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A5120 Stack + LACP

 
GilPhilbert
HPE Pro

A5120 Stack + LACP

Hi,

 

I'm trying to create what I think is a fairly simple set up. I've got a pair of A5120 switches (the non-10GbE ones) so I'm trying to create a stack across them. However, I'd like to have multiple 1GbE connections between the switches for bandwidth.

 

If I create the stack between the switches (using port 23/24) it works fine, but when I add the ports to an LACP group the stack dies. If I create the LACP group first, LACP works fine but the stack just won't create. Any ideas? I'm running out of ideas!

 

LACP Configuration

interface bridge-aggregation 1
link-aggregation mode dynamic
quit
interface GigabitEthernet 1/0/23
port link-aggregation group 1
quit
interface GigabitEthernet 1/0/24
port link-aggregation group 1
quit
interface bridge-aggregation 1
port link-type trunk
port trunk permit vlan all
quit

 

Stack configuration (Switch 1)

stack ip-pool 192.168.100.1 255.255.255.0
stack stack-port 1 port GigabitEthernet 1/0/23
stack role master

Stack (Switch 2)

stack stack-port 1 port GigabitEthernet 1/0/23

 Thanks

2 REPLIES
Fredrik Lönnman
Honored Contributor

Re: A5120 Stack + LACP

are you able to do "stack stack-port 1 port bridge-aggregation1"? If not, it might not be supported. You dont tell if its 5120EI or SI you're using, but the 5120SI can be IRF-lite stacked via 1G.

---
CCIE Service Provider
MASE Network Infrastructure [2011]
H3CSE
CCNP R&S

hansvb
Frequent Advisor

Re: A5120 Stack + LACP

Hi,

 

for the stacking to work you have to use the IRF-lite on the A5120SI,A5120EI version requires 10GbE

You don't need LACP on an IRF config, select interface on each member to be IRF port and configure these.

 

Best regards,

hans