From: Brian Dennis (brian@5g.net)
Date: Fri Oct 25 2002 - 09:49:26 GMT-3
I couldn't find the exact release fast switching was supported but this
newsgroup posting (see below) about a bug with ACL's and fast switching
from the manager of customer engineering at cisco (1990) might help.
Notice the date and the IOS version ;-)
Brian Dennis, CCIE #2210 (R&S/ISP Dial)
<posting>
From: Joel P. Bion (jpbion@cisco.com)
Subject: Bug in IP Fast switching/access lists...
Newsgroups: comp.dcom.sys.cisco
Date: 1990-10-19 16:59:38 PST
Hello.
cisco Systems has recently uncovered a bug in the use of IP
access
lists and IP fast switching with the 8.1(19)-8.1(21) releases. This
problem
has been fixed in 8.2 development code, and will also be included in the
next GS maintenance release, currently scheduled for November 12th.
The conditions under which the problem is seen are complex,
but the result is that access would (to the end user) apparently be
"randomly" granted or denied. Your safest insurance is to simply
DISABLE fast switching on all interfaces to which an IP access list
is applied. For example, to disable fast switching on interface ethernet
0,
issue the following configuration commands:
interface ethernet 0
no ip route-cache
A mailing will be sent to this list indicating when the next 8.1
maintenance is available to fix this problem.
Thank you,
Joel Bion
Manager, cisco Customer Engineering
</posting>
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
MADMAN
Sent: Thursday, October 24, 2002 11:05 AM
To: Volkov, Dmitry (Toronto - BCE)
Cc: 'dmadlan@qwest.com'; 'ccielab@groupstudy.com'
Subject: Re: access-list switching
I did a quick unsuccessful search so no I don't have a link but I know
years ago access-lists were fast switched. Most new featues like NAT or
policy routing start out process switched and then are upgraded to fast
switching which both NAT and policy routing are also.
Dave
"Volkov, Dmitry (Toronto - BCE)" wrote:
>
> David,
>
> Do You know any link confirming fast switching of access-lists.
>
> Dmitry Volkov
> CCIE # 10292
>
> > -----Original Message-----
> > From: MADMAN [mailto:dave@interprise.com]
> > Sent: Thursday, October 24, 2002 12:03 PM
> > To: Volkov, Dmitry (Toronto - BCE)
> > Cc: 'ccielab@groupstudy.com'
> > Subject: Re: access-list switching
> >
> >
> >
> > access-lists have been at least fast switched for quite
> > some time but
> > your right that differant platforms perform differantly. I
> > would think
> > there would be a table somewhere that shows this but I don't
> > know where
> > it is!!
> >
> > Dave
> >
> > "Volkov, Dmitry (Toronto - BCE)" wrote:
> > >
> > > Hello group,
> > >
> > > Does somebody know where can I find how packets passing
> > access-list are
> > > switched ?
> > > As far as I understand they are process switched usually
> > > However, I remember, I read somewhere that they are CEF
> > switched on some
> > > platforms...
> > > I guess this depends on platform and IOS.
> > >
> > > Couldn't find it at CCO.
> > >
> > > Thank You,
> > >
> > > Dmitry
> >
> > --
> > David Madland
> > CCIE# 2016
> > Sr. Network Engineer
> > Qwest Communications
> > 612-664-3367
> >
> > "You don't make the poor richer by making the rich poorer."
--Winston
> > Churchill
-- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367"You don't make the poor richer by making the rich poorer." --Winston Churchill
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