RE: SPAN: Can the monitoring Ethernet card have an IP address

From: Devon True (dtrue@xodiax.com)
Date: Thu Oct 18 2001 - 23:52:41 EDT


Steve,

Okay. We were going to use a 2924XL (to monitor other machines on the
switch), so I'll test it out on the spare. Thanks! :)

-----
Devon

> -----Original Message-----
> From: Stephen Gill [mailto:gillsr@yahoo.com]
> Sent: Thursday, October 18, 2001 11:44 PM
> To: Devon True
> Cc: cisco-nsp@puck.nether.net
> Subject: RE: SPAN: Can the monitoring Ethernet card have an IP address
>
>
> It may depend on what class of switch you are running...
>
> For a 2900-XL there doesn't seem to be a flag to allow
> incoming packets
> on a destination port, however even after configuring span I
> was able to
> ping through to a destination interface. I did not verify
> that span was
> properly working, only that it was "enabled".
>
> For a 6500 class switch using IOS 12.1E, the manual seems to indicate
> under the "SPAN Configuration Guidelines and Restrictions"
> section that:
>
> "You cannot configure a SPAN destination interface to receive ingress
> traffic."
>
> I have not verified this myself - best way to know for sure is to test
> it out if you can.
>
> -- steve
>
>
> -----Original Message-----
> From: Devon True [mailto:dtrue@xodiax.com]
> Sent: Thursday, October 18, 2001 9:44 PM
> To: Stephen Gill
> Cc: cisco-nsp@puck.nether.net
> Subject: RE: SPAN: Can the monitoring Ethernet card have an IP address
>
> Steve,
>
> What about an IOS based switched?
>
> -----
> Devon
>
> > -----Original Message-----
> > From: Stephen Gill [mailto:gillsr@yahoo.com]
> > Sent: Thursday, October 18, 2001 10:08 PM
> > To: Devon True; cisco-nsp@puck.nether.net
> > Subject: Re: SPAN: Can the monitoring Ethernet card have an
> IP address
> >
> >
> > Yes.
> >
> > Remember to include the "inpkts enable" flag on a set based switch.
> >
> > set span {src_mod/src_ports | src_vlan | sc0}
> dest_mod/dest_port [rx |
> > tx | both] [inpkts {enable | disable}] [learning {enable | disable}]
> > [multicast {enable | disable}] [create]
> >
> >
> > -- steve
> >
> > --- Devon True <dtrue@xodiax.com> wrote:
> > > All:
> > >
> > > If you setup a SPAN monitor port on a Catalyst switch, can the
> > > Ethernet
> > > card on the server have an IP address associated with it
> for remote
> > > manageability (i.e. ssh to the server to check logs)? Or
> do you need
> > > to
> > > have two Ethernet cards, one for monitoring and one for remote
> > > access?
> > >
> > > Thanks!
> > >
> > > -----
> > > Devon
> > >
> >
> >
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