cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
550
Views
0
Helpful
1
Replies

ASA , 3750 Switch stack ,Etherchanel cross-stack and HA

bufycisco77
Beginner
Beginner

Hi Guys,

I have run into a scenario where there they use a switch stack of four 3750’s and two ASA 5540 in Active-stanby HA Pair.

ASA's are connected with 4 interfaces across stack (1 interface to each switch).

1 Etherchannels (4 ports) is configured between ASA and switch. All vlans are terminated on ASA as a subiterfaces.

somehting like:

Port-channell1

no ip address

Port-channell1.10

vlan 10

ip address 192.168.10.1 255.255.255.0 stanby 192.168.10.2

Port-channell1.20

vlan 10

ip address 192.168.20.1 255.255.255.0 stanby 192.168.20.2

..and so on..

There is about different 60-70 vlans currently terminated on ASA.

We found a problem with failover testing:

When we test the failover and fail manually with “failover active” command,

It looks like only 29 vlans can fail to backup ASA instantly , the rest can take up to 5 min.

Is there a limitation for ASA or 3750 etherchannel  in this scenario why it would not failover instantly for all vlans ?

Thanks

Martin

1 Reply 1

bufycisco77
Beginner
Beginner

sory mistake there :

Port-channell1.20

vlan 20

ip address 192.168.20.1 255.255.255.0 stanby 192.168.20.2

Martin

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: