02-17-2010 03:38 AM - edited 03-06-2019 09:44 AM
Hi we have Catalyst 4507R switch with 2 SUP V modules in slots 1 and 2 . These switches are placed in the Access layer . We have a 2 Cat 6509 switches at Core . Currently we have Cat 4507R Uplinks connected to core in this manner .
4500
1/1 ---> 6509-1 5/2
1/2 ---> 6509-2 6/2
There are no cables connected to Standby SUP V in 4507 i.e 2/1 and 2/2 are free .
If the Active SUp in slot1 fails and the Standby SUP in slot2 becomes active the Uplinks would go down beacuse there are no cables connected to the Core ?
If so do we need to connect cables to 2/1 and 2/2 to the Core as well ?
Please suggest .....
02-17-2010 05:00 AM
Hello,
in recent installations of 4507R switches we have been able to use two uplinks:
one on active supervisor and one on standby supervisor with SSO strategy
Mod Redundancy role Operating mode Redundancy status
----+-------------------+-------------------+----------------------------------
3 Active Supervisor SSO Active
4 Standby Supervisor SSO Standby hot
sh cdp n | inc Ten
Ten 3/1 166 R S I WS-C6509- Ten 3/4
Ten 4/1 176 R S I WS-C6509- Ten 3/4
in my case they are two SupII+10 GE
I would suggest you to move one uplink to standby supervisor so without increasing the number of links
you can achieve redundancy of links and supervisors.
It is interesting that link on standby supervisor is active and can be used as a L2 trunk port
Hope to help
Giuseppe
02-17-2010 11:21 PM
Hi Guislar,
Thanks for the reply .
So as you said we can move one cable on the Active SUP port which is not in STP forwarding state to the Standby SUP port 2/1 .
After doing that the interface 2/1 would show up or it will remain in the down state only ?
And whenevr the port 1/1 fails or its cable connected to it fails the port 2/1 would be able to take the traffic ? or any additional configuration is required to achieve that
02-18-2010 03:21 AM
Hello,
before doing anything verify that SSO is active and working with
sh redundancy
or looking at the end of
sh module
>>
>>After doing that the interface 2/1 would show up or it will remain in the down state only ?
it will up and can be used for some vlans
>>And whenevr the port 1/1 fails or its cable connected to it fails the port 2/1 would be able to take the traffic ?
yes
we tested this with Sup II+10GE but it is reasonable to happen also with your Sup V
there are some commands in newer supervisors to choice between 10GE and 1GE ports in groups.
reports a table with uplink options with different types of L3 supervisors.
It reports options only for the active supervisor.
So this is a point of attention that requires further investigations
the datasheet for Sup II-10GE reports a similar table
So I'm confident it should work but I would suggest to perform a test on a single device in a maintanance time window for safety.
Hope to help
Giuseppe
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