Subject: RP hashing

From: "Rajendran G." <[email-masked]>
Date: Fri, 31 Mar 2000 17:57:50 -0800 (PST)

Hi All,

I am trying to set up a multiast test bed for my
research. I am using Gated routers and a cisco 3600
(with 12.0 s/w) in the setup. For RP hashing, I get
different results with Gated and Cisco. 

In a simple case.
Group: 239.255.0.0/16
C-RPs: 130.1.1.12, 132.1.1.14 (both with priority 0)
Hash Mask len: 30 bits

For a group 239.255.1.1:
Gated always elects 130.1.1.14 and
Cisco elects 132.1.1.12.

I tried to compute the hash value by hand and it seems

Gated picks the right one (as 130.1.1.12's hash value
is less than 132.1.1.14's for this G 239.255.1.1).

Does anyone know such problem with Gated or Cisco.

Thanks for your inputs.
Raj

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