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New Member

Small packet size and full BGP table

Hi All,

I need some advice. I'm looking for a Cisco device to run a full BGP table with a 60Mb link. And one of the main restrictions is that my traffic is almost 100% real-time (voip). So the average packet size is small. Today we own a Cisco 7204 NPE400 with 512Mb RAM. I think even though I upgrade it to a G2, due to the small average packet size, the router will be near to its limit. What do you guys suggest as a cost effective option? Maybe a Cisco 7300 NSE-150? Or should I think about a switch? Which one could support this?

Thanks in advance


Everyone's tags (4)

Small packet size and full BGP table

We had an issue in the past that had a similar issue but the traffic was mainly VPN traffic but had 3500 sites connected to it.  We used the ASR line for this purpose.

New Member

Re: Small packet size and full BGP table

Hi Raph,

There are a few ways you can approach this, Get a router than can hande more PPS (Like Rick suggested). Or get another router and use a per flow load balancing selection, this is dependant on your setup of course.

So you may have to think about it on your current setup, per packet you can't do with Voip. But per flow / per session should be fine.

I just set up an MPLS network (Mostly SCCP / RTP traffic), one of the sites was getting hammered with traffic. I decided to go down this route and all is better now



Super Bronze

Re: Small packet size and full BGP table


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Nominally, the NPE-G2 offer fives times the performance of your NPE-400.  It should be able to easily deal with up to a 100 Mbps link.

The NSE-150 can offer more performance, but much depends on what's accelerated.  (I've used a NSE-100 side-by-side with a NPE-G1, the former did have lower average CPU utilization for the same load.)  I think the NSE-150 is End of Something.

If you looking to buy new, least expensive option would be a L3 switch, but you'll need to carefully check you're not giving up features important to you.

Depending on how much bandwidth you need to be able to grow into, the 39xxE might be a good choice.  Cisco recommends at 3925E for up to 250 Mbps and ad 3945E for up to 350 Mbps, and their recommendations are generally conservative.

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