Switching

Hi everyone,

1)Usually MSDP peers are used to connect separate IP PIM sparse regions/domains. In Cisco we can overrwrite that behavior:

(10.10.10.10-SRC---R1--PIM DENSE--R2)--SPARSE-MODE---(R3----Sparse--R4-Listener-235.1.1.1)

                                                                     <-------MSDP--------->

Above we have two regions connected by MSDP. R2 is connected to SParse and dense region, and has loopback 0 :1.1.1.1 as RP. Similarly R3 uses Lo: 3.3.3.3 as RP.  Both uses Lo for MSDP peerng.

By default If R2 sees multicast stream say (10.10.10.10. 235.1.1.1) from SRC, it will discards it because it is received over Dense region. We can overwrite that by using:

R2 ( config) ip msdp roiginator-id loopback 0.

R2 can now sends SA ( 10.10.10.10,235.1.1.1) with RP 1.1.1.1  over TCP to R3

My question can we do the same thing with EX 4300  what R2 is doing?

Thanks and have a nice weekend!!

Hello,

MSDP is not supported on EX4300

https://www.juniper.net/documentation/en_US/junos/topics/concept/multicast-msdp-overview.html

Supported Platforms

• EX4600
• M Series
• MX Series
• OCX1100
• QFX Series
• QFabric System
• SRX Series
• T Series

But if You swap EX4300 for a JNPR product that supports MSDP, then I believe You can work it around with PIM "accept-remote-source" command 

https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/accept-remote-source-edit-protocols-pim.html

HTH

Thx

Alex