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Re: Weird thing happening

  • From: Tony Rall
  • Date: Wed Jan 22 13:04:45 2003
  • Sensitivity:

On Wednesday, 2003-01-22 at 12:04 EST, "Dale Levesque" 
<[email protected]> wrote:
> I have been looking at some stats on a router and I am seeing high
> utilization between 2 routers, I am seeing utilization on one interface
> of about 60megs up and down, when the aggregate of all other interfaces
> is about 13megs up and down. The routers that I am using are a
> Riverstone 8600 and a Redback sms500, these have been in production for
> over a year and have not had this problem before.  I have made sure that
> the rate-limiting for icmp,snmp,bgp,ospf and rip are set down to under a
> meg (for now). These 2 routers are directly connected, and I am not
> seeing a lot of broadcast traffic. If someone has some in-sight on what
> is happening please let me know. Also this happened to me yesterday on a
> different set of routers w/ the same configuration and nothing has been
> changed. The problem just sort of fixed itself. I would think it's a Dos
> or DDOS but my inet interfaces are not getting more that like is 13megs
> up and down. I have done the obvious like reboot, incase and interface
> is jabbering and cables test out. I would not be so perplexed at this
> issue if it happened all the time or only happened on one set of
> routers, but this seems to be an isolated incident but not so isolate
> because it has happened on another set of routers (one Riverstone and on
> Redback again).

Routing loop?  Try some traceroutes.

Tony Rall