[c-nsp] GRE performance

[Rodney Dunn]

I looked up some test data on this and here
is a summary of what I see.

A VIP2-50 can do about 40% of an OC3 for a no
drop rate for 64 byte packets with raw switching.

For dGRE over one tunnel the performance drops
about 23% to about 2 * 95 Kpps for 64 byte packets
and for 100 GRE tunnels it's about 2 * 67 Kpps.

A VIP4-80 for 64 byte packets running over 3
GRE tunnels is 2 * 146 Kpps for a no drop rate.

For 512 byte packets and greater a 4-80 can do
an OC3 at linerate for dGRE.

I don't see any test above that rate.  The
test were just done on an OC3 POS PA.


Rodney


On Wed, Sep 29, 2004 at 11:40:38PM +0800, Glenn Tan wrote:
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> 
> Hi
> 
> Thanks everyone for the help with the Ethernet/FE problem.
> 
> I have another question. If we run a point to point GRE tunnel between
> two Cisco 7507 RSP4s, each with at least two VIP2-50 cards, what kind
> of forwarding performance can we expect to get? No encryption or
> compression will be done for this. We can do dCEF GRE right?
> 
> We have come up with the idea that a Juniper M5/M10 with the Tunnel
> Services PIC is a good way to do this (~1Gbps per PIC?) but since we
> already have a network full of Cisco gear, why not make the best out
> of it.
> 
> Thanks!
> 
> Best Regards,
> 
> Glenn Tan
> Senior Network Manager
> Network Operations/Engineering
> ***********************************
> Intermedia Network Services Pte Ltd
> HP: +65 94371288
> Tel: +65 65470911
> Fax: +65 65470933
> http://www.intermedia.com.sg
> ***********************************
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