FW: [Fwd: Re: [AG-TECH] High res video streams, in AG VIC session]

[Christoph Willing]

More info - I have a multicast beacon client running which appears as
machine p2.vislab.usyd.edu.au (129.78.157.82) at
http://beaconserver.accessgrid.org:9999. It shows the problem very
neatly - we see lots of sites' multicast traffic but ours is invisible.

chris

On Tue, 2003-02-18 at 15:05, John Barlow wrote:
> 
> Sorry guys - turns out I didn't address my email correctly, so the ag-tech
> list (and mcast-support) missed out.  Here is a re-send, and I will need
> some help to find the cause and fix it.
> 
> 
> John Barlow
> 
> 
> 
> -----Original Message-----
> From: John Barlow [mailto:John.Barlow at aarnet.edu.au] 
> Sent: Thursday, 6 February 2003 11:10 AM
> To: 'Christoph Willing'; 'Greg Wickham'
> Cc: 'Stephen Charles Tolhurst'
> Subject: RE: [Fwd: Re: [AG-TECH] High res video streams, in AG VIC session]
> 
> 
> 
> Chris/Greg/Stephen - ignore my previous email.
> 
> AG-TECH - I am a network admin in Australia, and have access to all the
> routers between the University of Sydney boundary and the PNWGpop in
> Seattle.  I know something about multicast, but definitely not everything !
> If you want any diagnostics just ask me.
> 
> Chris - skip ahead ...
> 
> AG-TECH - we have a backbone on the east coast of Australia called GrangeNet
> (multiple 2.5G PoS links) and an overseas connection using the Southern
> Cross Cable Network (SCCN) submarine cable (two 155M PoS links).  These are
> conceptually different management domains, but I'm in both :-)  The router
> "edge1.nsw" (below) is in GrangeNet, the router "seattle" is the seattle end
> of the SCCN network (located in the PNWGpop).
> 
> Chris - I can see you in Canberra on my WinXP laptop using "vic
> 233.2.178.9/17018".
> 
> When I do this I can see the multicast route that is set up:
> 
> ==== START sh ip mroute ====
> edge1.nsw#sh ip mroute 233.2.178.9  
> IP Multicast Routing Table
> Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C - Connected,
>        L - Local, P - Pruned, R - RP-bit set, F - Register flag,
>        T - SPT-bit set, J - Join SPT, M - MSDP created entry,
>        X - Proxy Join Timer Running, A - Candidate MSDP Advertisement,
>        U - URD, I - Received Source Specific Host Report, Z - Multicast
> Tunnel
>        Y - Joined MDT-data group, y - Sending to MDT-data group, s - SSM
> Outgoing interface flags: H - Hardware switched
> Timers: Uptime/Expires
> Interface state: Interface, Next-Hop or VCD, State/Mode
> 
> (*, 233.2.178.9), 06:19:12/stopped, RP 202.0.98.13, flags: SP
>   Incoming interface: Null, RPF nbr 0.0.0.0
>   Outgoing interface list: Null
> 
> (128.105.162.21, 233.2.178.9), 01:06:53/00:03:26, flags: T
>   Incoming interface: Vlan3, RPF nbr 202.0.98.98, Mbgp, RPF-MFD
>   Outgoing interface list:
>     POS4/1, Forward/Sparse, 00:00:19/00:03:10, H
>     GE-WAN7/2, Forward/Sparse, 01:06:53/00:02:41, H
> 
> (129.78.157.90, 233.2.178.9), 00:00:19/00:03:10, flags: T
>   Incoming interface: GE-WAN7/2, RPF nbr 202.0.98.74, Mbgp, RPF-MFD
>   Outgoing interface list:
>     POS6/1, Forward/Sparse, 00:00:20/00:03:09, H
> 
> (192.94.63.87, 233.2.178.9), 00:00:18/00:03:25, flags: T
>   Incoming interface: POS4/1, RPF nbr 202.0.98.21, Mbgp, Partial-SC
>   Outgoing interface list:
>     GE-WAN7/2, Forward/Sparse, 00:00:18/00:03:11
> 
> edge1.nsw# 
> ==== END sh ip mroute ====
> 
> And I can see the MSDP source-active cached entry in the Seattle SCCN
> router:
> 
> ==== START sh ip msdp ====
> seattle#sh ip msdp sa-cache 233.2.178.9 
> MSDP Source-Active Cache - 2344 entries
> (128.105.162.21, 233.2.178.9), RP 144.92.20.137, MBGP/AS 59,
> 06:22:24/00:05:53
> (129.78.157.90, 233.2.178.9), RP 129.78.255.3, MBGP/AS 64609, 4d03h/00:05:35
> (192.94.63.87, 233.2.178.9), RP 192.94.63.254, MBGP/AS 7572,
> 00:01:14/00:05:58
> seattle#
> ==== END sh ip msdp ====
> 
> 
> I'm just about to pop into a meeting, more debugging soon (any requests from
> AG-TECH for commands I should run ?)
> 
> 
> John Barlow
> AARNet and GrangeNet
> +61 2 62223553 (desk)
> +61 413 880207 (mobile)
-- 
Chris Willing                      Telephone   (61-2) 9351 3005
VisLab, A28                        Facsimile   (61-2) 9351 1880
University of Sydney
NSW 2006 Australia                http://www.vislab.usyd.edu.au