[AusNOG] Cisco upgrade 7206 to 7600

John Edwards john at netniche.com.au
Wed May 4 12:07:40 EST 2011


Hi Andrew,

The big difference for most ip routing migrations will be the change in behaviour of VLAN sub-interfaces.

On the 7200 a vlan is a subinterface per-interface but depending on your linecards vlans may be global interfaces on the 7600 platform.

This means at a minimum that you can't just get away with copy-and-pasting the existing config, at a maximum some exotic configurations won't work at all.

The other gotcha is that the 7200 is only limited by its memory for routes, whereas the 7600 will have a hardware limit for the number of forwarding entries. If you're planning on carrying full BGP tables you'll need to watch for this. It may also affect IPv6 as some older hardware will forward it via the supervisor processor.

John



On 04/05/2011, at 10:22 AM, Andrew Cox wrote:

> Hi Guys,
> 
> Investigating migrating out some Cisco 7206's and replace with 7600's at a few sites (and likely relocating everything in the rack to fit :-D)
> Wondering if anyone had recommendations / pitfalls / functionality gotchas, migrating between the 2 or alternatively any feedback on general performance of the 7600's in comparison?
> 
> Have a super mega nice day.
> 
> Kind Regards,
> Andrew Cox, MTCNA
> AccessPlus - Head Network Administrator 
> BigAir Universe Broadband - Senior Network Administrator
> Ph: 1300 739 822 (7am - 12 midnight AEST)
> 
> _______________________________________________
> AusNOG mailing list
> AusNOG at lists.ausnog.net
> http://lists.ausnog.net/mailman/listinfo/ausnog

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