First off, a huge thank you to fohdeesha for your documentation and easy-to-use update package, getting this switch updated, reset and configured was straightforward.
I've got a 6610 that I've been installing at home, and part of the installation process was keeping the existing cheapo rosewill 1gig x 8-port switch in place as I moved things over port at a time. Every 5-10 minutes I would get a broadcast storm, duplicating broadcasts and reflecting them back to their origins. Mostly ARP requests but some other random traffic would happen as well. It'd be 20k packets or so at a pop then the 192.168.0/24 vlan would fault the ports (possibly on the linux side?) for a few minutes, then normal traffic would resume, then a broadcast storm, repeat forever.
Setup was core router <-- 40gbe on 1/2/6, tagged --> icx6610 <-- 1gig on 1/1/1 untagged --> rosewill -> random devices. One other server attached via 10gbe (1/3/1) on the 6610, most clients still connected to the old 1gbit switch at the time.
The fault is definitely with the cheap switch, as taking it out of the picture fixes it. However, it also doesn't occur when the cheap switch is software-bridged on via a 1gbe port on the server:
I.E: rosewill <-- 1gb --> core router <-- 40gbe --> icx6610.
(Linux bridge stack, no STP, just the 1g and 40g interfaces)
I'm trying to understand what went wrong. There's no loop, and while testing I was still seeing it with only one other device attached to the rosewill. There were two switches connected together before and no broadcast storms so it specifically is acting up when connected to the 6610.
It's "fixed" but I don't like fixes where it's unexplained. They have ways of coming back and biting you in the ass.
Any ideas for diagnosing the root cause? Ideally I'd like to have the 6610 catch and squelch this kind of thing incase some other device starts acting up. Once I've finished patching everybody over I can probably setup a test VLAN as a reproduction environment.
Code:
Current configuration:
ver 08.0.30uT7f3
stack unit 1
module 1 icx6610-24-port-management-module
module 2 icx6610-qsfp-10-port-160g-module
module 3 icx6610-8-port-10g-dual-mode-module
stack disable
vlan 1 name DEFAULT-VLAN by port
vlan 172 name NFS by port
tagged ethe 1/2/6 ethe 1/3/1
router-interface ve 1
vlan 192 name INTERNAL by port
tagged ethe 1/2/6 ethe 1/3/1
untagged ethe 1/1/1 to 1/1/23
router-interface ve 2
jumbo
hostname coreswitch
ip dhcp-client disable
ip dns server-address ....
ip route 0.0.0.0/0 ....
no telnet server
snmp-server community ..... ro
interface ethernet 1/2/6
port-name ROUTER_UPLINK
interface ethernet 1/3/1
port-name SERVER
speed-duplex 10G-full
interface ve 1
ip address ....
interface ve 2
ip address ....
end
I've had to order several cables (from serial USB to USB mini) and now finally going the USB to DB9 Male --> DB9 female to USB mini. For anyone coming by here, the prior links to ebay from fohdeesha and others aren't working. I'll update with specifics if this actually works.