FW: your mail

Alex P. Rudnev alex at Relcom.EU.net
Mon Sep 27 11:15:57 UTC 1999

Folks, why all you are saying about the Gigabit traffic for the firewall?

Usially, firewall stand between intranet and internet, and it should 
proceed your upstream traffic, not more... And than, it's important to 
measure the throughput in packets/per_second, not in the gigabits...

Everything other is true - I suggess no one good firewall can proceed 
gigabit traffic at all, and only a few specially designed boxes can 
proceed 100Mbit traffic. But just again - it's a rare case when you does 
have 100Mbit upstream link.


On 25 Sep 1999, Robert E. Seastrom wrote:

> Date: 25 Sep 1999 21:26:59 -0400
> From: Robert E. Seastrom <rs at seastrom.com>
> To: "Alex \"Mr. Worf\" Yuriev" <alex at netaxs.com>
> Cc: "Rubens Kuhl Jr." <rkuhljr at uol.com.br>, nanog at merit.edu,
>     Stephen Sprunk <ssprunk at cisco.com>, rs at valhalla.seastrom.com
> Subject: Re: FW: your mail
> > > > I have listened to their seminar about this... As the simple L5 firewall
> > > > it's not bad, through it realise the fixed set of ruls and defends your
> > > > from the simple SMTP attacks only. But anyway, IOS FW is just what 90% of
> > > > the customers need...
> > > 
> > > How would IOS FW perform on Cisco 7x00-class equipment with 100M-to-Gigabit
> > > traffic ?
> > 
> > Umm... Very poorly.
> At the low end it's acceptable.  Gigabit traffic sucks on 7500 series
> routers even without any kind of filtering.
> The 7000-series routers, if they have an SSE, will do standard and
> extended access lists in the switch engine.  Now, given the
> limitations of CX-FEIP-2TX boards (the only faste boards that will
> work in a non-RSP 7000), you are lucky to get 70 mbit/sec through
> that.  If you have fddi, you can get most of the way to 100 mbit/sec
> one way (the CX-FIP cards, which are the only FDDIs that work in a
> 7000, won't do full-duplex).
> The 7500-series routers, you really want to get a VIP2-50 rather than
> a 2-40 or lower if you're going to be doing filtering on the linecard.
> You can load the fast ethernets up just fine there.
> 400 mbit/sec seems to be the upper limit of the currently shipping
> generation of gigE cards for the 7500 series.
> Hope this helps (and standing by for corrections from the #cisco IRC mafia...)
>                                         ---Rob

Aleksei Roudnev, Network Operations Center, Relcom, Moscow
(+7 095) 194-19-95 (Network Operations Center Hot Line),(+7 095) 230-41-41, N 13729 (pager)
(+7 095) 196-72-12 (Support), (+7 095) 194-33-28 (Fax)

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