Configuring 2 x EX2020-P for redundancy

muhammadzia · February 17, 2020, 9:17pm

Hi,

I would like to know if someone has experience configuring 2 EX2020-P for redundancy, i.e, if 1 goes down due to any reason, the other keeps working or vice versa.

Rough network layout is attached.

Thank you in advance for your comments, ideas or solutions.

Regards,

Zia

Layout.png (7.55 KB)

vijay_yadav · February 18, 2020, 9:43am

what kind of redundancy are you looking for? Active/Active or Active /standby .

As per the diagram, according to me the root bridge should be the cisco core switch. I hope that is correct.

I will set this topology in the lab and share the config.

thanks,
vijay

TamN · February 18, 2020, 2:39pm

You can use spanning tree to achieve redundancy with your topology. If there are multiple VLAN traffic from the unmanaged switch and the two EX2028P, you may want use MST or PVRST(per vlan spanning tree) to distribute VLAN traffic from the unmanaged switch to each EX2028P for load balancing. Although it is unlikely the unmanaged switch supports PVRST/MST modes.

muhammadzia · February 22, 2020, 9:11am

Dear Mr. Vijay,

Thank you for your reply.

I would go with Active/Standby. All VLANs would be configured on the core switches.

Regards,
Zia

vijay_yadav · February 24, 2020, 2:06pm

Hi Zia

Please see the attached text document which has the command for cisco as well as cnMatrix to configure Rapid spanning tree protocol.

thanks

vijay

stp config.txt (4.7 KB)

muhammadzia · February 25, 2020, 9:45am

Thank you, looks perfect. Will test in 2 days time and let you know.