nanog mailing list archives
Re: options for full routing table in 1 year?
From: Jared Mauch <jared () puck nether net>
Date: Thu, 9 Apr 2009 11:30:39 -0400
On Apr 9, 2009, at 11:17 AM, Jo Rhett wrote:
On Apr 8, 2009, at 6:43 PM, Tim Durack wrote:Cisco 6500/7600 you replace SUP32 or SUP720 with SUP720-3BXL ...if I understand it, no other cards need replaced?(note that this disagrees with my understanding of how their FIB/CEFworks so I'm curious about this)If you have linecard DFCs they would need to be XLs also.The DFCs are what make hardware forwarding possible, yeah? Upgrading the DFC requires a line-card swap, or just a DFC daughter- card?
DFCs allow hardware forwarding on the linecard. (Otherwise it's a centralized lookup on the PFC.. if you do not exceed the PPS limits of the PFC, you may not need a DFC for your environment).
It's the same EARL as is on the PFC. The system will use the lowest rev PFC/DFC type and they must all be the same type major class. eg: PFC2 series vs PFC3 series.. and it will follow the 3C[-XL] -> 3B[-XL] -> 3A downrev path. If you have a sup720 w/ pfc3a the dfc-3bxl's will lower themselves to 3a capabilities.
btw, this discussion is likely best suited for cisco-nsp. - Jared
Current thread:
- options for full routing table in 1 year? Jo Rhett (Apr 08)
- Re: options for full routing table in 1 year? Tim Durack (Apr 08)
- Re: options for full routing table in 1 year? Jo Rhett (Apr 09)
- Re: options for full routing table in 1 year? Jared Mauch (Apr 09)
- Re: options for full routing table in 1 year? Stephane Tsacas (Apr 09)
- Re: options for full routing table in 1 year? Jo Rhett (Apr 09)
- Re: options for full routing table in 1 year? Robert Boyle (Apr 08)
- Re: options for full routing table in 1 year? Jon Lewis (Apr 08)
- Re: options for full routing table in 1 year? Kevin Loch (Apr 08)
- Re: options for full routing table in 1 year? Daniel Roesen (Apr 09)
- Re: options for full routing table in 1 year? sthaug (Apr 09)
- Re: options for full routing table in 1 year? Dan Snyder (Apr 09)
- Re: options for full routing table in 1 year? Jeffrey Ollie (Apr 09)
- Re: options for full routing table in 1 year? Hector Herrera (Apr 09)
- Re: options for full routing table in 1 year? Tim Durack (Apr 08)