2626 stacking + Management VLAN

Krzysztof Oledzki — Wed, 22 Oct 2008 05:28:00 GMT

I noticed a strange problem with a virtual stacking. I have several 2626 stacks that look like:

XXXX-sw1-0# sh stack

Stacking - Stacking Status (This Switch)
Stack State : Commander
Transmission Interval : 60
Stack Name : XXXX-sw1 Number of members : 3
Auto Grab : No Members unreachable : 0

SN MAC Address System Name Device Type Status
-- ------------- ---------------- --------------------- -------------------------
0 0014c2-aaaaaa XXXX-sw1-0 ProCurve 2626 Commander Up
1 001185-bbbbbb XXXX-sw1-1 ProCurve 2626 Member Up
2 001185-cccccc XXXX-sw1-2 ProCurve 2626 Member Up
3 0014c2-dddddd XXXX-sw1-3 ProCurve 2626 Member Up

My problem is that I'm able to telnet from the commander to a member by id only when there is no "Management VLAN" set on the member switch:

# sh vlans

Status and Counters - VLAN Information

Maximum VLANs to support : 16
Primary VLAN : Default VLAN
Management VLAN :

802.1Q VLAN ID Name Status Voice
-------------- ------------ ------------ -----
1 Default VLAN Port-based No
33 VLAN33 Port-based No

If I set it:

# sh vlans

Status and Counters - VLAN Information

Maximum VLANs to support : 16
Primary VLAN : Default VLAN
Management VLAN : Default VLAN

802.1Q VLAN ID Name Status Voice
-------------- ------------ ------------ -----
1 Default VLAN Port-based No
33 VLAN33 Port-based No

... everything works unit I disconnect but then "telnet 1" hangs for ~2s and I'm back on the Commander device. Telnet by the IP address still works, but of course I have to enter my username & password.

topic 2626 stacking + Management VLAN in Switches, Hubs, and Modems

2626 stacking + Management VLAN