Re: ICMP-floods

2007-03-22 Thread Jon Otterholm
Peter Jeremy wrote: On 2007-Mar-21 22:08:06 +0100, Jon Otterholm <[EMAIL PROTECTED]> wrote: I did not mention earlier that all if's are vlan-based sub-intefaces. It seems that if I move admin-if's on my routers to a different physical if than the one with the default route, all weird time-exe

Re: ICMP-floods

2007-03-22 Thread Peter Jeremy
On 2007-Mar-21 22:08:06 +0100, Jon Otterholm <[EMAIL PROTECTED]> wrote: >I did not mention earlier that all if's are vlan-based sub-intefaces. It >seems that if I move admin-if's on my routers to a different physical if >than the one with the default route, all weird time-exeed/redir are gone >and

Re: ICMP-floods

2007-03-21 Thread Jon Otterholm
und now and I can not find any routing loops. For example: Router1 has it's default route connected to em0.10. With admin-net on em0.20 I get my icmp-floods. Moving admin-net to em1.20 makes the icmp-floods go away. A possible bug in if_vlan? //Jon

Re: ICMP-floods

2007-03-20 Thread Bruce M. Simpson
I have a patch attached to http://wiki.freebsd.org/Networking to rate-limit ICMP which is generated by the forwarding path. It would be useful to find out if this offers symptomatic relief in this situation, although as Chuck points out, it is most likely being caused by a routing loop. Rega

Re: ICMP-floods

2007-03-20 Thread Chuck Swiger
On Mar 20, 2007, at 3:31 PM, Jon Otterholm wrote: Basically I have a admin-net where all routers and switches are connected. On this net I have a nagios-machine for surveillance (running FreeBSD). Sometimes when my Nagios sends icmp-echo-replies to equipment on my admin-net my FreeBSD-router

ICMP-floods

2007-03-20 Thread Jon Otterholm
Hi. I have some strange netproblems where my FreeBSD-routers sends icmp-redirects/time-exceeds to my surveillance machine. Basically I have a admin-net where all routers and switches are connected. On this net I have a nagios-machine for surveillance (running FreeBSD). Sometimes when my Nagios s