13 12:33:27 WIB: RADIUS: Vendor, Cisco [26] 34
001722: Apr 13 12:33:27 WIB: RADIUS: Cisco AVpair [1] 28 "parent-session-id=00000A4B"
001723: Apr 13 12:33:27 WIB: RADIUS: User-Name [1] 12 "pedi1024k"
001724: Apr 13 12:33:27 WIB: RADIUS: Acct-Status-Type [40] 6 Start [1]
001725: Apr 13 12:33:27 WIB: RADIUS: Framed-IP-Address [8] 6 30.0.74.1
001726: Apr 13 12:33:27 WIB: RADIUS: NAS-Port-Type [61] 6 Virtual [5]
001727: Apr 13 12:33:27 WIB: RADIUS: NAS-Port [5] 6 0
001728: Apr 13 12:33:27 WIB: RADIUS: NAS-Port-Id [87] 11 "0/0/3/806"
001729: Apr 13 12:33:27 WIB: RADIUS: Class [25] 51
001730: Apr 13 12:33:27 WIB: RADIUS: 53 42 52 2D 43 4C 20 44 4E 3D 22 63 61 62 6C 65 [SBR-CL DN="pedi]
001731: Apr 13 12:33:27 WIB: RADIUS: 31 30 32 34 6B 22 20 41 54 3D 22 32 30 30 22 20 [1024k" AT="200" ]
001732: Apr 13 12:33:27 WIB: RADIUS: 55 53 3D 22 22 20 53 49 3D 22 32 31 34 38 32 22 [US="" SI="21482"]
001733: Apr 13 12:33:27 WIB: RADIUS: 00
001734: Apr 13 12:33:27 WIB: RADIUS: Service-Type [6] 6 Framed [2]
001735: Apr 13 12:33:27 WIB: RADIUS: NAS-IP-Address [4] 6 10.0.4.101
001736: Apr 13 12:33:27 WIB: RADIUS: Event-Timestamp [55] 6 1239600807
001737: Apr 13 12:33:27 WIB: RADIUS: Nas-Identifier [32] 9 "ISG-L4R"
001738: Apr 13 12:33:27 WIB: RADIUS: Acct-Delay-Time [41] 6 0

(4). Received Accounting Response from Radius :

001739: Apr 13 12:33:28 WIB: RADIUS: Received from id 1646/11 10.0.100.29:1646, Accounting-response, len 20

-----------------------------------------------------------------------------------------------------------------

And if you want to make nas-port not equal to zero, you can use extended Nas-port support.

Configuration :

aaa group server radius AAA
server 10.0.100.29 auth-port 1645 acct-port 1646
ip radius source-interface GigabitEthernet0/3.806
attribute nas-port format e UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
deadtime 10

and the result will be like this :

(1). User login at portal :

007259: Apr 13 15:07:39 WIB: RADIUS: COA received from id 122 20.0.92.156:32775, CoA Request, len 95
007260: Apr 13 15:07:39 WIB: RADIUS/DECODE: VSA external len != internal + VSA hdr
007261: Apr 13 15:07:39 WIB: RADIUS/ENCODE(00000D81):Orig. component type = IEDGE_IP_SIP
007262: Apr 13 15:07:39 WIB: RADIUS: Format E value 0xDBD for character U with bitmask 0xFFFFFFFF
007263: Apr 13 15:07:39 WIB: RADIUS: Format E port 0xDBD with bit 32 processed
007264: Apr 13 15:07:39 WIB: RADIUS(00000D81): Config NAS IP: 10.0.4.101
007265: Apr 13 15:07:39 WIB: RADIUS/ENCODE(00000D81): acct_session_id: 3517
007266: Apr 13 15:07:39 WIB: RADIUS(00000D81): Config NAS IP: 10.0.4.101
007267: Apr 13 15:07:39 WIB: RADIUS(00000D81): sending

(2). Sending Authentication Request to Radius :

