RE: Cisco 3845 question

Here's the latest one, http://www.cisco.com/web/partners/downloads/765/tools/quickreference/routerperformance.pdf

I've heard both sides of the spectrum, if you don't have a very complex setup and you're passing large sized packets, you can see numbers that are higher. However, another good rule of thumb I've seen is take that number and divide it in half. For any software based router, it's a wise decision to test in a simulated environment first.

-ryan

> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On
> Behalf Of ron wilkerson
> Sent: Friday, August 13, 2010 11:07 PM
> To: Roman Rodichev
> Cc: Grammer, Christopher; ccielab_at_groupstudy.com
> Subject: Re: Cisco 3845 question
>
> that old/famous pdf?
> yikes...definitely wouldn't base my hardware selection based on those
> numbers.
>
> but everyone's milage varies
> On Fri, Aug 13, 2010 at 10:24 PM, Roman Rodichev
> <romangs_at_iementor.com>wrote:
>
> > 3845 should support 256Mbps of throughput
> >
> > http://www.iementor.com/Cisco_routing_performance.pdf
> >
> >
> >
> >
> > Roman Rodichev
> > 6xCCIE #7927 (R&S, Security, Voice, Storage, Service Provider,
> > Wireless) Instructor, Content Developer, CEO ieMentor Corporation
> > http://www.iementor.com
> > Y!M: roman7927
> >
> > On Aug 13, 2010, at 9:19 PM, ron wilkerson wrote:
> >
> > > i think you're misreading the info.
> > > it states that the 3845 will support full rate ds-3 with services
> > > and
> > that
> > > it supports a maximum of 2 ds-3's. they are two different things.
> > > basically, it is not stating that it will support 90mb at line rate
> > > with services. will it support 2 ds-3's, yes. does it support 1
> > > ds-3 at line rate with services, yes. but it won't support 90mb with
> services.
> > >
> > > i'd never put more than a ds-3 wtih vpn, qos, etc. on a 3845..
> > >
> > > ron
> > >
> > > On Fri, Aug 13, 2010 at 8:28 PM, Grammer, Christopher <
> > > cgrammer_at_essilorusa.com> wrote:
> > >
> > >> Here is the doc I was referring to:
> > >>
> > >>
> >
> http://www.cisco.com/en/US/prod/collateral/modules/ps2797/ps4909/prod
> u
> > ct_data_sheet09186a008010fba2.html
> > >>
> > >>
> > >> It states that the 3845 can support 2 DS3s at full line rate with
> > >> concurrent services.
> > >>
> > >> Chris
> > >>
> > >>
> > >>
> > >> On Fri, Aug 13, 2010 at 6:52 PM, Kambiz Agahian
> > >> <aussiecert_at_gmail.com
> > >>> wrote:
> > >>
> > >>> Jeff,
> > >>>
> > >>> This configuration if you don't have any "dodgy" stuff like
> > >>> process switching operations or buggy functions should not hit
> > >>> 90%. Go over
> > your
> > >>> config and list of your processes and if no suspicious thing is
> > >>> seen
> > open
> > >> a
> > >>> case with TAC. Bear in mind, high CPU utilization is "one" of the
> > >>> major symptoms of potential bugs. There are some nice articles on
> > >>> cisco.comon this.
> > >>>
> > >>> In regards to the upgrade plan, since at this stage we have no
> > >>> idea
> > about
> > >>> the nature of the traffic and possible unforeseen issues, I'd
> > >>> consider
> > a
> > >>> maintenance window and a neat proof of concept pod (if you don't
> > >>> have
> > to
> > >>> don't include all your sites if you have hub/spoke); make sure you
> > >>> have
> > a
> > >>> well defined roll back plan and if we're talking about a mission
> > critical
> > >>> network you might wish to get TAC involved.
> > >>>
> > >>> Anyway, I'd use all the services that I pay for :) just to make
> > >>> 100%
> > the
> > >>> best service is delivered to my customers.
> > >>>
> > >>> Kambiz Agahian
> > >>>
> > >>> CCIE Instructor/Consultant
> > >>> M.Eng Telecom, CCIE# 25341, CCSI# 33326, MCSE, MCSA
> > >>>
> > >>>
> > >>>
> > >>> On Fri, Aug 13, 2010 at 3:12 PM, Biggs, Jeff (M/CIO/BIE)
> > >>> <JBiggs_at_usaid.gov>wrote:
> > >>>
> > >>>> Anyone seeing any issues with a 3845 chassis running two DS-3
> modules?
> > >>>>
> > >>>> We have one of the DS-3's occasionally hit 40mb and causes the
> > >>>> CPU on
> > >> the
> > >>>> router to hit 90% plus.
> > >>>>
> > >>>> Running 12.4(23) AdvEnterprise with 768Mb of memory.
> > >>>>
> > >>>> Cisco 3845 (revision 1.0) with 745472K/40960K bytes of memory.
> > >>>> 4 FastEthernet interfaces
> > >>>> 2 Gigabit Ethernet interfaces
> > >>>> 2 Serial interfaces
> > >>>> 1 Virtual Private Network (VPN) Module
> > >>>> 2 Subrate T3/E3 ports
> > >>>> DRAM configuration is 64 bits wide with parity enabled.
> > >>>> 479K bytes of NVRAM.
> > >>>> 255488K bytes of ATA System CompactFlash (Read/Write)
> > >>>>
> > >>>> Running NETFLOW (v5) and some LLQ, but that should not drive this
> > >>>> box
> > >>> into
> > >>>> meltdown.
> > >>>> Any thoughts?
> > >>>>
> > >>>> Jeffrey Biggs
> > >>>> CCIE #21127 (R&S)
> > >>>>
> > >>>>
> > >>>> Blogs and organic groups at http://www.ccie.net
> > >>>>
> > >>>>
> >
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Received on Sat Aug 14 2010 - 03:16:20 ART