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Fwd: Quick question


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  • From: Marshall Eubanks <>
  • To:
  • Cc:
  • Subject: Fwd: Quick question
  • Date: Tue, 25 Apr 2006 08:24:19 -0400

I am at the RIPE meeting, and will not be able to give this any attention until tomorrow, but WG
members should feel free to jump in.

Also, the USHMM is a I2 member, but Chandra is not yet on this list, and so make sure to cc him in
any replies.

Regards
Marshall


Begin forwarded message:

From:

Date: April 25, 2006 8:14:09 AM EDT
To: Marshall Eubanks
<>
Subject: Re: Quick question

I tried to describe the issue as best as I can - I certainly would
appreciate any help.
---------------------------------------------------------------------- ---------------

Chandra
U S Holocaust Memorial Museum

---------------------------------------------------------------------- --
The problem may be on my edge router. One of its Ethernet infaces on this
router connects to gigapop (MAX at UMd) and the other goes into a small LAN
subnet on my side - No firewall in between. Our RP is already setup, acc.
to MAX folks, at the gigapop and the interface on their router where my
link goes to is multicast enabled as well. I am not able to see any
multicast SAP (or should I, since I am not the RP). Also, I cannot see a
known multicast video stream from Ann Arbor, that is viewable from other
multicast-ebaled sites. Here is what I did on our edge router:

ENABLE MULTICAST ROUTING ON THE WAN ROUTER:
The first item should be a no-brainer (enabling multicast routing on the
WAN router):
ip multicast-routing

---------------------------------------------------------------------- ----------
SET UP MBGP:
On the next item (setting up MBGP), I expect we’ll probably stick with the
same IP addresses and ASN as are currently used in the regular BGP
statement, and modify that as recommended in the Abilene instructions to
be:
neighbor 206.196.177.221 remote-as 10886
address-family ipv4 unicast
neighbor 206.196.177.221 activate
neighbor 206.196.177.221 remote-as 10886
address-family ipv4 multicast
neighbor 206.196.177.221 activate

---------------------------------------------------------------------- -------------
CONFIGURE PIM: <<<<<< This is done on both Internet-2 interface and myside
LAN interface.
Then, we must enable PIM on each of the interfaces involved in the
multicast situation—the one connecting to the VBRICK VLAN and the interface
used to connect to the Internet 2 router.
ip pim sparse-mode

We will create this access list to block unwanted multicast streams:
ip access-list standard multicast-boundary
deny 224.0.1.39
deny 224.0.1.40
deny 239.0.0.0 0.255.255.255
permit any

That access list will then be applied to the interface connecting to the
Internet 2 router:
ip multicast boundary multicast-boundary

---------------------------------------------------------------------- ---------------
CONFIGURE MSDP
Finally, we enable MSDP to the Internet2 RP (206.196.177.247)

ip msdp peer 206.196.177.247
ip msdp sa-filter out 206.196.177.247 list 111

access-list 111 deny ip any host 224.0.1.2
access-list 111 deny ip any host 224.0.1.3
access-list 111 deny ip 10.0.0.0 0.255.255.255 any
access-list 111 deny ip 127.0.0.0 0.255.255.255 any
access-list 111 deny ip 172.16.0.0 0.15.255.255 any
access-list 111 deny ip 192.168.0.0 0.0.255.255 any
access-list 111 permit ip any any




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