Cisco Switches not seeing VLAN from Ruckus/Brocade Switch

amathias — Tue, 10 Jan 2023 15:18:44 GMT

Hi all,

I'm having an interesting issue with the Ruckus/Cisco switches on our campus.

For context, we had a scheduled power outage at our site back in December, and when power was restored, we started seeing this issue. We have all our core equipment on a generator and did not lose power. No configuration changes happened according to our backups.

Our core switch is a Ruckus ICX7650-48F. After power was restored, I could not ssh into any Cisco switch directly connected to the core. Any HP/Aruba device directly connected works with SSH and ping. The same is true for any cisco device downstream from an HP/Aruba. Our management vlan is broken between the Ruckus and Ciscos, but I need help finding where.

Although this is happening, everything around the site is running fine from an operational standpoint. We have wireless and all ethernet working.

We have a Cisco 3650 directly below the core in the rack that I've been troubleshooting. When I checked spanning tree on it, I noticed a VLAN ID mismatch with two different VLANs. Our management VLAN 4 and the Trunk VLAN 666. Nothing has changed in the configuration, and I've double-checked that there isn't a mismatch like it says. I get this error with all Cisco switches.

Below is an attachment with config and spaning-tree results from both the Ruckus and Cisco. If you need more let me know and I'll post it as well.

Thank you!

Show run Ruckus ICX7650-48F: vlan 4 name NetMgmt by port tagged ethe 1/1/31 spanning-tree vlan 666 name TRUNK by port untagged ethe 1/1/31 spanning-tree Cisco 3650: interface TenGigabitEthernet1/1/3 switchport trunk native vlan 666 switchport mode trunk show spanning-tree Ruckus: show span vlan 4 PORT 1/1/31 - FORWARDING show span vlan 666 PORT 1/1/31 - FORWARDING Cisco: show spanning-tree vlan 4 VLAN0004 Spanning tree enabled protocol ieee Root ID Priority 32772 Address 006b.f1df.9480 Cost 8 Port 10 (GigabitEthernet1/0/10) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32772 (priority 32768 sys-id-ext 4) Address f44e.0566.f780 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 15 sec Interface Role Sts Cost Prio.Nbr Type ------------------- ---- --- --------- -------- -------------------------------- Te1/1/3 Desg BKN*2 128.51 P2p *PVID_Inc show spanning-tree vlan 666 VLAN0666 Spanning tree enabled protocol ieee Root ID Priority 33434 Address 006b.f1df.9480 Cost 8 Port 10 (GigabitEthernet1/0/10) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 33434 (priority 32768 sys-id-ext 666) Address f44e.0566.f780 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 300 sec Interface Role Sts Cost Prio.Nbr Type ------------------- ---- --- --------- -------- -------------------------------- Te1/1/3 Desg BKN*2 128.51 P2p *PVID_Inc

Re: Cisco Switches not seeing VLAN from Ruckus/Brocade Switch

BenBeck — Tue, 10 Jan 2023 16:46:22 GMT

At a high-level, it looks correct: tagged vlan 4, untagged vlan666 for port 1/1/31

I would check layer 2 mac learning, arp, ping, etc. I would try to decipher if the data path is okay and if something is happening with SSH/Mgmt itself.

The best bet would be to open a support case (see my signature) and we can help follow the breadcrumbs.

topic Re: Cisco Switches not seeing VLAN from Ruckus/Brocade Switch in ICX Switches

Cisco Switches not seeing VLAN from Ruckus/Brocade Switch

Re: Cisco Switches not seeing VLAN from Ruckus/Brocade Switch