We have been recommended to move our routing services from a pair of 2821 routers to a pair of 3750 switches (with IPSERVICES). I was wondering if anyone has any statistics as to the throughput of the two?
I realize that there are many variables to consider, but I cannot seem to find any comparisons between the routing capabilities of these two products.
Thanks in advance for any input.
I recently went through a similar discussion with a customer about whether to utilize 3750s to do intervlan routing or to use an external router. One aspect became important in our discussion and may be important in your situation as well and it depends on understanding your traffic patterns. If most of the traffic will be "internal" or inter-vlan traffic then there are advantages to using the 3750 to do the routing. If you use the router then you are sending a packet over a physical link to a different box, waiting for the box to make its routing decision, and sending the packet back over the same link so it can be forwarded to the destination VLAN. Now you have the performance of the link as well as the routing performance of the other box impacting the routing performance. If the routing is done by the 3750 then we eliminate 2 trips over the physical link and move data at backplace speeds instead of LAN speeds. If most of the traffic will be "external" (to and from outside addresses) then there may be advantages to having the external router to do the routing since it will need to handle the traffic anyway.
So what kind of traffic pattern do you think you are dealing with?