On Tue, 2 Jul 2013, Juliusz Chroboczek wrote:
Anybody seen anything similar?
I don't know if this is the cause, but older gear from Extreme Networks (their end-of-90ties and beginning of 2000s), will do ICMP in slow-path when routing (even packets going through the device) and "everything else" in fast-path. This could cause latency spikes and PDV approximately similar to what's seen in the picture.
The seen behaviour could also perhaps be caused by per-packet QoS settings in the path, where ICMP might have lower priority than GRE. I don't think this explanation is likely though.
-- Mikael Abrahamsson email: [email protected] _______________________________________________ Babel-users mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/babel-users
