The ES20 has most of the same feature set as the SIP-400, and if Ethernet is really what you want, it's a cheaper option. The ES20 w/better DFC is $60k. The SIP-400 itself is $35k and then each 2-port GigE is $10k. You can only put 4 GigE ports in a single SIP-400 before it may be oversubscribed. Whether it's oversubscribed depends on your packet size since it's PPS limited, not backplane bandwidth limited.
Worst case scenario you need 3 SIP-400s with 5 2xGE SPAs, which is $155,000. Versus 20 line-rate GigE ports that costs $60k, or even with the IPV6/MPLS VPN license is $100k... The SIP/SPA GigE pricing is a lot, I think that's why they did the ES20 for those who need more GigE with more features. Phil On Jun 7, 2007, at 9:43 PM, Brad Henshaw wrote: > Phil Bedard wrote: > >> Your answers mean that the LAN-type GigE on the 7600 series >> is probably not what you want. >> Some of those cards are oversubscribed (IE, there are 24 GigE >> ports handled by 2 10-gig ASICs.) and they don't do shaping. >> >> While it's very new, the ES20 20-port GigE blade for the 7600 >> I think is the cheapest option to get what you want, unless >> you need IPV6/mVPN/ 4364VPN support, which adds to the cost >> via a license. > > Possibly a cheaper option is the 7600 with SIP-200 and FE SPAs or > SIP-400/SIP-600 with FE or GE SPAs where shaping is needed. > > From memory there is some level of oversubscription with the SIP's > also but I don't recall finding any clear documentation on this. > > Use standard FE/GE blades where you don't need advanced QoS - the > SIPs & SPAs are just too damn expensive! > > Also bear in mind that if you go up to the SIP-600, Sup/RSP720 is > Required. > > Regards, > Brad Phil Bedard [EMAIL PROTECTED] _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
