Re: Cisco 3845 question

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/product_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.com on
>>> 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)
>>>>
>>>>
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>
>
> --
> stop talking
>
>
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Received on Fri Aug 13 2010 - 21:24:22 ART