[c-nsp] Stuck 10GE interface / XENPAK doesnt hot swap

[Rodney Dunn]

If you have recreated it tell them how to do it and tell them to
do it in their lab and file a bug on it.

On Thu, Mar 15, 2007 at 10:51:17AM +0000, Stephen Wilcox wrote:
> Despite the silence I thought I'd update in case this is useful at a later time to someone...
> 
> I replicated the non-hot-swap XENPAK issue, basically if you remove the XENPAK the switch  (3750G-16TD) will fail to see a replacement when inserted, even putting back the original XENPAK doesnt bring it up (and it is not present according to the idprom). It was necessary to reboot the switch with the XENPAK in for it to work.
> 
> 
> Regarding the stuck port.. I have also replicated that problem. Initiating a broadcast storm triggers the issue (altho it seems to start by its self under normal conditions if there is high enough levels of legitimate broadcast).
> 
> After doing so I needed to shut the port and remove most or all VLANs from both sides of the link then bring the port back up in order to reset it. I note during the issue we appear to process no frames (no MAC addresses, STP received counters stop) despite counters increasing on the interface. We get a lot of PAUSE frames received too even tho its not supported on the tx and disabled on the rx. If you want really odd, the PAUSE frames continue to show received even after you pull out the fiber!
> 
> I can find nothing in bug toolkit, google and have got nothing back on a support ticket.
> 
> Steve
> 
> 
> On Tue, Mar 13, 2007 at 04:46:11PM +0000, Stephen Wilcox wrote:
> > If I may reply to my own post.. this got weirder..
> > 
> > Swapping out the optics (10GBase-LR XENPAKS) and the switch fails to see the newly inserted XENPAK. 
> > 
> > show inventory shows the original serial number (whether or not its inserted)
> > show int status show the 10G-LR media (whether or not its inserted )
> > show idprom says there is no module present
> > 
> > anyone ever seen this, i have this on two switches.. so presumably its a software bug?
> > 
> > Steve
> > 
> > On Fri, Mar 09, 2007 at 06:10:46AM +0000, Stephen Wilcox wrote:
> > > Hi,
> > >  anyone ever see a 10GE port get its transmit stuck?
> > > 
> > > C3750, 12.2(35)SE. Optic is a Cisco 10GBase-LR
> > >   Full-duplex, 10Gb/s, media type is 10GBase-LR
> > > 
> > > I note that:
> > > 
> > > output claims to be sending:
> > >   Last input 00:00:16, output 00:00:21, output hang never
> > > 
> > > theres no queue:
> > >   Output queue: 0/40 (size/max)
> > > 
> > > counters are stopped:
> > >      14124319 packets output, 1356450431 bytes, 0 underruns
> > > 
> > > apparently bouncing the port fixes the issue.. any idea what the problem could be?
> > > 
> > > Steve
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