RE: PPPOE and DHCP POOL issue

From: Antonio Soares (amsoares@netcabo.pt)
Date: Mon Mar 30 2009 - 20:59:22 ART


What IOS releases are you using ?

It worked for me when using 12.3(8)T11 on both the client and server. It was not necessary to specify the vrf under the dhcp pool.

But it didn't work when the client and server are running 12.2(8)T (with or without vrf under the dhcp pool).

For some reason, the client refuses the assigned address:

+++++++++++++++++++
01:06:51: DHCPD: assigned IP address 12.12.12.1 to client 0063.6973.636f.2d63.6330.302e.3061.3938.2e30.3030.302d.4469.31.
01:06:51: DHCPD: Sending DHCPOFFER to client 0063.6973.636f.2d63.6330.302e.3061.3938.2e30.3030.302d.4469.31 (12.12.12.1).
01:06:51: DHCPD: child pool: 12.12.12.0 / 255.255.255.0 (PPPoE)
01:06:51: DHCPD: pool PPPoE has no parent.
01:06:51: DHCPD: child pool: 12.12.12.0 / 255.255.255.0 (PPPoE)
01:06:51: DHCPD: pool PPPoE has no parent.
01:06:51: DHCPD: broadcasting BOOTREPLY to client cc00.0a98.0000.
01:06:51: DHCPD: DHCPREQUEST received from client 0063.6973.636f.2d63.6330.302e.3061.3938.2e30.3030.302d.4469.31.
01:06:51: DHCPD: client rejected 12.12.12.1, sent 12.12.12.1.
01:06:51: DHCPD: returned 12.12.12.1 to address pool PPPoE.
+++++++++++++++++++

I don't see the feature "VRF Aware DHCP Server" documented anywhere. Do you have any documentation about this ?

Regards,

Antonio Soares, CCIE #18473 (R&S)
amsoares@netcabo.pt

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Andres Alejandro
Sent: segunda-feira, 30 de Margo de 2009 23:05
To: ccielab@groupstudy.com
Subject: PPPOE and DHCP POOL issue

Hi group,

I have configured pppoe between r1 and r2 and have configured dhcp poll with exclude so that r1 single receives the 10.1.1.1
address. The mentioned configuration works fine, but when I apply the command 'ipvrf forwarding XX'
under the virtual-template the int dialer does not receive the Ip address.
Then I add within pool the command vrf XX. After making this the interface dialer receives IP but not exclude the mentioned
directions in the ip dhcp excluded-address.

R1 config:

interface fastethernet 0/1
no ip address
pppoe enable
pppoe-client dial-pool-number 1
!
interface dialer 1
ip address dhcp
encapsulation ppp
no peer neighbor-route
ppp chap hostname cisco
ppp chap password 0 cisco
dialer pool 1

r2 config:

username cisco password 0 cisco
aaa authentication ppp PPP local
!
vpdn enable
!
vpdn-group 1
accept-dialin
protocol pppoe
virtual-template 1
!
interface fastethernet 0/1
no ip address
pppoe enable
!
interface virtual-template 1
ip address 10.1.1.8 255.255.255.0
no peer neighbor-route
ppp authentication chap PPP
!
ip dhcp pool test
network 10.1.1.0 255.255.255.0
vrf XX
!
ip dhcp excluded-address 10.1.1.2 10.1.1.254

Please, let me know the opinion about the issue.
Thanks.



This archive was generated by hypermail 2.1.4 : Mon Apr 06 2009 - 06:44:08 ART