007268: Apr 13 15:07:39 WIB: RADIUS(00000D81): Send Access-Request to 10.0.100.29:1645 id 1645/158, len 116
007269: Apr 13 15:07:39 WIB: RADIUS: authenticator 89 50 7C 69 43 3C D1 EE - 65 30 C4 22 B1 6A 38 65
007270: Apr 13 15:07:39 WIB: RADIUS: Framed-IP-Address [8] 6 30.0.74.3
007271: Apr 13 15:07:39 WIB: RADIUS: User-Name [1] 12 "pedi1024k"
007272: Apr 13 15:07:39 WIB: RADIUS: User-Password [2] 18 *
007273: Apr 13 15:07:39 WIB: RADIUS: NAS-Port-Type [61] 6 Ethernet [15]
007274: Apr 13 15:07:39 WIB: RADIUS: NAS-Port [5] 6 3517
007275: Apr 13 15:07:39 WIB: RADIUS: NAS-Port-Id [87] 11 "0/0/3/806"
007276: Apr 13 15:07:39 WIB: RADIUS: Service-Type [6] 6 Login [1]
007277: Apr 13 15:07:39 WIB: RADIUS: NAS-IP-Address [4] 6 10.0.4.101
007278: Apr 13 15:07:39 WIB: RADIUS: Acct-Session-Id [44] 10 "00000DBD"
007279: Apr 13 15:07:39 WIB: RADIUS: Nas-Identifier [32] 9 "ISG-L4R"
007280: Apr 13 15:07:39 WIB: RADIUS: Event-Timestamp [55] 6 1239610059

(3). Received Response from Radius :

007281: Apr 13 15:07:39 WIB: RADIUS: Received from id 1645/158 10.0.100.29:1645, Access-Accept, len 95
007282: Apr 13 15:07:39 WIB: RADIUS: authenticator E3 22 CC 82 6E 49 F3 20 - 9C 20 5E CE 7D B9 EF 45
007283: Apr 13 15:07:39 WIB: RADIUS: Class [25] 51
007284: Apr 13 15:07:39 WIB: RADIUS: 53 42 52 2D 43 4C 20 44 4E 3D 22 63 61 62 6C 65 [SBR-CL DN="pedi]
007285: Apr 13 15:07:39 WIB: RADIUS: 31 30 32 34 6B 22 20 41 54 3D 22 32 30 30 22 20 [1024k" AT="200" ]
007286: Apr 13 15:07:39 WIB: RADIUS: 55 53 3D 22 22 20 53 49 3D 22 32 31 35 32 35 22 [US="" SI="21525"]
007287: Apr 13 15:07:39 WIB: RADIUS: 00
007288: Apr 13 15:07:39 WIB: RADIUS: Vendor, Unknown [26] 12
007289: Apr 13 15:07:39 WIB: RADIUS: Unsupported [2] 6
007290: Apr 13 15:07:39 WIB: RADIUS: 00 00 00 01
007291: Apr 13 15:07:39 WIB: RADIUS: Session-Timeout [27] 6 86400
007292: Apr 13 15:07:39 WIB: RADIUS: Idle-Timeout [28] 6 300
007293: Apr 13 15:07:39 WIB: RADIUS(00000D81): Received from id 1645/158
007294: Apr 13 15:07:39 WIB: RADIUS/ENCODE(00000D81):Orig. component type = IEDGE_IP_SIP
007295: Apr 13 15:07:39 WIB: RADIUS: AAA Unsupported Attr: timeout [371] 4 86400
007296: Apr 13 15:07:39 WIB: RADIUS: AAA Unsupported Attr: idletime [123] 4 300

(4). Sending Ack response to portal :

007297: Apr 13 15:07:39 WIB: RADIUS(00000D81): sending
007298: Apr 13 15:07:39 WIB: RADIUS(00000D81): Send CoA Ack Response to 20.0.92.156:32775 id 122, len 71
007299: Apr 13 15:07:39 WIB: RADIUS: authenticator D0 0B D7 83 04 4F 32 6A - 87 17 3C 62 0D 1E 25 64
007300: Apr 13 15:07:39 WIB: RADIUS: Vendor, Cisco [26] 19
007301: Apr 13 15:07:39 WIB: RADIUS: ssg-command-code [252] 13
007302: Apr 13 15:07:39 WIB: RADIUS: 01 63 61 62 6C 65 31 30 32 34 6B [Account-Log-On pedi1024k]
007303: Apr 13 15:07:39 WIB: RADIUS: Vendor, Cisco [26] 20
007304: Apr 13 15:07:39 WIB: RADIUS: ssg-account-info [250] 14 "S30.0.74.3"
007305: Apr 13 15:07:39 WIB: RADIUS: Session-Timeout [27] 6 86400
007306: Apr 13 15:07:39 WIB: RADIUS: Idle-Timeout [28] 6 300
007307: Apr 13 15:07:39 WIB: RADIUS/ENCODE(00000D81):Orig. component type = IEDGE_IP_SIP
007308: Apr 13 15:07:39 WIB: RADIUS: Format E value 0xDBD for character U with bitmask 0xFFFFFFFF
007309: Apr 13 15:07:39 WIB: RADIUS: Format E port 0xDBD with bit 32 processed
007310: Apr 13 15:07:39 WIB: RADIUS(00000D81): Config NAS IP: 10.0.4.101
007311: Apr 13 15:07:39 WIB: RADIUS(00000D81): Config NAS IP: 10.0.4.101
007312: Apr 13 15:07:39 WIB: RADIUS(00000D81): sending

