topic brocade interface won't talk to cisco interface in ICX Switches

brocade interface won't talk to cisco interface

david_wheeler_e — Thu, 25 Jun 2020 16:43:12 GMT

ICX6450-48p stack of 6 switches (one uplink port) no longer communicate with cisco layer 3 switch. It was working but just stopped. The only thing that changed was removing a port channel from the cisco and a lag from the ruckus (brocade).

Re: brocade interface won't talk to cisco interface

jijo_panangat — Sun, 28 Jun 2020 10:46:00 GMT

Hi Dave,

When you remove the Port channel, the associated ports might get disabled to prevent a potential loop, Pls get this verified.

Thanks
Jijo

Re: brocade interface won't talk to cisco interface

david_wheeler_e — Sun, 28 Jun 2020 13:18:30 GMT

I appreciate the reply but we did in fact check the port status on the cisco and the brocade...all are up...

Re: brocade interface won't talk to cisco interface

jijo_panangat — Mon, 29 Jun 2020 02:35:18 GMT

Hi Dave,

Ok, I believe Cisco L3 is the gateway switch, Do you see any arps learned on it from the 6450 ?

Re: brocade interface won't talk to cisco interface

david_wheeler_e — Tue, 30 Jun 2020 13:47:06 GMT

I did a show arp and I dont see the ip for the brocade...

Re: brocade interface won't talk to cisco interface

david_wheeler_e — Tue, 30 Jun 2020 14:33:44 GMT

Problem solved with your holp. default vlan wasnt being routed added dual-mode and all is well. Thanks for your help. The arp suggestion is what led my to the solution. Not sure of why it was working and then not...Thanks again.

Re: brocade interface won't talk to cisco interface

jijo_panangat — Wed, 01 Jul 2020 07:02:14 GMT

Great! I am glad it helped.

Thanks
Jijo

Re: brocade interface won't talk to cisco interface

sarfarazqadry20 — Fri, 07 Mar 2025 14:01:16 GMT

Dear David i need your help. Actually I have one side ICX6450-48p and the other Cisco 3850 L3 Switch i tried make Trunk and Tagg for commnication but not working at all can you share your uplink configuration or check my configuration what i am missing here

===========
ICX6450-48p
================
!
trunk ethe 1/2/1 to 1/2/4
!
vlan 1 name DEFAULT-VLAN by port
!
vlan 2 by port
tagged ethe 1/1/1 to 1/1/44 ethe 1/2/1 to 1/2/4
!
vlan 3 by port
tagged ethe 1/1/1 to 1/1/44 ethe 1/2/1 to 1/2/4
!
vlan 100 by port
tagged ethe 1/2/1 to 1/2/4
---
interface ethernet 1/1/44
dual-mode 3
inline power
voice-vlan 2
broadcast limit 16384
unknown-unicast limit
!
uplink----------
interface ethernet 1/2/1
speed-duplex 1000-full-master
!
!
!
!
!
!
!
end

======================
Cisco Switch c3850
===================

vlan 2
name voice
!
vlan 3
name data
!
vlan 100
name Mgmgt
!
--

interface GigabitEthernet1/0/48
switchport access vlan 3
switchport mode access
switchport voice vlan 2
spanning-tree portfast
!

uplink------
interface TenGigabitEthernet1/1/1
switchport trunk allowed vlan 1-3,100
switchport mode trunk