Adam, One thing to consider is to reduce the BGP view. Do they really need the full view, or can actually take a partial view from each provider (for example each providers originated networks, and maybe their direct customers), and then use a default route for the rest of the Internet (the best alternative is to actually ask the providers to advertise a default route).
I most stub (as in non transit) ASs this should be a valid solution. Another alternative could be to introduce another set of border routers, such as 7201 routers. 7201 is a 7200/NPE-G2 in 1RU form factor with 4x1GE ports. It can easily take a full BGP view, but traffic sizing should be performed so that we can actually handle the load. Actually, I am not sure if the upgrade to Sup720-3BXL would be much more expansive than the 7201, but I suggest you explore these options with your customer. Arie -----Original Message----- From: Adam Korab [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 27, 2008 19:56 PM To: Arie Vayner (avayner) Cc: [email protected] Subject: Re: [c-nsp] 6506 unusual behavior On Wed, Aug 27, 2008 at 11:15 AM, Arie Vayner (avayner) <[EMAIL PROTECTED]> wrote: > Adam, Hi Arie, > I think you have a bit too many routes on this box... Probably...sup2 is kind of old. > Can you please share the outputs of: > > - show ip route summary edge1#sh ip ro sum IP routing table name is Default-IP-Routing-Table(0) Route Source Networks Subnets Overhead Memory (bytes) connected 0 5 400 800 static 0 2 224 320 ospf <removed> 0 123 8064 19680 Intra-area: 5 Inter-area: 0 External-1: 0 External-2: 118 NSSA External-1: 0 NSSA External-2: 0 bgp <removed> 130413 130722 16712640 41818320 External: 5090 Internal: 256045 Local: 0 internal 2642 3117560 Total 133055 130852 16721328 44956680 Removing Queue Size 0 > - show mls cef summary edge1#sh mls cef sum Total CEF switched packets: 0000000825744817 Total CEF switched bytes: 0000440372791097 Total routes: 261292 IP unicast routes: 261292 IPX routes: 0 IP multicast routes: 0 > - show mls cef maximum-routes edge1#sh mls cef maximum-routes ^ % Invalid input detected at '^' marker. So if that is indeed the case and this box has 261k routes while supporting 192k...what can be done to mitigate it? I don't believe the end customer has the budget to upgrade to sup720-3bxl. It's a pair of 6506s, each with an upstream provider; each box is taking full views and they iBGP peer with each other. Thanks! --Adam _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
