[cisco-bba] Problems with ppp and ipv6 unicast-routing 7206VXR

[Saso Pirnat]

Hi,

I'm experiencing problems, when I want to turn dual stack IPv6 and IPv4
routing on 7206VXR that is configured as BRAS. When I put command "ipv6
unicast-routing" on, PPPoE (IPv4) sessions can't be established any
more, even if user is correctly authenticated by radius. It's same on
12.2-31.SBxx or 12.2.33SRD3. Any ideas?

br saso

default only ipv4: - Ok
Nov 12 12:06:29: PPP: Alloc Context [2020BEC8]
Nov 12 12:06:29: ppp26 PPP: Phase is ESTABLISHING
.
.
.
Nov 12 12:06:29: ppp26 PPP: Phase is AUTHENTICATING, by this end
Nov 12 12:06:29: ppp26 CHAP: O CHALLENGE id 1 len 30 from "bras-test"
Nov 12 12:06:29: ppp26 LCP: State is Open
Nov 12 12:06:29: ppp26 LCP: I IDENTIFY [Open] id 4 len 18 magic
0x0F71368DMSRASV5.10
Nov 12 12:06:29: ppp26 LCP: I IDENTIFY [Open] id 5 len 21 magic
0x0F71368DMSRAS-0-PC182
Nov 12 12:06:29: ppp26 CHAP: I RESPONSE id 1 len 34 from "saso at amis.net"
Nov 12 12:06:29: ppp26 PPP: Phase is FORWARDING, Attempting Forward
Nov 12 12:06:29: ppp26 PPP: Phase is AUTHENTICATING, Unauthenticated User
Nov 12 12:06:29: ppp26 PPP: Sent CHAP LOGIN Request
Nov 12 12:06:30: ppp26 PPP: *Received LOGIN Response PASS*
Nov 12 12:06:30: ppp26 PPP: Phase is FORWARDING, Attempting Forward
Nov 12 12:06:30: Vi2.1 PPP: Phase is AUTHENTICATING, Authenticated User
.
.
.


with ipv4 and ipv6: - Fail
Nov 12 12:03:59: PPP: Alloc Context [2020BEC8]
Nov 12 12:03:59: ppp25 PPP: Phase is ESTABLISHING
.
.
.
Nov 12 12:03:59: ppp25 PPP: Phase is AUTHENTICATING, Unauthenticated User
Nov 12 12:03:59: ppp25 PPP: Sent CHAP LOGIN Request
Nov 12 12:03:59: ppp25 PPP: *Received LOGIN Response PASS*
Nov 12 12:03:59: ppp25 PPP: Phase is FORWARDING, Attempting Forward
Nov 12 12:03:59: ppp25 PPP DISC: Lower Layer disconnected
Nov 12 12:03:59: ppp25 PPP: Sending Acct Event[Down] id[27]
Nov 12 12:03:59: ppp25 CHAP: O FAILURE id 1 len 26 msg is
"Authentication failure"
Nov 12 12:03:59: ppp25 LCP: O TERMREQ [Open] id 2 len 4
Nov 12 12:03:59: ppp25 LCP: Event[CLOSE] State[Open to Closing]
Nov 12 12:03:59: ppp25 PPP: Phase is TERMINATING
Nov 12 12:03:59: ppp25 LCP: Event[CLOSE] State[Closing to Closing]
Nov 12 12:03:59: ppp25 LCP: Event[DOWN] State[Closing to Initial]
Nov 12 12:03:59: ppp25 PPP: Phase is DOWN
Nov 12 12:03:59: ppp25 PPP: Free Context [2020BEC8]





configuration

aaa authentication ppp adsl group adsl
aaa authorization network adsl group adsl if-authenticated
aaa accounting network adsl start-stop group adsl


bba-group pppoe global
 virtual-template 1
 vendor-tag circuit-id service
 vendor-tag remote-id service
 vendor-tag dsl-sync-rate service
 sessions per-vlan limit 32000
 sessions auto cleanup

interface GigabitEthernet0/2.6
 encapsulation dot1Q 6 native
 pppoe enable group global

interface Virtual-Template1
 description ADSL PPPoE
 mtu 1492
 ip unnumbered Loopback0
 ip verify unicast reverse-path
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip tcp adjust-mss 1452
 no logging event link-status
 peer default ip address pool adsl
 ppp authentication chap callin adsl
 ppp authorization adsl
 ppp accounting adsl
 ppp ipcp address required

ip radius source-interface Loopback0 vrf default
radius-server attribute 44 include-in-access-req vrf default
radius-server attribute 44 extend-with-addr
radius-server attribute 32 include-in-access-req
radius-server attribute 32 include-in-accounting-req
radius-server attribute 55 include-in-acct-req
radius-server attribute nas-port format d
radius-server attribute 61 extended
radius-server attribute 31 send nas-port-detail mac-only