From: ccie2be (ccie2be@nyc.rr.com)
Date: Thu Feb 24 2005 - 19:47:44 GMT-3
Thank you, Bob.
I knew about the first condition but that 2nd condition slipped my mind.
There's just too much info to remember.
_____
From: Bob Sinclair [mailto:bsinclair@netmasterclass.net]
Sent: Thursday, February 24, 2005 5:35 PM
To: ccie2be; Group Study
Subject: Re: mroute table interpretation
Hi Tim,
The RP sends a register stop message to the DR connected to the source when
a) The RP has no clients for the group or b) the RP has joined the SPT to
the DR and is receiving the traffic via native multicast. For more detail,
check out rfc2117.
HTH,
Bob Sinclair
CCIE #10427, CCSI 30427, CISSP
www.netmasterclass.net
----- Original Message -----
From: ccie2be <mailto:ccie2be@nyc.rr.com>
To: Group Study <mailto:ccielab@groupstudy.com>
Sent: Thursday, February 24, 2005 4:02 PM
Subject: mroute table interpretation
Hi guys,
Here's a snip of my mroute table.
r1#sh ip mr
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 for MSDP Advertisement,
U - URD, I - Received Source Specific Host Report, Z - Multicast
Tunnel
Y - Joined MDT-data group, y - Sending to MDT-data group
Outgoing interface flags: H - Hardware switched, A - Assert winner
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 231.31.31.31), 00:15:41/stopped, RP 150.1.3.3, flags: SJCLF <-- LOOK
AT THIS LINE
Incoming interface: Serial0/1, RPF nbr 142.1.13.3
Outgoing interface list:
FastEthernet0/0, Forward/Sparse, 00:15:41/00:02:41
(142.1.34.4, 231.31.31.31), 00:00:25/00:02:40, flags: LJT
Incoming interface: Serial0/1, RPF nbr 142.1.13.3
Outgoing interface list:
FastEthernet0/0, Forward/Sparse, 00:00:25/00:02:41
In the first entry (*, 231.31.31.31), notice that it says "Stopped".
Everything is working - I can ping this mcast group. But, what does
"Stopped" mean?
And, what causes the "Stopped" message to change to a time left message or
expires message?
I don't think this is a problem but can someone confirm this for me and
explain why that is there?
TIA, Tim
This archive was generated by hypermail 2.1.4 : Thu Mar 03 2005 - 08:51:25 GMT-3