From: Hugo Viana (zorby@doglover.com)
Date: Sun Nov 18 2007 - 23:13:23 ART
R2
!
interface FastEthernet0/0
ip address 150.2.4.1 255.255.255.0
ip directed-broadcast
ip multicast helper-map broadcast 224.2.2.2 111 ttl 16
!
R2#debug ip packet detail 111
IP packet debugging is on (detailed) for access list 111
R2#
*Nov 19 02:47:01.611: IP: s=150.2.4.254 (FastEthernet0/0),
d=255.255.255.255, len 44, rcvd 2
*Nov 19 02:47:01.611: UDP src=51207, dst=3434
*Nov 19 02:47:02.611: IP: s=150.2.4.254 (FastEthernet0/0),
d=255.255.255.255, len 44, rcvd 2
*Nov 19 02:47:02.611: UDP src=57194, dst=3434
On R3:
R3#
R3#debug ip mpacket detail
IP multicast packets debugging is on (detailed)
R3#ter mon
% Console already monitors
R3#
Nothing happens...
Thanks!
----- Original Message -----
From: "Joseph Brunner"
To: "'Hugo Viana'" , ccielab@groupstudy.com
Subject: RE: Multicast helper-map - What is wrong with it?
Date: Sun, 18 Nov 2007 21:04:27 -0500
Go ahead and give me a ttl remap on R2s multicast helper-map command
(facing the broadcast)
So ttl 16
At the end of the map
Then lets do a #debug ip mpacket detail on R3
-Joe
--------------------------------------------------------------------
From: Hugo Viana [mailto:zorby@doglover.com]
Sent: Sunday, November 18, 2007 8:59 PM
To: Joseph Brunner; ccielab@groupstudy.com
Subject: RE: Multicast helper-map - What is wrong with it?
R2#sh ip mroute
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, z - MDT-data group sender,
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
(*, 224.0.1.40), 01:05:15/stopped, RP 4.4.24.2, flags: SJPCL
Incoming interface: Serial0/1/0.1, RPF nbr 4.4.24.2
Outgoing interface list: Null
R3#sh ip mroute
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, z - MDT-data group sender,
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
(*, 224.6.6.6), 07:08:26/00:03:25, RP 4.4.24.2, flags: SJC
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
FastEthernet0/0, Forward/Sparse-Dense, 07:08:09/00:03:25
(*, 224.2.2.2), 00:05:40/00:02:53, RP 4.4.24.2, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/1/0.1, Forward/Sparse, 00:04:53/00:00:00
FastEthernet0/0, Forward/Sparse-Dense, 00:05:41/00:02:45
(*, 224.0.1.40), 07:08:37/00:02:51, RP 4.4.24.2, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Serial0/1/0.1, Forward/Sparse, 01:05:11/00:02:53
FastEthernet0/0, Forward/Sparse-Dense, 07:08:37/00:02:43
R3#sh run int fa0/0
Building configuration...
Current configuration : 240 bytes
!
interface FastEthernet0/0
ip address 4.4.26.2 255.255.255.0
ip broadcast-address 4.4.26.255
ip directed-broadcast
ip pim sparse-dense-mode
ip igmp join-group 224.2.2.2
!
----- Original Message -----
From: "Joseph Brunner"
To: zorby@doglover.com, ccielab@groupstudy.com
Subject: RE: Multicast helper-map - What is wrong with it?
Date: Sun, 18 Nov 2007 20:39:16 -0500
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
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