Well, In my experience it depends on the model of router. I had a 3640 (granted, it's old) with 128MB that was just fine until a couple of months ago, now it's not enough. For one BGP table you will have to have at least 256MB in a 36xx router. Our 720xVXR routers currently have 256MB in them as well, but we've already ordered upgrades to 1GB with new NPE-G1s... - Erik _____ From: Mark Bojara [mailto:mark@aboutit.co.za] Sent: Monday, January 03, 2005 8:23 AM To: nanog@merit.edu Subject: minimum requirements for a full bgp feed Hello All, If I wish to purchase a Cisco router that handles a full internet BGP feed what are the minimum specs I should be looking at? Regards Mark Bojara
36xx or 72xx Old != bad . All you need is MEMORY = >= 256 Mb. ----- Original 36xx, 72xx Message ----- From: Erik Amundson To: Mark Bojara ; nanog@merit.edu Sent: Monday, January 03, 2005 6:27 AM Subject: RE: minimum requirements for a full bgp feed Well, In my experience it depends on the model of router. I had a 3640 (granted, it's old) with 128MB that was just fine until a couple of months ago, now it's not enough. For one BGP table you will have to have at least 256MB in a 36xx router. Our 720xVXR routers currently have 256MB in them as well, but we've already ordered upgrades to 1GB with new NPE-G1s... - Erik ------------------------------------------------------------------------------ From: Mark Bojara [mailto:mark@aboutit.co.za] Sent: Monday, January 03, 2005 8:23 AM To: nanog@merit.edu Subject: minimum requirements for a full bgp feed Hello All, If I wish to purchase a Cisco router that handles a full internet BGP feed what are the minimum specs I should be looking at? Regards Mark Bojara
"Erik Amundson" <Erik.Amundson@oati.net> writes:
In my experience it depends on the model of router. I had a 3640 (granted, it's old) with 128MB that was just fine until a couple of months ago, now it's not enough. For one BGP table you will have to have at least 256MB in a 36xx router. Our 720xVXR routers currently have 256MB in them as well, but we've already ordered upgrades to 1GB with new NPE-G1s...
It helps immensely to be running pre-ST-merge 12.0 code where possible (some situations in non-trivial networks can be positively affected by post-merge code, but you're not likely to find 36xx or 720xVXRs in central locations in such networks). You are not risking your "coolness points" to still be running 12.0(21)S8. :) ---Rob
256M should be considered a minimum. As far back as a year ago it was dicey to run BGP with 128M...you could load the table, but a BGP flap would cause MALLOCFAILs aplenty. If there's a router out there that can hold today's table in 128M, it won't stay that way for long. How may BGP peers are you planning on homing on this box? If you're looking at more than a handful, I'd even say that 256M may not be enough for long... -C On Jan 3, 2005, at 9:27 AM, Erik Amundson wrote:
Well, In my experience it depends on the model of router. I had a 3640 (granted, it's old) with 128MB that was just fine until a couple of months ago, now it's not enough. For one BGP table you will have to have at least 256MB in a 36xx router. Our 720xVXR routers currently have 256MB in them as well, but we've already ordered upgrades to 1GB with new NPE-G1s... - Erik
From: Mark Bojara [mailto:mark@aboutit.co.za] Sent: Monday, January 03, 2005 8:23 AM To: nanog@merit.edu Subject: minimum requirements for a full bgp feed
Hello All,
If I wish to purchase a Cisco router that handles a full internet BGP feed what are the minimum specs I should be looking at?
Regards Mark Bojara
participants (4)
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Alexei Roudnev -
Christopher Woodfield -
Erik Amundson -
Robert E.Seastrom