http://www.google.com/url?sa=t&source=web&ct=res&cd=2&url=http%3A%2F%2Fwww.academypublisher.com%2Fjnw%2Fvol02%2Fno03%2Fjnw02030617.pdf&ei=-4zzSZ38FpywtAP0sLDPCg&rct=j&q=Linux+sofware+router%3A+data+plane+optimizations&usg=AFQjCNE5OzutnNt9SWgOaMcZydC5jLXTwg in-depth linux routing performance evaluation, including code profiling, execution path analysis, etc
http://www.google.com/url?sa=t&source=web&ct=res&cd=17&url=http%3A%2F%2Ffreedomhec.pbwiki.com%2Ff%2Flinux_ip_routers.pdf&ei=yXDzSdjSD4yYtAPG_cXPCg&rct=j&q=linux+routing+performance&usg=AFQjCNGNHX6jWJ7Ybrg8Jod24MMenJYt0g Paper from vayatta with some benchmarks that shows raw ip forwarding performance with various packet sizes and % of packet losses. Basically 2.8 Intel celeron + 1G broadcom (tg3) cards can deliver ~150Mbps on 64b packets limited by CPU
http://ask.slashdot.org/comments.pl?sid=596703&cid=23959669 ? “Why VoIP is usless when I download something on bittorent; can I twik my router to fix it” ?
http://tservice.net.ru/~s0mbre/old/?section=projects&item=carp CARP is an improved version of the Virtual Router Redundancy Protocol (VRRP) standard. It has more features than Cisco’s HSRP. There is another[user-space] implementation called ucarp. This version does not compartable with OpenBSD CARP.
http://www.tancsa.com/blast.html results, data and following discussion from 2006 test of routing performance
http://www.transnexus.com/White%20Papers/White%20Papers.htm Transnexus sell some commercial product (something like session authorization / CDR device for asterisk) , but they did performance testing for asterisk (back 2 back sip) and SIP switching for Ser
http://dynagen.org/tutorial.htm Dynamips is a Cisco router emulator written by Christophe Fillot. It emulates 1700, 2600, 3600, 3700, and 7200 hardware platforms, and runs standard IOS images. In Chris’ own words: