From: yakout (yesmat@xtra.co.nz)
Date: Mon Mar 06 2006 - 07:47:15 GMT-3
Hi Vishal,
Thanks for your quick reply.
From my configs below you will notice 2 major differences:
First, I am tunneling Ethernet and not VLAN interfaces (meaning no dot1q
interfaces)
Second, tunneled VLANs are different on both sides. i.e. vlan 101 on one
side and vlan 300 on the other side.
That I am sure complicates BPDU and root bridge issue.
Router1:
l2tp-class green
hidden
authentication
hostname FONHN1-B11
!
pseudowire-class red
encapsulation l2tpv3
protocol l2tpv3 green
ip local interface Loopback0
!
!
interface Loopback0
description l2tpv3 endpoint
ip address 10.1.1.4 255.255.255.255
!
interface GigabitEthernet0/1
ip address 10.1.1.1 255.255.255.252
load-interval 30
duplex full
speed 100
media-type rj45
no negotiation auto
no cdp enable
!
interface GigabitEthernet0/2
description mapping fonhn1-b11 gig 0/2 - fonauf-b4 gig 0/2
no ip address
load-interval 30
duplex full
speed 100
media-type rj45
no negotiation auto
no cdp enable
xconnect 10.115.11.47 100 encapsulation l2tpv3 pw-class red
!
Rouer2:
!
l2tp-class green
hidden
authentication
hostname FONAUF-B4
!
pseudowire-class red
encapsulation l2tpv3
protocol l2tpv3 green
ip local interface Loopback0
!
!
interface Loopback0
description l2tpv3 endpoint
ip address 10.115.11.47 255.255.255.255
!
interface GigabitEthernet0/1
description link to FONAUF-S1
ip address 10.115.11.25 255.255.255.252
load-interval 30
duplex full
speed 100
media-type rj45
no negotiation auto
!
interface GigabitEthernet0/2
description mapping fonauf-b4 gig 0/2 - fonhn1-b11 gig 0/2
no ip address
load-interval 30
duplex full
speed 100
media-type rj45
no negotiation auto
no cdp enable
xconnect 10.1.1.4 100 encapsulation l2tpv3 pw-class red
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Vishal Patel
Sent: Monday, March 06, 2006 5:18 PM
To: yesmat@xtra.co.nz; ccielab@groupstudy.com
Subject: RE: L2TPV3
Hi ,
I have configured this L2TPV3 between two POP routers.
All my POP routers are connected via ATM PVP provided by national Service
Provider.
It worked fine , I cud exchange CDP, VTP and STP informations.
We are thinking of using this for layer 2 vpns , very simple and nice
stuff.
My two pop router's config was something like this:
Router1:
l2tp-class cisco
cookie size 8
pseudowire-class cisco
encapsulation l2tpv3
protocol l2tpv3 cisco
ip local interface Loopback50
!
interface Loopback50
ip address 12.12.12.1 255.255.255.255
!
interface ATM0/0/0.50 point-to-point
ip address 25.25.25.1 255.255.255.252
no snmp trap link-status
pvc 149/50
!
interface FastEthernet6/0/0.20
encapsulation dot1Q 20
no snmp trap link-status
no cdp enable
xconnect 11.11.11.1 34 pw-class cisco
router ospf 555
log-adjacency-changes
network 12.12.12.1 0.0.0.0 area 0
network 25.25.25.0 0.0.0.3 area 0
Router2:
l2tp-class cisco
cookie size 8
pseudowire-class cisco
encapsulation l2tpv3
protocol l2tpv3 cisco
ip local interface Loopback50
!
interface Loopback50
ip address 11.11.11.1 255.255.255.255
!
interface ATM0/0/0.50 point-to-point
ip address 25.25.25.2 255.255.255.252
no snmp trap link-status
pvc 149/50
!
interface FastEthernet6/0/0.20
encapsulation dot1Q 20
no snmp trap link-status
no cdp enable
xconnect 12.12.12.1 34 pw-class cisco
router ospf 555
log-adjacency-changes
network 11.11.11.1 0.0.0.0 area 0
network 25.25.25.0 0.0.0.3 area 0
Cheers
Vishal
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
yesmat@xtra.co.nz
Sent: Monday, 6 March 2006 2:02 PM
To: ccielab@groupstudy.com
Subject: L2TPV3
Hi All,
I am trying to configure 2 redundant L2TPV3 tunels for a customer between
two geographically dispersed sites over a L3 cloud. The customer would like
a dynamic mechanism to failover from the primary to the secondary tunel in
case of loss of connectivity over the primary WAN link. I thought of using
Spanning-tree.
The primary tunel is configured and both sites are connected fine. But for
some reason BPDU's are not travelling over that tunel. Without BPDUs
spanning-tree will be useless and the failover will not occur and in fact a
loop will occur.
Does anyone know any issues that may affect BPDUs travelling over L2TPV3
tunels?
like MTU size, mismatched VLANs on both sides of the tunnel etc....?
cheers
Yakout
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