Show active mac pool on an ACE20?

[David Williams]

I'm in a situation where I would like to add a vlan to a second context on a pair of redundant ACE modules.  As soon as I open up that shared vlan box we will expose ourselves to mac conflicts until the shared-vlan-hostid commands can be implemented and the module reloaded.  Adding the commands is not a big deal but I may not be able to schedule a reload until next week.  What I would like to do is confirm the mac pools in use by each module right now. My hope is that they grabbed unique pools when they last booted and a conflict will not be a concern now.  Does anyone have a show command that can tell me what my modules are currently using for mac pools?

[jsirstin · Accepted solution]

David,

You can issue the command "show np 1 interface iflookup"

Below is partial output from my lab.

MR0317-6500-2-ACE-8/Admin# show np 1 interface iflookup

First burnt-in MAC: 00:30:f2:75:79:fb

Last  burnt-in MAC: 00:30:f2:75:79:ff

No of burnt-in MACs: 7

Hostid: 0

Shared vlan macs currently in use (offset from 0): 0-14

Vlan-vmac indexes currently in use: 0-4

Flags:  Valid shared bridged ftstatus ssl-test normalization icmp-guard switch-m

ode ftvlan remove-eth-pad no-of-lifs

what you are looking for is the "Hostid: X" In this case it is 0 which would be the first bank of addresses. The CLI output uses values from 1-16 but the show  output uses 0-15.

Hope this helps.

Regards

Jim

[ajay chauhan]

Basically if this  command (shared-vlan-hostid)  is  added to and existing installation, then a reboot is required to get the new mac pool, if you are running active/standby reboot one by one.

shared-vlan-hostid 1

peer shared-vlan-hostid 2

Thanks.

[jsirstin]

David,

If you have live traffic running through the ACE then yes you would want to reboot them one by one. Just make sure that the values you put in the shared-vlan-hostid do not cause you to reboot with the same bank as the ACE that did not reload yet. Use the command "show ft group status" to confirm you are in an Active and Standby_hot role before you reboot the second one. You need to give it time to sync the configs and the existing connections before you reload the second ACE.

Regards

Jim