From: Jongsoo.Kim@Intelsat.com
Date: Thu Mar 10 2005 - 15:34:45 GMT-3
Simon Thanks and one more question.
Per sundarp's requirement, multicast is not enabled on R3.
I assume we can only use ip multicast helper-map broadcast on
multicast-enabled router.
Without "ip multicast helper-map broadcast" command on R3,hosts on R3's e0
should be able to receive packet as broadcast not multicast?
Jongsoo
-----Original Message-----
From: simon hart [mailto:simon.hart@btinternet.com]
Sent: Thursday, 10 March, 2005 1:29 PM
To: Kim, Jongsoo; sundarp@gmail.com; ccielab@groupstudy.com
Subject: RE: Multicast helper-map Scenario
Kim,
Yes it would. The config from Sundarp does not explicitly state what udp
port number the application is using, so the only option is to use the ip
forward-protocol udp.
If the port was known, then the port number could be added to the end of the
arguement.
With respect to the overall configuration I think there is some redundant
configuration, for example R1 does not need the ip igmp join statement.
Also on R3 you probably need to add ip multicast helper-map broadcast
230.30.30.30 acl
As this is what the hosts would be expecting (depending on their application
of course). If the line is added to R3, then R3 would also need the ip
forward-protocol udp statement
Simon
-----Original Message-----
From: Jongsoo.Kim@Intelsat.com [mailto:Jongsoo.Kim@Intelsat.com]
Sent: 10 March 2005 18:23
To: simon.hart@btinternet.com; sundarp@gmail.com; ccielab@groupstudy.com
Subject: RE: Multicast helper-map Scenario
Simon
If you configure "ip forward-protocol udp", will this command allow to
forward all UDP ports?
-----Original Message-----
From: simon hart [mailto:simon.hart@btinternet.com]
Sent: Thursday, 10 March, 2005 12:57 PM
To: Kim, Jongsoo; sundarp@gmail.com; ccielab@groupstudy.com
Subject: RE: Multicast helper-map Scenario
To configure ip forward-protocol for udp, just add the udp argument to the
end of the statement.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jongsoo.Kim@Intelsat.com
Sent: 10 March 2005 15:44
To: sundarp@gmail.com; ccielab@groupstudy.com
Subject: RE: Multicast helper-map Scenario
I think you need to configure " Ip forward-protocol " on R1
But in your question, there isn't specific udp port so that I don't how to
configure "Ip forward-protocol "
-----Original Message-----
From: Sundar Palaniappan [mailto:sundarp@gmail.com]
Sent: Thursday, 10 March, 2005 9:28 AM
To: ccielab@groupstudy.com
Subject: Multicast helper-map Scenario
Multicast server is connected to e0 on R1 and sending multicast stream
for group 230.30.30.30. There are users connected to e0 on R3 who need
to receive this traffic. Will the below config forward the traffic to
e0 on R3.
I can only enable multicasting on R1. I am using sparse-mode on e0 of
R1 because there was a previous requirement where I had to configure
pim sparse-mode.
Topology:
e0 R1 s0 -- s0 R2 s1 -- s0 R3 e0
R1:
ip multicast-routing
int e0
ip pim sparse-mode
ip igmp join-group 230.30.30.30
ip directed-broadcast
ip multicast helper-map 230.30.30.30 192.168.3.255 120
access-list 120 permit udp any any
int s0
ip directed-broadcast
R2:
int s0
ip directed-broadcast
int s1
ip directed-broadcast
R3:
int s0
ip diected-broadcast
int e0
ip add 192.168.3.1 255.255.255.0
ip directed-broadcast
TIA,
Sundar Palaniappan
This archive was generated by hypermail 2.1.4 : Sun Apr 03 2005 - 17:56:44 GMT-3