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perf #s for GRF vs 7500 Re: Anyone Deployed Ascend's GRF IP Switch?

  • From: joseph j. kim
  • Date: Tue Aug 26 23:48:31 1997

On Tue, 26 Aug 1997, Joe  Shaw wrote:

> 
> On Mon, 25 Aug 1997, joseph j. kim wrote:

> >From Cisco's:
> 
>  technology preview of Cisco's new family of gigabit switch routers (GSRs)
>  providing high performance solutions ranging from 5 to 60 Gb/s for
>  Internet and large-scale WAN Intranet backbone applications.
> 
> Now, I've got a GRF 400 with the ATM OC-3c card, the FDDI card, and the
> 10/100Base-T card.  It works flawlessly.  And I can't honestly see how the 
> 
> > Also, not that I know anything about the GRF but I think Cisco
> > claims that 7500 real-world performance is much better than the GRF400.
> 
> I've had cisco sales reps claim even more ludicrous things while the
> support engineer started turning red, so who knows...

hi,

Ok. since no one else bothered to post real numbers here are some:

Cisco numbers:
=============
				Cisco 7500		Ascend GRF

Performance			2 Gbps			4 Gbps
System Bandwidth		1.4 Mpps		2.8 Mpps
Theoretical 

Performance with 		65 - 85 Kpps 		35 - 70 Kpps
180 byte			(Bi-directional)	(Bi-directional)
packets

Line Card Forwarding 		325 Kpps		280 Kpps
Rate				(7507 w/ 5 VIP.s)	(Fully Loaded)
Real Performance		

Performance w/ Services		880 - 1000 Kpps		140 - 210 Kpps

Routing Table Size		250,000 +		150,000 +


The tolly/ascend report numbers:
===============================

looking at their data (n.t. = not tested):

# of modules	cisco 7514 w/rsp4	GRF1600		GRF400
---------------------------------------------------------------
1		122,300			60,388		59,731
2		244,520			120,848		119,348
3		366,516			n.t.		n.t.
4		368,575			241,516		236,776

6		367,774			360,000
8		367,302			483,016
16		n.t.			965,424



Using Random IP- in this test the routers were re-booted and the
performance measured at 15 minutes after boot time. also, destination IP
addresses were varied by randomly generating class c dest. addresses.

random ip test (at +15 min. after boot):
# of modules	cisco 7513 w/rsp4	GRF1600
------------------------------------------------
1		41,096			54,454
2		84,504			107,720
3		72,762			162,750
4		86,654			217,700
5		71,867			265,500


So, who's numbers should we believe or feel are more appropriate to real
world situations?

> Comparing GateD to IOS becomes more of a religious preference than
> anything else.  I'm content knowing both, truth be told.
> 
> > maybe someone can post some performance numbers.

-jjk








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