need to announce ip block with bgp

[bigjerms]

What size and memory requirements of a cisco router do I need for two t1 mlppp announcing a class c block using bgp?


I have a cisco 3620 with 64 mb dram .

Do I need more memory. I'm told I need 128 mb dram from by a friend.

I don't think the 3620 can have that much memory though can it?

Would I have to get a 3640?

Or could I do it with a 2650 and 128 mb dram and 48 mb flash?

--Jeremy

 

[plshlpme]

will you be receiving the full bgp routing table (internet) ??

 

[BuckWeet]

If you're looking to get the full internet routing table you need a box with quite a bit of memory.. at least 256mb is the min recommended now.. Which would put you into a 3845 or 7200 series router..


BuckWeet

 

[mainstreetexpress]

Hi
As plshlpme and BuckWeet have noted, it all depends on whether you're going to be receiving a full Internet routing table. In my opinion 256M is not enough as I have had several issues with 256M in my 7200's, i.e. not enough memory-crash-reboot etc.

Since upgrading to 512M, no problem at all

However if you are simply announcing 1 BGP advert and only receiving a default route from your upstream, then any low spec router will do as far as memroy requirements go.

It then depends on your throughput, i.e. serial, FE/GE etc. You will need a beefier router if you want to pass a lot of traffic

Please be more specific about your requirements

 

[rainman]

Hello,

I also agree that if you plan on running BGP and receiving a full routing table, that you should install at least 512MB RAM. Here is an example why:


Router_C7206_NPE-G1#show proc mem | i BGP
232 0 267756364 98943332 84527308 204 204 BGP Router

We are running BGP on this router with full internet routing tables and it's occupying 268MB RAM out of the 512MB RAM installed in the 7200.

We have "other" routers that are 7200's with only 256MB RAM and I have seen them fail quite frequently due to BGP route memory consumption. 256MB RAM and BGP full routes may have been acceptable 2-3 years ago but the internet routing tables have grown dramatically (150-175k routes avg). If you plan on having that router stable for say the next 5-10 years I would honestly put in 512MB to 1GB RAM.

If you dont need full BGP routes you should consider doing just a default or partial routes (routes from your ISP's AS # + default) then you wouldn't need a large amount of memory.


-Rainman