All things related to multicast

["W. Bruce Curtis" <>]

  I just got back to my office and checked.  We are receiving the
session announcement now in sdr.  I also just checked the msdp cache
in our router and although we last heard the announcement less than
2 minutes ago the announcement still isn't in the msdp cache.

  So adding 'ip sdr listen' fixed the symptom (thanks) but the source of
the problem hasn't been fixed yet.

i2.ndsu>show ip sdr "NASA TV - Broadcast from NASA HQ"
SDR Cache - 78 entries
Session Name: NASA TV - Broadcast from NASA HQ
  Description: NASA TV - Broadcast from NASA Headquarters
  Group: 0.0.0.0, ttl: 0, Contiguous allocation: 1
  Lifetime: from 08:43:32 cdt Feb 23 2000 until 09:43:32 CDT Aug 24 2000
  Uptime: 00:28:44, Last Heard: 00:01:44
  Announcement source: 131.182.10.250, destination: 224.2.127.254
  Created by: ellery 3154257059 3160305812 IN IP4 131.182.10.250
  Phone number: +01 202 6518500
  Email: 

     (Jeff Fesler)
  URL: http://www.nasa.gov/ntv
  Media: audio 24920 RTP/AVP 0
    Media group: 224.2.171.2, ttl: 127
  Media: video 51800 RTP/AVP 31
    Media group: 224.2.171.2, ttl: 127
    Attribute: framerate:9
    Attribute: quality:8
    Attribute: grayed:0

i2.ndsu>show ip msdp sa-cache | include 131.182.10.250
(131.182.10.250, 224.2.171.2), RP 198.10.80.1, MBGP/AS 24, 1d06h/00:05:07
i2.ndsu>


> Could you confirm this is working now ??  I added 'ip sdr listen' to the
> GreatPlains interface on the KSCY router.  I'd guess someone is sending 
> bogus
> joins causing the MSDP SAs for (131.182.10.250, 224.2.127.254) to be 
> supressed.
> 
> - Matt
> 
> 
> 
> On Thu, Feb 24, 2000 at 05:04:38PM -0600, Gordon Rogier wrote:
> > Bruce, I am forwarding this up to 
> > .
> >   Matthew
> > Davy at Abilene is wanted to talk about this at the FoD meeting and it
> > would probably help him to have some additional acknowledgement of this
> > problem while the meeting are going on.
> > 
> > --*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*--
> > Gordon Rogier                        
> > 
> >             
> > Network Engineer                     785-864-0381wk 785-550-4468 cell
> > Great Plains Network                 785-864-9330 FAX
> > 
> > On Thu, 24 Feb 2000, W. Bruce Curtis wrote:
> > 
> > > 
> > >   Jeff, the audio and Video for the NASA TV group is making it here
> > > now.  However we aren't receiving the advertisement in SDR.
> > > 
> > >   Gordon, I see that the Abilene routers are receiving the NASA TV
> > > announcement and it does show up in their SDR cache as being updated
> > > every couple of minutes.  It also looks like the Abilene Kansas City
> > > router is not doing sdr listen towards the Kansas City router anymore.
> > > 
> > >   So the NASA TV SDR anouncement isn't being advertised to Abilene in
> > > MSDP correctly.  However it is being leaked to the Abilene routers
> > > via the sdr listen side effect but it is no longer being leaked to
> > > GPN via the sdr listen side effect.
> > > 
> > > Thanks,
> > > -- 
> > > Bruce Curtis                     
> > > 
> > > Network Consultant               701-231-8527
> > > Certified NetAnalyst II          My computer loves NeXTmail.
> > > North Dakota State University    
> > > 
> > 
> 


-- 
Bruce Curtis                     

Network Consultant               701-231-8527
Certified NetAnalyst II          My computer loves NeXTmail.
North Dakota State University