active and hot 10g supervisor module behavior

kwanm63 · ‎12-06-2007

If I have one access 6509 switch connected to 2 core 6509 switch as follows..

Switch a - dual 10g sup..

slot 5 -- Active

slot 6 - Hot

Slot 5, supA-connected to core 1

Slot 6 , sup B- connected to core 2.

Running MST spanning tree

Since slot 5 is active, I expected my traffic to be following through there primarily.

But if I lose my link from core 1 to supA, will traffic then kick over to supB even though it's only in 'hot' mode ? I'm getting conflicting answers...

due to port count restriction on my core switches, I cannot do one link to core 1 and one link to core 2

on supA and the same on supB.

I also cannot do a full layer 3 to the core for now.

thanks

all

merritt81 · ‎12-06-2007

Hi there, I believe there may be some mis-understanding regarding the redundancy of the supervisors. In order to force the redundant supervisor to forward frames you need to make the hot sup process traffic.

kwanm63 · ‎12-06-2007

therein lies my problem. Is that possible ?how do you make a 'hot' module take over if the active module is still 'active' but the link to on the 'active' module drops....

merritt81 · ‎12-07-2007

I would recommend reading through the 6500 configuration guide. I have linked you directly to the redundancy configuration section.

http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/nsfsso.html

kwanm63 · ‎12-07-2007

I think what you are implying is that unless I manually flip the secondary sup to make it active, there is no automatic redundancy.