The WS-X6704-10GE has: - Xenpacks - only 16MB buffers per port compared to 200MB on WS-X6708 - is about 5 years old. I remember this was the first 10G card we used in 6500 back in 2005/6 - traditionally targeted for LAN and DC segment with simple/none QoS -> hence the QoS implementation is simple based on WRR - see http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/tpqoscampus.html#wp1072698 - needs a DFC card for ingress 8q8t - see http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/tpqoscampus.html#wp1072698
Therefore a much better alternative is WS-X6708 or even WS-X6716. However bare in mind that these are also "LAN" cards therefore might not suite your QoS needs. For general QoS architecture on C6500 see http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd803e5269.html. Cisco quickly found out that you cannot do much "sophisticated" stuff with cards above and came with ES product line for service provider segment - which is the ES20 and newer ES+ (http://www.cisco.com/en/US/docs/solutions/Enterprise/Video/tpqoscampus.html#wp1072698). Hope it helps, -Pavel On Fri, Jan 29, 2010 at 11:04 PM, Phil Bedard <[email protected]> wrote: > The ES20 cards have 512MB, the SIP-600 has 256MB, but I think they both say > 100ms unidirectional buffering... Is there a chance of congesting the egress > interfaces where you would need the larger buffers? They all support LLQ for > priority traffic. > > Phil > > > On Jan 29, 2010, at 12:22 PM, Matthew Huff wrote: > >> We are planning on moving a large portion of our data center to a colo >> facility at an financial exchange. We will be using redundant 10-GE >> connections from our existing pair of 7604 to a new pair of 7606 with >> Sup720-3B. We won't be doing MPLS/VPN, etc... Just normal L3 routing >> including PIM sparse mode multicast. Since a significant amount of the >> traffic will be market data, the line rate will be very bursty including >> micro-bursts. We will be setting up a series of LLQ queues with Modular QoS >> CLI and are interested in H-QOS, so I have some questions regarding which >> 10GB interface. >> >> The choices are: >> >> 1) WS-X6704-10GE. The standard linecard. TX queue of 1p7q8t. 16MB per port >> buffer >> 2) 7600-ES20-10G3C. TX queue ??? (configurable ???), buffer size ??? >> 3) 7600-SIP-600 with SPA-10X1GE. TX queue ???, buffer size ??? >> >> The SIP and ES20 may be overkill, maybe not. We aren't doing MPLS or VRF, or >> QinQ or any other tunneling, but we need the most flexible, best 10GB WAN >> interface that can help us deal with bursting/QOS. >> >> Any experiences, suggestions, warnings...? >> >> ---- >> Matthew Huff | One Manhattanville Rd >> OTA Management LLC | Purchase, NY 10577 >> http://www.ox.com | Phone: 914-460-4039 >> aim: matthewbhuff | Fax: 914-460-4139 >> >> >> >> _______________________________________________ >> 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/ > _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
