Re: flowscan & SubNetIO.pm

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Subject: Re: flowscan & SubNetIO.pm
From: Alexander Serkin (als@cell.ru)
Date: Thu Aug 16 2001 - 07:05:58 CDT

Christian Hammers wrote:
> 
> On Thu, Aug 16, 2001 at 02:17:31PM +0400, Alexander Serkin wrote:
> > I've no idea why ip nexthop is 0 for some networks
> > on my router. They are connected via serial E1 interfaces
> This just means that the traffic is for the router itself e.g. telnet
> connections or BGP updates and thus it won't send these packages to
> another hop.
> 

Well, things are quite clear for me now.
There were static routes to the subnets on my router like this:

ip route a.b.c.d 255.255.255.248 Se4/2:0

in this case "sh ip cef Se4/2:0" shows

Prefix              Next Hop             Interface
a.b.c.d/29	    attached		  Serial4/2:0

and exported ip nexthop is 0.0.0.0 for that network.
I've changed static routes like this:

ip route a.b.c.d 255.255.255.248 gw.add.re.ss

After that "sh ip cef Se4/2:0" became as follows:

Prefix              Next Hop             Interface
a.b.c.d/29	    gw.add.re.ss	 Serial4/2:0

and exported ip nexthop is gw.add.re.ss.
Now traffic is accumulated in the rdd for both in and out.

I'm quite happy now...

-- 
Alexander

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