A Vip2-50 has an RSP4 on it, a VIP2-40 has an RSP2 on it.
In a VIP installation, the RSP4 on the CPU module only does BGP updates
and any legacy CX style cards.
You usually need a VIP2-50 for a PA that needs lots of CPU, say the
channelized OC3/OC12 interface.
The VIP cards also do dCEF and which is very cool at reducing CPU
utilization on your main CPU.
Each VIP should have at least 128MB of RAM if you want to run dCEF and a
full BGP view. (IMO, 64MB is probably the real minimum).
Deepak Jain
AiNET
On Tue, 7 Sep 1999, Simon Lockhart wrote:
> Hi,
>
> I'm just trying to spec up a couple of routers, and given the lack of
> information about proposed gigabit ethernet ports for the 720xVXR routers
> (we don't need full speed, just more than 100Mbit!), it looks like we're
> going to have to go with 7500's.
>
> What I can't get my head around is the difference in performance between
> the RSP2 and RSP4, and again between the VIP2-40 and the VIP2-50.
>
> I understand that for some PA- cards, you need a particular VIP2, and I've
> read the specs for all the cards, but nothing seems to give performance
> details for these cards.
>
> Can anyone help?
>
> Thanks,
>
> Simon
>
>
> --
> Simon Lockhart | Tel: 01737 839676
> Senior R&D Engineer, Online | Fax: 01737 839665
> BBC Research & Development | Email: Simon.Lockhart@rd.bbc.co.uk
> Kingswood Warren, Tadworth, Surrey. | URL: http://www.bbc.co.uk/rd/
>
>
>
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