[AusNOG] 7301 Broadband Aggregation?

[McDonald Richards]

Unfortunately I lacked the time machine necessary to go forward 5 years or I
would have brought back more than an ASR1K :)

Macca


From:  Matthew Moyle-Croft <mmc at mmc.com.au>
Date:  Tue, 27 Mar 2012 16:16:32 +1030
To:  McDonald Richards <macca at vocus.com.au>
Cc:  "ausnog at lists.ausnog.net" <ausnog at lists.ausnog.net>
Subject:  Re: [AusNOG] 7301 Broadband Aggregation?


On 27/03/2012, at 4:11 PM, McDonald Richards wrote:

> We are going back a long time here, but in my experience the only ports worth
> using for ethernet on the G1 and G2 were the ones built onto the NPE
> themselves..It may have just come down to those being the only ones that
> support SFPs but I seem to recall something to do with the actual PCI bus
> being a lot slower than the interface used on the NPE to those ports.

Given the actual throughput of the 72/73 series for broadband aggregation
I'd suggest that if you're starting to optimise or worry about this aspect
then you may need to actually be considering a faster platform.

eg. ASR1k etc - especially if doing dual stack (IOS XE has better code for
IPv6 now).

MMC


> 
> Macca
> 
> 
> From:  Skeeve Stevens <skeeve+ausnog at eintellego.net>
> Date:  Tue, 27 Mar 2012 16:36:08 +1100
> To:  Graeme Allen <gallen at mytelecom.com.au>
> Cc:  "ausnog at lists.ausnog.net" <ausnog at lists.ausnog.net>
> Subject:  Re: [AusNOG] 7301 Broadband Aggregation?
> 
> According to: 
> http://www.cisco.com/en/US/docs/routers/7200/configuration/7200_port_adapter_c
> onfig_guidelines/3875In.html
> 
> "Do not calculate bandwidth points for an I/O controller if it is installed in
> the Cisco 7200 VXR router with an NPE-G1 or NPE-G2. With the NPE-G1 or NPE-G2,
> I/O controllers do not use bandwidth or bandwidth points."
> 
> Look at Table 1-2
> 
> ...Skeeve
> 
> Skeeve Stevens, CEO
> eintellego Pty Ltd
> skeeve at eintellego.net ; www.eintellego.net <http://www.eintellego.net/>
> Phone: 1300 753 383 ; Fax: (+612) 8572 9954
> Cell +61 (0)414 753 383 ; skype://skeeve
> facebook.com/eintellego <http://facebook.com/eintellego>
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> www.linkedin.com/in/skeeve <http://www.linkedin.com/in/skeeve>
> PO Box 7726, Baulkham Hills, NSW 1755 Australia
> 
> The Experts Who The Experts Call
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> 
> 
> 
> On Tue, Mar 27, 2012 at 16:18, Graeme Allen <gallen at mytelecom.com.au> wrote:
>> The C7200-I/O-GE+E does burn the bandwidth points, so with that in, you can
>> only have 1 more "high speed" card on the other bus....
>> 
>> 
>> On 27/03/12 16:07, shthead wrote:
>>> On 27/03/2012 1:00 PM, McDonald Richards wrote:
>>>> Just remember to try and use the GE ports on the NPE module instead
>>>> of the ones on the PCI bus if you care about performance.
>>> On that note you can use the C7200-I/O-GE+E to get an extra gig port
>>> without using and B/W points on the PCI bus (its compatible with the
>>> G1, I'm not sure about the G2, but I can't see anything saying its
>>> not). It may work out cheaper than buying a PA-GE card as well.
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