[j-nsp] Question on ERX PPPoE Config

Sat Sep 13 09:33:00 EDT 2008

Hi All,

We are in the process of setting up an ERX as a PPPoE server using a Gigabit
Ethernet port. 

I followed a section titled "Configuring Dynamic PPPoE over Static PPPoE
with Ethernet Interface Columns" in the config guide:

Link Layer Configuration Guide Ver 6.1

Using a WINDOWS PPPoE Client:

My configuration (pasted below) allows a Windows XP PC (connnected to the 
same ethernet network as Gigabit 8/0) to dial, get authenticated and receive

an IP and DNS address (confirmed by a network sniffer running on the PC and 
syslog messages from the ERX) but the dial process "hangs" on the 
"Registering your computer on the network" screen on the PC. 

If I wait long enough, I will get the "Error 734: The PPP Link Control
Protocol was terminated".

The corresponding Syslog messages for the session:

<191> 09/12/2008 23:48:00 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 0.21, tx ipNcp confNak, id = 6, length = 22, ipAddress = 172.18.4.109,

primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:48:00 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 0.22, rx ipNcp confReq, id = 7, length = 22, ipAddress = 172.18.4.109,

primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:48:00 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 0.22, tx ipNcp confAck, id = 7, length = 22, ipAddress = 172.18.4.109,

primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:48:29 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 30.09, tx lcp echoReq, id = 169, length = 8, magic = 0x480538f6

<191> 09/12/2008 23:48:29 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 30.10, rx lcp echoResp, id = 169, length = 8, magic = 0x607824d9

<191> 09/12/2008 23:49:28 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 90.29, tx lcp echoReq, id = 170, length = 8, magic = 0x480538f6

<191> 09/12/2008 23:49:30 [ppp] pppPacket (interface GigabitEthernet8/0.34):

time: 90.30, rx lcp echoResp, id = 170, length = 8, magic = 0x607824d9

<190> 09/12/2008 23:49:58 [icc] ppp (): Action indication on slot 8

<191> 09/12/2008 23:49:58 [ppp] ppp (interface ): Authenticate terminate - 
sessionId = 2097203

<189> 09/12/2008 23:49:58 [pppoe] pppoe (): Link  for PppoeSub 0x12002755, 
adminStatus=adminStatusUp, operStatus=operStatusDown, reason= PPP Indication

<189> 09/12/2008 23:50:24 [pppoe] pppoe (): Link  for PppoeSub 0x12002756, 
adminStatus=adminStatusUp, operStatus=operStatusUp, reason= None

<190> 09/12/2008 23:50:25 [icc] ppp (): Action indication on slot 8

Using a LINKSYS PPPoE Client:

If I use a Linksys router, I get an error message saying "Cannot get an IP 
address from PPPoE server".

with the following Syslog messages on the ERX:

<191> 09/12/2008 23:57:29 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 17.46, tx ipNcp confAck, id = 64, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:29 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 18.50, rx ipNcp confReq, id = 65, length = 22, ipAddress = 0.0.0.0, 
primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:29 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 18.50, tx ipNcp confNak, id = 65, length = 10, ipAddress = 
172.18.4.103

<191> 09/12/2008 23:57:29 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 18.50, rx ipNcp confReq, id = 66, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:29 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 18.50, tx ipNcp confAck, id = 66, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 19.54, rx ipNcp confReq, id = 67, length = 22, ipAddress = 0.0.0.0, 
primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 19.54, tx ipNcp confNak, id = 67, length = 10, ipAddress = 
172.18.4.103

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 19.55, rx ipNcp confReq, id = 68, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 19.55, tx ipNcp confAck, id = 68, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 20.59, rx ipNcp confReq, id = 69, length = 22, ipAddress = 0.0.0.0, 
primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 20.59, tx ipNcp confNak, id = 69, length = 10, ipAddress = 
172.18.4.103

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 20.59, rx ipNcp confReq, id = 70, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<191> 09/12/2008 23:57:31 [ppp] pppPacket (interface GigabitEthernet8/0.38):

time: 20.59, tx ipNcp confAck, id = 70, length = 22, ipAddress = 
172.18.4.103, primaryDns = 1.1.1.24, secondaryDns = 1.1.1.25

<190> 09/12/2008 23:57:31 [icc] ppp (): Action indication on slot 8

<191> 09/12/2008 23:57:31 [ppp] ppp (interface ): Authenticate terminate - 
sessionId = 2097207

<189> 09/12/2008 23:57:31 [pppoe] pppoe (): Link  for PppoeSub 0x12002759, 
adminStatus=adminStatusUp, operStatus=operStatusDown, reason= PPP Indication

I would really appreciate if some kind soul could advise me on what I'm
doing wrong with the config to cause this behavior.

ERX Configuration:

boot config running-configuration
boot system erx_5-1-3p0-1.rel
no boot backup
no boot subsystem
no boot backup subsystem
no boot force-backup
!
license b-ras ********

aaa domain-map "mydomain.net"
 router-name default
 address-pool-name pool1
 ipv6-router-name default
!
aaa parse-order domain-first
aaa profile "mydomain.net"
 deny default
 allow "mydomain.net"
!
traffic-class "best-effort"
!
drop-profile default
!
queue-profile default
!
scheduler-profile default
!
statistics-profile default
!
qos-profile "atm-default"
!
qos-profile "serial-default"
!
qos-profile "ethernet-default"
!
qos-profile "server-default"
!
!
qos-port-type-profile ethernet qos-profile "ethernet-default"
!
qos-port-type-profile atm qos-profile "atm-default"
!
qos-port-type-profile serial qos-profile "serial-default"
!
qos-port-type-profile server-port qos-profile "server-default"
!
profile test1
 ppp authentication virtual-router default chap
 ppp mru 1400
 ppp log pppPacket
 ppp log pppStateMachine
 ppp aaa-profile "mydomain.net"
 pppoe sessions 100
 pppoe duplicate-protection
 pppoe always-offer
 pppoe acName test1
!
virtual-router default
aaa dns primary 1.1.1.24
aaa dns secondary 1.1.1.25
aaa authentication ppp default radius
aaa accounting ppp default radius
!
ip address-pool local
interface null 0
!
interface gigabitEthernet 8/0
 ip address 172.18.4.1 255.255.255.0
 pppoe
 pppoe auto-configure
 pppoe profile any test1
!
!
ip local pool pool1
ip local pool pool1 172.18.4.101 172.18.4.110
!
radius authentication server 3.3.3.3
 udp-port 1645
 retransmit 2
 timeout 5
 deadtime 10
 key secret
!
radius rollover-on-reject enable

Thank you for your consideration in looking at his for me.

Best Regards to all

Rocco DiSanto
DIrectUS.net