From: k c (jwongccie@yahoo.com.hk)
Date: Sun Jul 11 2004 - 12:20:39 GMT-3
Hi Group,
I have several questions about multicast:
1) Would like to confirm again whether the following situation must need a GRE tunnel between two spokes.
My topology: All frame-relay physical interfaces (no sub-interfaces)
r5 (hub) ------ r6
/ \
/ \
/ \
/ \
r1 r2
| |
----- -----
(f0/0) (f0/0)
I have configured an igmp join-group 231.1.1.1 on r3 f0/0 and 232.1.1.1 on r4. No matter I configured auto-rp, bsr, anycast etc.., I can ping 231.1.1.1 and 232.1.1.1 on each router. I haven't use GRE tunnel in this case. In this example, I use SM, anycast with bsr.
R1#sh ip pim rp map
PIM Group-to-RP Mappings
Group(s) 224.0.0.0/4
RP 9.9.9.9 (?), v2
Info source: 9.9.9.9 (?), via bootstrap, priority 0
Uptime: 03:50:18, expires: 00:02:05
R1#ping 232.1.1.1
Type escape sequence to abort.
Sending 1, 100-byte ICMP Echos to 232.1.1.1, timeout is 2 seconds:
Reply to request 0 from 142.1.125.2, 68 ms
Reply to request 0 from 142.1.125.2, 124 ms
Reply to request 0 from 142.1.125.2, 104 ms
Reply to request 0 from 142.1.125.2, 88 ms
R1#sh ip mroute 232.1.1.1
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
Timers: Uptime/Expires
Interface state: Interface, Next-Hop or VCD, State/Mode
(*, 232.1.1.1), 00:00:08/stopped, RP 9.9.9.9, flags: SPF
Incoming interface: Serial2/0, RPF nbr 142.1.125.5
Outgoing interface list: Null
(150.100.1.1, 232.1.1.1), 00:00:08/00:03:28, flags: FT
Incoming interface: FastEthernet1/0, RPF nbr 0.0.0.0, Registering
Outgoing interface list:
Serial2/0, 142.1.125.5, Forward/Sparse, 00:00:08/00:03:21
2) Again, in FrameRelay, same configuration as described in 1, how can I use auto-rp (not bsr) since we must use sparse-mode if ip pim nbma is configured. Assuming the question stated that must not convert to dense mode.
3) How many methods can do traffic control and rate-limiting on milticast traffic?
ip multicast ratelimit, ratelimit access-group (define an access-list containing multicast address range??), anymore?
In catalyst 3550: switchport multicast 10, storm-control multicast level 10
Thanks.
---------------------------------
%~7s Yahoo! Mail - 100 MB 'K6O9q6l@x&s6q
mail.yahoo.com.hk
This archive was generated by hypermail 2.1.4 : Sun Aug 01 2004 - 10:11:52 GMT-3