From: ccie2be (ccie2be@nyc.rr.com)
Date: Fri Oct 01 2004 - 13:12:03 GMT-3
Hey Brian,
Hmmm, sounds like that's very a good point to keep in mind. Thanks for
pointed that out.
However, typically debug is used to solve a routing adjacency issue e.g.
ospf neighbors not forming or problems with isdn where you'll first enable
some debug command and then do a ping.
In cases like these, are packets typically processed switched or fast
swtiched?
Tim
----- Original Message -----
From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study" <ccielab@groupstudy.com>
Sent: Friday, October 01, 2004 11:34 AM
Subject: RE: Debug ip packet
Tim,
Keep in mind that you can only debug traffic that is process
switched. If it is transit traffic, most likely it is not process
switched. To set the traffic to process switching, issue the "no ip
route-cache" command on the interface.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> ccie2be
> Sent: Friday, October 01, 2004 9:23 AM
> To: Bob Sinclair; Group Study
> Subject: Re: Debug ip packet
>
> Hi Bob,
>
> Thanks. This is great. I figured there had to be a way of doing this
> although I had no idea what that would be.
>
> I'm continually amazed by all the brain power I see here on GS.
>
> Thanks again. Tim
>
> ----- Original Message -----
> From: "Bob Sinclair" <bsinclair@netmasterclass.net>
> To: "ccie2be" <ccie2be@nyc.rr.com>; "Group Study"
<ccielab@groupstudy.com>
> Sent: Friday, October 01, 2004 10:16 AM
> Subject: Re: Debug ip packet
>
>
> > Tim,
> >
> > You can set a debug "condition" that will show matches for only a
> specified
> > interface. The downside is that you MIGHT forget to explicitly
remove
> it
> > when your done! Then subsequent debugs will only show for the
> originally
> > set condtion. Undebug all does NOT remove the interface condition.
It
> must
> > be explicitly removed.
> >
> >
> > R1#
> > R1#
> > R1#debug interface f0/0
> > Condition 1 set
> > R1#debug ip packet 101
> > IP packet debugging is on for access list 101
> > R1#sh debug
> > Generic IP:
> > IP packet debugging is on for access list 101
> >
> > R1#sh debug condition
> >
> > Condition 1: interface Fa0/0 (1 flags triggered)
> > Flags: Fa0/0
> >
> > R1#no debug interface f0/0
> > This condition is the last interface condition set.
> > Removing all conditions may cause a flood of debugging
> > messages to result, unless specific debugging flags
> > are first removed.
> >
> > Proceed with removal? [yes/no]: yes
> > Condition 1 has been removed
> > R1#
> > R1#u all
> > All possible debugging has been turned off
> > R1#
> >
> >
> > Bob Sinclair
> > CCIE #10427, CISSP, MCSE
> > www.netmasterclass.net
> >
> > ----- Original Message -----
> > From: "ccie2be" <ccie2be@nyc.rr.com>
> > To: "Group Study" <ccielab@groupstudy.com>
> > Sent: Friday, October 01, 2004 9:33 AM
> > Subject: Debug ip packet
> >
> >
> > > Hi guys,
> > >
> > > I hope this isn't a totally stupid question, but...
> > >
> > > Is there a way to configure debug ip packet so that I can see just
the
> > > packets
> > > coming in or leaving a given interface?
> > >
> > > I know an acl an be attached to debug ip packet but I can't figure
out
> a
> > > way
> > > to specify just a single interface.
> > >
> > > Thanks alot, Tim
> > >
> > >
>
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