[e-nsp] multicasts problems (x450, 12.4.2.17 patch 1-10)

Shankar shankarp5 at gmail.com
Thu Jan 27 01:28:32 EST 2011 

Hello,

Looks like some sort of table mismatch conditon, since all the log
entries report ,"entry exists"...so the add entry request by software seems
to have failed...

"What led to this condition ??"... would need further debugging from your
side...

The mcast groups that have reported this problem i.e. effffffa
(239.255.255.250), e00000fc(224.0.0.232), e00000fc (224.0.0.253) are locally
scoped addresses. I dont think they are part of your IPTV streams.

So a mismatch in these shouldnt have resulted in IPTV failure. Unless, there
are lot of these entries and has led to the entire IPMC (IP multicast) table
going into a mismatch condition.

I am not sure what the multicast network setup is, but it would be a good
idea to ensure locally scoped addresses are limited to LAN and if these are
not in use are blocked via acl's....examining the number of entries and the
IPMC table details (i.e if too many entries are tied to the same egress, or
there are too many source and subscribers to the same group etc), might help
you minimise the churning of entries and help you get to the root cause
faster...


regards,
Shankar

On Sat, Jan 22, 2011 at 2:08 AM, Marcin Kuczera <marcin at leon.pl> wrote:

>
> Hello,
>
> summit x450, ExtremeXOS version 12.4.2.17 v1242b17-patch1-10
>
> IPTV fails, switch is logging info as below.
>
> Anyone knows what could be wrong ?
> In the night dowdgrade to 12.4.1.7 is planned.
>
> Regards,
> Marcin
>
>
> 01/21/2011 15:57:34.60 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e37,effffffa,2113 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:57:34.59 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:40.17 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654923,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:40.15 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654bbb,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:39.70 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654e7c,e00000fc,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:38.82 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:38.80 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:38.55 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e5d,effffffa,2113 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:38.24 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e37,effffffa,2113 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:37.90 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e56,effffffa,2115 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:52:37.66 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,effffffa,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:49:46.58 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654e7c,effffffa,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:43:44.84 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654923,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:42:25.73 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:40:43.14 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:36:29.95 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:35:59.55 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e37,e00000fc,2113 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:33:12.90 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:30:26.74 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:29:53.80 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=5765482b,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:28:51.86 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654923,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:28:50.49 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654bbb,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:25:42.73 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:24:36.09 <Info:AAA.logout> User admin logout from telnet
> (91.195.135.101)
> 01/21/2011 15:24:18.57 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:21:20.12 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654bbb,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:18:21.06 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:18:13.49 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:17:47.41 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e5d,e00000fc,2113 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:17:26.36 <Info:AAA.authPass> Login passed for user admin
> through telnet (91.195.135.101)
> 01/21/2011 15:13:51.54 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654923,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:13:49.80 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654bbb,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:11:59.60 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:10:43.46 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:08:48.07 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c8f,e00000fc,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:08:17.05 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e88,e00000fd,2119 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:07:42.61 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e88,e00000fc,2119 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:06:21.51 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654923,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:06:19.55 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654bbb,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:05:33.25 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654c31,e00000fd,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:03:38.48 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=a9fe7913,e00000fc,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:03:13.07 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654852,e00000fc,1117 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:02:33.70 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=57654e7c,e00000fc,3029 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:01:49.99 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e88,e00000fd,2119 IPMC 93 flags 4012 unit 4, Entry exists
> 01/21/2011 15:00:12.55 <Erro:Kern.IPv4Mc.Error> Unable to Add IPmc sender
> entry s,G,v=c15d5e88,e00000fc,2119 IPMC 93 flags 4012 unit 4, Entry exists
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