clearing cef stats on an interace [7:55555]

2002-10-14 Thread W. Kevin Hunt

Any body know how to clear cef stats on an interface?
I need to be able to clear the counters showed by the command
sho int serial4/2 stats

We've got an interface that seems to be process switching 80% of it's
traffic and we're trying to nail down why.

K. Hunt




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Looking for experiences with 7500 and POSIP [7:54486]

2002-09-29 Thread W. Kevin Hunt

We are adding an OC3 to our network due to a recent contract w/ a large web
hosting company.  We are looking at using the POSIP card.  The contract
requires that they have the ability to saturate the OC3 w/o dropping any
packets.  I am worried that my 7500 w/ a vip2-40 will start dropping packets
under heavy load, there are 3 other DS3 interfaces on the router that are at
about 60% utilization.  Has anyone here had any experience w/ this
combination that can give me some pointers.  I'm trying to not have to buy
this card just to move to a 12000 in a month because it's dropping packets.




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Re: blocking spam with cisco routers [7:48971]

2002-07-17 Thread W. Kevin Hunt

I wouldn't even think of using a router for this purpose unless you are only
using smtp mail between your own sites and don't want outside email f/
anywhere.
We run spamassasin (www.spamassasin.org) on our mail server and it cuts out
80-90% of our SPAM.

Kevin Hunt
CCNP, MCSE, MCT, Linux+ SME

- Original Message -
From: "Marty Adkins" 
To: 
Sent: Wednesday, July 17, 2002 8:01 AM
Subject: Re: blocking spam with cisco routers [7:48971]


> GEORGE wrote:
> >
> > Hi all I have a question ,I configured my e-mail server to only accept
> > local e-mail, and deny other relay , however im still vulnerable to
> > spam. My question is how do the ips block other e-mail going to their
> > smtp
> > Do they do it by access-list? Allowing only the local network with port
> > 25?
> > Or just the e-mail server?
> > If cisco routers have to be involved does anyone have some links. Im
> > behind a pix and would like to allow only my network to use smtp.
>
> Network layer filtering can't really do much to prevent relaying; it
> has to be done in the SMTP application.  The techniques that I'm
> familiar with include:
> 1) Disallow mail sent to non-local (different domain) addresses unless
>the SMTP source is within the local domain, as resolved in a reverse
DNS.
>This is simple but prevents one from sourcing mail while traveling,
>using a different ISP, at work, etc.
> 2) Same as #1 but require U/P authentication for outgoing mail.
> 3) Same as #1 but indirectly authenticate by correlating an outgoing
>mail connection with a "recent" successful POP3 fetch, which naturally
>requires a U/P.  My DSL ISP, Speakeasy, does this and it works quite
>well.  If you attempt outbound mail without having done a POP fetch
>in the last several minutes, an error message tells you that you must
>do that first.
>
> And BTW, none of these reduce spam, only the relaying of it!
>
>   Marty Adkins Email: [EMAIL PROTECTED]
>   Chesapeake NetCraftsmen, LLC o:410.757.3050,
> p:[EMAIL PROTECTED]
>   1290 Bay Dale Drive, Suite 312   http://www.netcraftsmen.NET
>   Arnold, MD  21012-2325   Cisco CCIE #1289




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2 T1's to our provider [7:49039]

2002-07-17 Thread W. Kevin Hunt

We are upgrading to 2 T1's to our provider, Fractional DS3 is prohibitively
expensive in our rural area.
Has anyone done any speed comparisons on using round robin style static
routes
(i.e. 2 default routes w/ same cost) versus EIGRP's load balanceing versus
running MLPPP on the Serial interfaces?  We're currently using a 2621 but are
open to "bigger" routers.



Kevin Hunt
CCNP, MCSE, MCT, Linux+ SME




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Re: IGRP & OSPF mask issue [7:46187]

2002-06-12 Thread W. Kevin Hunt

I assume you mean eigrp not igrp, if you are using igrp, remember it's
classfull and takes the default mask, eigrp is classless...
you'll probably need to do some summarization also...
if I see the configs I can fix it in 2 seconds...

- Original Message -
From: "Sunil Rawoorkar" 
To: 
Sent: Monday, June 10, 2002 4:42 AM
Subject: IGRP & OSPF mask issue [7:46187]


> Hi ,
>
> Is anyone there to help me out on mask issue betwn OPSF and IGRP. I shud
not
> use static and default routes to carry routes from OSPF to IGRP. I hv
> several routes from OSPF with different mask, say /22, /21, /24, /30 . But
> my igrp interface is configured for /24 mask. so is there any other
solution
> for this , other than static and default.
>
>
>
> sunil




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