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Beginner

MPLS SVI Question

Hey,

 

I have following simple setup:

 

R1--------R2 with a trunk link in between. Connected on e0/0 (both sides)

 

Following config on R1:

 

interface Vlan1
 ip address 10.10.10.1 255.255.255.252
 mpls ip
!

 


!
interface Ethernet0/0
 switchport trunk encapsulation dot1q
 switchport mode trunk
 duplex auto
!

 

 

Same config on R2 but with ip 10.10.10.2.

 

Problem I encounter is they are not forming an ldp session. Maybe not possible?

 

show mpls ldp discovery:

 

Local LDP Identifier:
10.10.10.1:0
Discovery Sources:
Interfaces:
Vlan1 (ldp): xmit

 

show mpls interfaces

 

Interface IP Tunnel BGP Static Operational
Vlan1 Yes (ldp) No No No Yes

 

 

Any suggestions are welcome.

 

Thanks.

 
1 ACCEPTED SOLUTION

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VIP Mentor

Re: MPLS SVI Question

Hello,

 

the general guideline is that MPLS is a layer 3 connection, and an 802.1Q trunk is a layer 2 protocol, so you cannot have an 802.1Q trunk across a MPLS connection. You need something like 802.1Q tunneling to expand your VLAN.

View solution in original post

2 REPLIES 2
Highlighted
VIP Mentor

Re: MPLS SVI Question

Hello,

 

the general guideline is that MPLS is a layer 3 connection, and an 802.1Q trunk is a layer 2 protocol, so you cannot have an 802.1Q trunk across a MPLS connection. You need something like 802.1Q tunneling to expand your VLAN.

View solution in original post

Highlighted
Beginner

Re: MPLS SVI Question

Thanks, I'll look into that.
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