nanog mailing list archives
Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header
From: Nick Hilliard <nick () foobar org>
Date: Fri, 30 Sep 2011 17:38:09 +0100
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
Current thread:
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header, (continued)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Saku Ytti (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Saku Ytti (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Saku Ytti (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Nick Hilliard (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Mohacsi Janos (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Nick Hilliard (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Saku Ytti (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Nick Hilliard (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Dobbins, Roland (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Christopher Morrow (Sep 30)
- Re: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Dobbins, Roland (Sep 30)
- RE: Cisco 7600 PFC3B(XL) and IPv6 packets with fragmentation header Vinny_Abello (Sep 30)