Hmm, it's not news for us. 45K can hold core routing only as inter-back-bone router, not more. But why, why this crasy CISCO could not predict future when they designed 45K routers? It was not difficult for them develop this box to cary 64 or 128MB RAM.
Looks like the 45k mark was reached:
Folks with 7000's and SSE's should start monitoring their memory utilization via "show sse summary".
There's a couple of comments here: First, 45k is not the limit. More like 60k. You'll pardon me for being cautious. The limitation is not DRAM. It's the 64k words of SRAM that the SSE uses for its high speed forwarding table. You don't want to pay for 64Mbytes of SRAM. ;-) When cisco's engineers designed the SSE, we knew very well what was happening. We expected to be given the opportunity to produce subsequent hardware which implemented the SSE in an ASIC. If, by that time, CIDR hadn't killed off the exponential growth, we would have expanded the address space. Unfortunately, cisco management decided that the SSE ASIC should not be implemented (a mistake which, to my knowledge, cisco has not corrected). Thus, the 7500 exists without an SSE. Tony