I'm never a big fan of having backup sites that lie active | standby! You may want to look at getting a CSS and doing GSLB (Global Server Load Balancing!)
Anyway, back to your question ...How much of the traffic is local ? You say that you have a peak of 152MB's, but you will only have 3 x 5MB PVC's coming into the "server" farm? Do you have a lot of traffic between the servers ?? If not a 3620 would even be sufficient, with ATM interface and FE interface. It also depends on how much reslience you would like in this "backup" site? . I have a similar scenario, where I make use of a 3620, with 100FX, and 100TX interfaces, going to a 3548G-L3, and fom there into server / user vlans etc! Cheers Troy The Long and Winding Road wrote: > > wrote in message > news:[EMAIL PROTECTED] > > To build a backup server farm site (22 servers), with maximum > requirement > > of 152Mbps (peak): > > > > Economic approach: > > > > 3640 with ATM module > > 3550-48-SMI > > 3 ATM PVCs, to the major points of the backbone (LS1010 > switches and > > 6509-FlexWan ATM card); each PVC 5 Mbps SCR. > > > > Robust and Scalable approach: > > > > 6006 with ATM module > > > > > > The peak is considering the maximum rate if all servers were > accessed at > > the same time (based on MRTG daily statistics). > > > > Any thoughts? > > > > based on my experience, the 3640 may not give you the > performance you > require. especially if you are using any access-lists, > route-maps, QoS. > > Also, with your peaks at well over 100 meg, you might want to > consider a gig > interface on the LAN side. > > a thought - use a dual ethernet router like a 3745 ( twice the > performance > of the 3640 ) in combination with the switch ( which can easily > handle the > load ) put your servers into two subnets / vlans and do > quasi-load-sharing > across those two ethernet interfaces. depends on your traffic > requirements. > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=63878&t=63866 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
