[c-nsp] 2821 for BGP?

[nealr]

    The processor and ram requirements have been addressed by others - 
should be fine on a 28xx.

    I would be worried about HSRP being in this mix - if you have 
traffic exiting via R1 and the return path is R2 you may see ICMP and 
UDP function but TCP fail due to the asymmetry - FreeBSD will pitch a 
fit if it sees traffic returning from a different MAC/IP than it used 
for a gateway and Windows boxes just silently fail. Yes, ICMP redirect 
yadda yadda yadda ... but if there is any trouble the person working the 
host side is very likely to not be able to sort this stuff out on their 
own. I treat configurations like this as a serious design error and do 
whatever is required to correct the problem ...


   If you've got some deal with the upstream provider for two links and 
just default routes over BGP then this could be made to work, but it has 
to be a strict ordering of resources -R1 and link1 are primary unless 
they die, in which case T2/link2 becomes responsible.




miguel wrote:
> Hi all...
>
>     I know that the 38xx is the default router recommended for BGP 
> applications. However, I was wondering if any of you have been working 
> with the 2821 (or 2811) with BGP. I'm worry about CPU usage.
> So this is the general config.
>
> link1                            link2
> |                                        |
> |                                        |  
> R1 ----(HSRP)-----------R2
> |                                        |
> -------------LAN---------
>
>
> Each router will have a BGP default route to link 1, and an alternative 
> route to link 2.
> The maximum throughput will be 5-6Mbps
>
> Now, has anybody work with something like this (or similar) with this 
> type of routers?
>
> PS: I'm not worry about memory, cos' I can upgrade it to 512.
>
>
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