Re: [nsp] 7206 config/IOS recommendation...

From: George Robbins (grr@shandakor.tharsis.com)
Date: Thu Jul 26 2001 - 19:10:53 EDT

I dunno, the whole complex is a bit fuzzy. The cited bug could refer
to packets being dropped instead of reverting to fast caching, the
feature in the feature navigator is about "between VLAN's", which isn't
neccessarilly the same as to/from VLAN's. 8-(

It's not really critical if the router can handle the CPU loading
associated with fast or flow cache for the traffic levels invovled.

Looking at switching statistic on a varity of 12.0S or 12.1{E/T}
routers would be informative, or a Cisco person could come up with
an overview of what/where/when. 8-)

                                                        George

> From mivens@clara.net Thu Jul 26 18:13:28 2001
> Date: Thu, 26 Jul 2001 23:13:25 +0100
> From: Mark Ivens <mivens@clara.net>
> To: George Robbins <grr@shandakor.tharsis.com>
> Cc: cisco-nsp@puck.nether.net, elh@outreachnetworks.com, karwas@ifxcorp.com
> Subject: Re: [nsp] 7206 config/IOS recommendation...
> References: <200107261918.PAA02777@shandakor.tharsis.com>
> Content-Disposition: inline
> User-Agent: Mutt/1.2.5i
> In-Reply-To: <200107261918.PAA02777@shandakor.tharsis.com>; from grr@shandakor.tharsis.com on Thu, Jul 26, 2001 at 03:18:28PM -0400
> X-NCC-RegID: uk.claranet
>
> Thus spake George Robbins (grr@shandakor.tharsis.com):
>
> > 12.0S does support dot1q, but only fast cached, CEF support doesn't
> > seem to kick in except in 12.1T and 12.2, this is only critical if
> > you're moving 50-100mbit/s traffic around
>
> Looking at Bug Navigator it is implied that CEF support for dot1q is
> fixed in 12.0(6)S
>
> CSCdp40810 entitled, "802.1Q traffic not forwarded by CEF":
>
> "A Cisco router that is running Cisco IOS Release 12.0 or Cisco IOS
> Release 12.0 T with the ip cef global configuration command enabled on
> an interface will not forward 802.1Q encapsulated traffic.
> Workaround: Upgrade to Cisco IOS Release 12.0(5.1)S because 802.1Q
> traffic switched by Cisco Express Forwarding (CEF) is supported by
> this release."
>
> --
> ----------------------------------------------------------------------
> Mark Ivens mivens@clara.net "I asked for a car,I got a computer.
> Systems Administrator How's that for being born under a
> ClaraNET Ltd bad sign?" - Ferris Bueller
> ----------------------------------------------------------------------
>

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Greetings,

A search in Cisco homepage shows that only GSR supports traffic õÅ;ic
version/when? S- or ST-train?

Besides traffic policing õÅ;e
switched PVCs on a 7200? (not those terminated on that router)

Thanks very muc õÅ;Ch

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Date: Thu, 26 Jul 2001 19:12:46 +0200
From: Gert Doering <gert@greenie.muc.de>
To: "Mark E. Mallett" <mem@mv. õÅ;om
Subject: Re: [nsp] T1s stop working after IOS upgrade...
Message-ID: <20010726191246.D5720 õÅ;en
References: <20010725042637.A23718@iridium.mv.net>
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Hi,

On Wed, Jul 25, 2001 at 04:26:37AM - õÅ;,
> interface Serial4/0
> ip address x.x.x.x 255.255.255.252
> encapsulation ppp
>
> (both ports a õÅ;on

If you have multiple interfaces with the *very same IP*, "
wi
pattern what wo
IPs or "ip unnumbered" for my serials.

> T1s in parallel using per-dest
> còëÅ;e
> port and concentrated on getting just one of them up.)

I õÅ;d*
- maybe a leftover?

gert 

-- 
Gert Doering
Mobile commun õÅ;io... mobile phone: +49 177 2160221 ... or mail me:  gert@greenie.muc.de

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Subject: [nsp] How many OC3s on a 7507

Can anyone tell me what t õÅ; eam trying to narrow down a strange performance problem.  I am trying to
elimòëÅ;e in the buffers.  The config is straight forward: 1 GigE, õÅ;A-PA-T3-2 (only one DS3 running on it), 1 FE.

Any insights or pointing in the right direction to check next would õÅ;ap
K

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