On 30/09/2011 17:30, Christopher Morrow wrote: > traceroute is really an example of 'packet expired, send > unreachable'... that, today is basically: > o grab 64bytes of header (or something similar) > o shove that in a payload > o use the src as the dst > o stick my src on > o set icmp > o crc and fire > > there's not really any need to do this in the slow path, is there?
there are unconfirmed rumours that icmp ping and traceroute are handled by hardware on the asr1k. I don't know if they are true. But you're right - it would be good to support this without resorting to hammering the routing engine. I don't really like the idea of punters running traceroutes reducing my bgp convergence time. Nick
