[c-nsp] Multihoming with 2801

Seth Mattinen sethm at rollernet.us
Mon Nov 26 11:51:38 EST 2007


Pablo Almido wrote:
> Hi All, I am planning to configure Multihoming for my network in my
> job, I have a class C  /24 to announce, we have recently getting our
> own ASN, currently we have 1 router 2801,  I want to take only a
> default route from each provider, and announnce my network to each
> ISP, I have read in another posts that I have as minimal 256 DRAM,
> but I want to know If is possible my router can work well with 128
> DRAM only taking default routes.
> If I had to buy more memory  (it is expensive for me)   where I can
> find third party memory as kingston or other well-known manufacturers?
> Can Anyone give me some links.
> For peering with my other ISP can I buy a router 1841 with 128 or more
> DRAM memory or I should purchase other router 2801.  We have both
> circuits with 4MB for internet access.


128 is fine for default routes. If you want to get a little fancy but 
not go full routes, your upstreams may have the option to send you only 
customer routes with a default route. (Even a partial feed may require 
some trimming with 128 - not sure, never tried it with less than 256).

~Seth


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