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Posted by on June 26, 2008, 9:46 am
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> > > Should the ingress option allow me to connect to the host on the
> > > destination port with SPAN enabled. =A0It isn't
>
> > > Session 1
> > > ---------
> > > Type =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 : Local Session
> > > Source VLANs =A0 =A0 =A0 =A0 =A0 :
> > > =A0 =A0 Both =A0 =A0 =A0 =A0 =A0 =A0 =A0 : 7
> > > Destination Ports =A0 =A0 =A0: Gi1/0/3
> > > =A0 =A0 Encapsulation =A0 =A0 =A0: Native
> > > =A0 =A0 =A0 =A0 =A0 Ingress =A0 =A0 =A0: Enabled, default VLAN =3D 32=
1
> > > =A0 =A0 Ingress encap : Untagged
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> > Not sure I understand the question. =A0Ingress means that the span port
> > will also receive regular frames for the access vlan that the span
> > port is in I think. =A0Generally, you don't connect to the sniffer via
> > the same port that sniffs, its a receiving port only (or should be).
> > You use a management interface or second NIC to control the sniffer.
> > So even if the ingress did work that way, you would have to configure
> > an IP on that NIC in that VLAN. =A0Could work, but I've never heard of
> > anyone using a sniffer that way.
>
> linguafr,
>
> Trendkill is right... allowing ingress will allow the switch to
> receive traffic from the attached "sniffer." However, it looks like
> you've spanned the whole VLAN onto an interface. (albeit a gigabit
> one)
> Traffic from your host may be making it onto the switch - but it may
> not have enough bandwidth to receive any responses.
> Try the same span, but span only one interface (not a trunk port) on
> the VLAN - see if your "sniffer" works. Also, check the port
> utilization while spanning the whole VLAN.
>
> By the way, Trendkill - I've used that method in the past - when I
> absolutely had to. It works as long as you don't overwhelm the link.
> Good Luck.
>
> -JC- Hide quoted text -
>
> - Show quoted text -
I have used Ingress frequently however I have found that it
does not seem to actually work on all platforms. More modern
ones dont seem to work.
I think that I have found that it did not work on
4500 SE IV
4500 SE V
6500 SUP 720
3750
May of course be software and other hardware dependent.
I have formed the view that it works on older stuff and not on newer
stuff.
The documentation and command line say that it works.
As far as I can recall.
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