I want to run stacker compression in one of our WAN link. The link is E1 and both of my routers are 2600XM. My 2621XM has 128MB RAM and the 2651XM has 64MB RAM. I know I have a very small memory that's why I just want to run stack rather than predictor. The traffic that passes this link is just regular internet traffic and Exchange server traffic. Do you think my hardware is enough to run compression on the WAN link? Thanks.