06-24-2008 06:48 AM
I am working through an MPLS network that doesn't support VPLS. I have a question related to how I can bridge VLANs between two sites using my switches connected to the providers MPLS network. I believe that DLSw will be able to bridge the traffic on a per-VLAN basis using bridge-groups, but I wanted to know if this method would be discouraged.
My endpoint switches are a ME6524 and C6503 going into the providers network.
06-24-2008 07:10 AM
I have never done it, but, if using the bridge-group approach, what about GRE tunnels?
Anyway, I would recommend L2TPv3 (but I don't think there is an IOS version for the C6503 which supports it). In the C7600 IOS 12.2(33)SRC and above supports it. You may also use the 1800, 2800, 3800, 1700, 2600XM.
If you are running MPLS over the MPLS service, with the C6500 you may try pseudowires/xconnect with mpls encapsulation.
-W
06-25-2008 06:27 AM
That's the plan I'm taking at this point...pseudowires with MPLS encapsulation. I'll let you know how it goes!
Michael
06-25-2008 08:18 AM
Hi Mike:
Can you also post your configs once you get it to work?
Thx.
JD
06-26-2008 12:23 AM
either you can use the mpls or l2tpv3.
pseudowire-class tulip
encapsulation l2tpv3/mpls
ip local interface Loopback0
end
interface GigabitEthernet x.x
encapsulation dot1Q 419
xconnect
end
regards
shivlu
06-26-2008 05:24 AM
OK, well my platforms (6503 / 6524) and IOS limit the choices I have available to me for the pseudowire configuration.
I have the following that looks "right" but doesn't ever get to an "UP" condition when I do a "show mpls l2transport summary".
On the 6503 (PE1):
interface GigabitEthernet3/1
description Customer VLAN Access - Site 1 (CUST1)
no ip address
no cdp enable
!
interface GigabitEthernet3/1.123
encapsulation dot1Q 123 native
ip vrf forwarding Customer1
ip address 11.11.11.1 255.255.255.252
no cdp enable
!
interface GigabitEthernet3/1.999
description Layer2 Customer Interface
encapsulation dot1Q 999
no cdp enable
xconnect 4.0.0.2 501 encapsulation mpls
!
On the CE:
interface FastEthernet0/1
description Customer #1 outbound interface
switchport access vlan 123
switchport trunk encapsulation dot1q
switchport trunk native vlan 123
switchport trunk allowed vlan 123,999
switchport mode dynamic desirable
no ip address
duplex full
speed 100
!
interface Vlan123
ip address 11.11.11.2 255.255.255.252
!
interface Vlan999
ip address 5.5.5.1 255.255.255.0
!
06-26-2008 05:33 AM
Here is the destination PE config:
PE2:
!
interface GigabitEthernet1/21.999
description Layer 2 Customer
encapsulation dot1Q 999
xconnect 4.0.0.1 501 encapsulation mpls
!
sh mpls l2transport vc
Local intf Local circuit Dest address VC ID Status
------------- -------------------- --------------- ---------- ----------
Gi1/21.999 Eth VLAN 999 4.0.0.1 501 DOWN
On the PE1 switch:
sh mpls l2transport vc
Local intf Local circuit Dest address VC ID Status
------------- -------------------- --------------- ---------- ----------
Gi3/1.999 Eth VLAN 999 4.0.0.2 501 DOWN
06-30-2008 12:30 PM
Any other ideas?
06-30-2008 02:55 PM
Are you sure the CE port is operating in trunk mode? Have you tried forcing switchport mode to trunk?
There are certain features on the 6500 that actually work only if the port is in a SIP200/400/600 interface. But, even in those cases the xconnects will be up.
From the output seems is not coming up at all.
Are there labels for the 4.0.0.x destinations?
Can you do the "sh xconnect all" command? You should see Local UP and Remote DOWN.
-W
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