Peter, The main difference is that all the "native" LAN modules on the 7600 (meaning all the WS-X65/67 etc) can't actually support the "normal" class-based QoS model, but use a different model. You can read about it here: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/swcg/q os.htm
This has to do with the way the packets are being handled inside the device. For the native LAN modules, all QoS functionality is done on the PFC, and it supports only the above QoS functionality. When using SIP modules (or older OSM/FlexWan modules), the QoS functionality (as well as other things such as MPLS features) are enhanced by the fact that the SIP has extended processing resources on the module and the software allows using this processing power for features which are not available on the native LAN modules. This explains the additional cost - the SIPs have much more hardware on them (such as processor, memory etc) I think you can find some interesting reading on the SIPs here: http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/76sipspa/si pspasw/index.htm Arie -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Peter Basquiat Sent: Saturday, May 05, 2007 19:09 PM To: [email protected] Subject: Re: [c-nsp] 7600 Linecard decisision It's not really clear in which direction our QoS stuff will expand. At the moment Iam thinking on typically class-based wfq on core and edge. What are the differences regarding QoS on the WS-X6582-2PA compared to SIP400/SPA? Other question: talking about features, what's with the WS-X67xx modules, are there other/more features available or do they have only more bandwidth? SIP400+SPA is much more expensive, without knowledge about the exact advantages it's really hard to judge. >Peter, > >Going for the SIP/SPA combination would allow you more features >especially with regards to QoS and VPN PE-CE support. >Can you expand a bit about what kind of core/access QoS you require? > >Arie _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