(5). Sending Accounting Request to Radius :

007313: Apr 13 15:07:39 WIB: RADIUS(00000D81): Send Accounting-Request to 10.0.100.29:1646 id 1646/72, len 214
007314: Apr 13 15:07:39 WIB: RADIUS: authenticator 0B 51 C5 1E 61 E2 2F 15 - E2 8A 31 51 10 86 5E 63
007315: Apr 13 15:07:39 WIB: RADIUS: Acct-Session-Id [44] 10 "00000DBF"
007316: Apr 13 15:07:39 WIB: RADIUS: Framed-Protocol [7] 6 PPP [1]
007317: Apr 13 15:07:39 WIB: RADIUS: Vendor, Cisco [26] 13
007318: Apr 13 15:07:39 WIB: RADIUS: ssg-service-info [251] 7 "NINET"
007319: Apr 13 15:07:39 WIB: RADIUS: Vendor, Cisco [26] 34
007320: Apr 13 15:07:39 WIB: RADIUS: Cisco AVpair [1] 28 "parent-session-id=00000DBD"
007321: Apr 13 15:07:39 WIB: RADIUS: User-Name [1] 12 "pedi1024k"
007322: Apr 13 15:07:39 WIB: RADIUS: Acct-Status-Type [40] 6 Start [1]
007323: Apr 13 15:07:39 WIB: RADIUS: Framed-IP-Address [8] 6 30.0.74.3
007324: Apr 13 15:07:39 WIB: RADIUS: NAS-Port-Type [61] 6 Ethernet [15]
007325: Apr 13 15:07:39 WIB: RADIUS: NAS-Port [5] 6 3517
007326: Apr 13 15:07:39 WIB: RADIUS: NAS-Port-Id [87] 11 "0/0/3/806"
007327: Apr 13 15:07:39 WIB: RADIUS: Class [25] 51
007328: Apr 13 15:07:39 WIB: RADIUS: 53 42 52 2D 43 4C 20 44 4E 3D 22 63 61 62 6C 65 [SBR-CL DN="pedi]
007329: Apr 13 15:07:39 WIB: RADIUS: 31 30 32 34 6B 22 20 41 54 3D 22 32 30 30 22 20 [1024k" AT="200" ]
007330: Apr 13 15:07:39 WIB: RADIUS: 55 53 3D 22 22 20 53 49 3D 22 32 31 35 32 35 22 [US="" SI="21525"]
007331: Apr 13 15:07:39 WIB: RADIUS: 00
007332: Apr 13 15:07:39 WIB: RADIUS: Service-Type [6] 6 Framed [2]
007333: Apr 13 15:07:39 WIB: RADIUS: NAS-IP-Address [4] 6 10.0.4.101
007334: Apr 13 15:07:39 WIB: RADIUS: Event-Timestamp [55] 6 1239610059
007335: Apr 13 15:07:39 WIB: RADIUS: Nas-Identifier [32] 9 "ISG-L4R"
007336: Apr 13 15:07:39 WIB: RADIUS: Acct-Delay-Time [41] 6 0

(6). Received Accounting Response from Radius :

007337: Apr 13 15:07:39 WIB: RADIUS: Received from id 1646/72 10.0.100.29:1646, Accounting-response, len 20



In the above configuration is using format 'e' Nas-Port, format e is customized instead of format a to c, it is developed because not all off format are supported in the new cisco platform.

What i'm using in the configruration for the format nas-port is session id "U"

Radius-server attribute nas-port format

Session ID

U

The value of session-id (hexadecimal) is converted to nas-port value (decimal)

Here is the result :
007320: Apr 13 15:07:39 WIB: RADIUS: Cisco AVpair [1] 28 "parent-session-id=00000DBD"

Ox 00000DBD = 3517


You can find the detail from this cisco site

http://www.cisco.com/en/US/docs/ios/12_2sb/feature/guide/rd_naspt.html

Passed Routing & Swiching CCIE

Finnaly I passed my CCIE Routing & Switching exam at Sydney 26 November 2008. Thanks to my wife, friends, My Boss who support me to take this exam. It was very long journey, spent much time to exercise. At the end i'm very happy to be a CCIE. Next I will take another track or another exam. :)