From: Joseph Brunner (joe@affirmedsystems.com)
Date: Sun Nov 18 2007 - 22:39:16 ART
We'll help you doglover, don't worry...
Go ahead and give me a ip igmp join-group 224.2.2.2 on R3's F0/0 and a
Ip pim sparse-dense.
Now post back a "show ip mroute" on R2 and R3. I want to see what's in the
Multicast O.I.L.
Thanks,
Joe
(BTW: if you want to a webex to observe this work in my lab, we can, I
played this command for hours and hours and found several ways to get its
functionality without the helper-map)
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
zorby@doglover.com
Sent: Sunday, November 18, 2007 7:44 PM
To: ccielab@groupstudy.com
Subject: Multicast helper-map - What is wrong with it?
Hello!
I am trying to simulate the forward of broadcast traffic into multicast
packets using the command "ip multicast helper-map", as the LAB8 of IE.
The network is the following:
R1 (e0/0) --- (f0/0) R2 (s0/1/0.1) <--FR--> (s0/1/0.1) R3 (fa0/0) ---
(fa0/0) R4
CONFIGS:
----------------------------------------------------------------------------
-------
***R1 - Sender Broadcast traffic via SAA:
!
rtr 1
rtr schedule 1 life forever start-time now
!
type udpEcho dest-ipaddr 255.255.255.255 dest-port 3434 control disable
timeout 1
frequency 1
!
***R2 - Receive broadcast and send into multicast packets to 224.2.2.2
group:
!
interface FastEthernet0/0
ip address 150.2.4.1 255.255.255.0
ip multicast helper-map broadcast 224.2.2.2 111
!
interface Serial0/1/0.1 point-to-point
ip address 4.4.24.4 255.255.255.0
ip pim dr-priority 0
ip pim sparse-mode
!
access-list 111 permit udp any any eq 3434
!
ip forward-protocol udp 3434
!
***R3 - Receive multicast traffic and send to broadcast address (fa0/0)
!
interface Serial0/1/0.1 point-to-point
ip address 4.4.24.2 255.255.255.0
ip pim sparse-mode
ip multicast helper-map 224.2.2.2 4.4.26.255 111
!
access-list 111 permit udp any any eq 3434
!
ip forward-protocol udp 3434
!
interface FastEthernet0/0
ip address 4.4.26.2 255.255.255.0
ip directed-broadcast
ip pim sparse-mode
!
----------------------------------------------------------------------------
------
Verification on routers:
R1:
R1#sh rtr totals-statistics
Entry number: 1
Start Time Index: *04:25:25.046 UTC Mon Mar 1 1993
Age of statistics entry (seconds): 3034
Number of initiations: 3035
R2:
I can see the broadcast traffic on ethernet interface:
R2#debug ip packet detail 111
IP packet debugging is on (detailed) for access list 111
R2#
*Nov 18 19:53:21.187: IP: s=150.2.4.254 (FastEthernet0/0),
d=255.255.255.255, len 44, rcvd 2
*Nov 18 19:53:21.187: UDP src=56958, dst=3434
*Nov 18 19:53:22.187: IP: s=150.2.4.254 (FastEthernet0/0),
d=255.255.255.255, len 44, rcvd 2
*Nov 18 19:53:22.187: UDP src=49314, dst=3434
*Nov 18 19:53:23.187: IP: s=150.2.4.254 (FastEthernet0/0),
d=255.255.255.255, len 44, rcvd 2
*Nov 18 19:53:23.187: UDP src=50778, dst=3434
*Nov 18 19:53:24.187: IP: s=150.2.4.254 (FastEthernet0/0),
d=255.255.255.255, len 44, rcvd 2
*Nov 18 19:53:24.187: UDP src=57531, dst=3434
But When I try to see the multicast packets:
R2#debug ip mp
R2#debug ip mpacket
IP multicast packets debugging is on
R2#
R2#
R2#
Nothing happens at all...
R3:
R3#debug ip packet detail 111
IP packet debugging is on (detailed) for access list 111
R3#
Nothing happens too...
----------------------------------------------------------------------------
-----
Anybody has any idea about what is wrong? Brian, could you help me?
I read everything that I found about this, but i really don't know what is
wrong...:
- Developing IP Multicast Networks - Chapter 16 - "Broadcast-Multicast
Traffic Conversion"
- IEWB - LAB 8 - Version 4
- "ip multicast helper-map" command:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/himc_r
/mlt_i1h.htm#wp1134745
Thanks for any help,
Zorby
This archive was generated by hypermail 2.1.4 : Sat Dec 01 2007 - 06:37:30 ART