Okay, without going into too much d 1

[jdavis1]

Okay, without going into too much detail, I have a Cat6500 (CatOS 8.1) w/MSFC2. I have a VLAN (vlan 60) defined that I will be migrating users to, and a corresponding VLAN interface defined on the MSFC that will be the default gateway for the new VLAN.

The VLAN (VLAN 5) that I will be migrating users from is on a Cat5500 using a 7206VXR as a one armed-router. I am trunking this VLAN over to the cat6500.

Back on the 6500, I have VLAN 5 defined. The only port that carries VLAN 5 is the trunk to the Cat5500. I want to bridge the old and new VLAN together so that I can slowly migrate users ove. On the MSFC, the config looks something
like this:

!
interface Vlan5
no ip address
bridge-group 9
!
interface Vlan60
ip address 142.79.3.129 255.255.255.128
ip helper-address 147.154.143.130
bridge-group 9

There is a transparent bridge set up between the VLANs to bridge all traffic between them. Okay so far?

My problem is that VLAN60 is in a down/down state on the MSFC because there are no ports enabled and active in VLAN60 on the cat6500. Only when one comes active does the Vlan60 interface become active on the MSFC.

Anyone know a simple way around this problem?

 

[Nettekkie1010]

Make an Ethernet loopback connector and plug it into a port which resides in VLAN60.
Use one connector and two wires:
Pin 1 to pin 3
Pin 2 to pin 6

Crimp it and connect it. If you dont have a crimper and cable ends simply cut one end of a CAT-5, strip the wires, and connect:
orange-White to green-white
orange to green

Haveagoodun!
Nettekkie1010

 

[jdavis1]

Okay, I hadn't considered a hardware solution. But I took your idea and modified it a bit. I just defined vlan 60 on the Cat6500 trunk to the 5500. DTP is turned off on this trunk (nonegotiate) so vlan 60 doesn't need to exist on the 5500. Since it doesn't exist on the 5500, there are no CAM entries on this trunk for that VLAN, thus, no real data gets passed. It brought the Vlan60 interface up on the MSFC, which is what I wanted to do.

Thanks for the help.