05-03-2005 05:28 AM - edited 03-03-2019 09:27 AM
I have a routed network, but I have a need to bridge two vlans together. What is the best method to do this? Here is a sample config I wrote, but I don't think it will work -jason
begin
hostname 3825
int ser0/0.1 point-to-point
encap hdlc
ip address 172.16.1.1 255.255.255.252
description T1 WAN carrying bridged and routed traffic
!
int fe0/0.250
ip address 10.128.250.1 255.255.254.0
description Routed traffic
!
int fe0/0.252
ip address 10.128.252.1 255.255.255.0
description Routed traffic
!
int fe0/0.253
description no ip address Bridged AP Traffic
bridge 10
!
int bvi0
bridge 10
!
bridge 10 irb
bridge 10 protocol ieee
bridge 10 route ip
end
begin
hostname 2811
!
int ser0/0/1 point-to-point
ip address 172.16.1.2 255.255.255.252
description T1 WAN
bridge 10
!
int fe0/0.240
ip address 10.128.240.1 255.255.254.0
description Routed traffic
!
int fe0/0.242
ip address 10.128.242.1 255.255.255.0
description Routed traffic
!
int fe0/0.253
description no ip address Bridged AP Traffic
bridge 10
!
int bvi0
bridge 10
!
bridge 10 irb
bridge 10 protocol ieee
bridge 10 route ip
end
05-08-2005 07:33 PM
Jason,
Your right, this won't work. The 3825 hasn't got a bridge statement on its serial interface.
From a design perspective, another solution could be to build a GRE tunnel between both routers and have the tunnel belong to the bridge.
Benefits of this would be that the Bridged packets would be encapsulated in IP and would be subject to your IGP routing protocol. Could be encrypted if you so desired, and you won't have to do too much worrying about Spanning tree etc.
Downside would be that your router is going to be a bit busier encapsulating and decapsulating the packet at either end.
HTH
Tony
05-08-2005 08:00 PM
Why don't use DLSW+, that is easy way to do it
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