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From: networkzman on 24 Jun 2008 09:48
Hello,

I am trying to configure SPAN on a cisco 6509 cat switch, we are
trying to configure ports based span, with three ports as source
(which are configured with pvlans) and a destination port on a normal
vlan.
When I issue a command:

set span 3/14,6/7 7/20 both inpkts disable learning enable multicast
enable create

I get the following error:

"Port with a Private Port in the same ASIC can't be made span
destination."

Please could you someone advise/ suggest as to where I am going worng.

Thanks in Advance
From: Trendkill on 24 Jun 2008 10:59
On Jun 24, 9:48 am, networkzman <javz...(a)gmail.com> wrote:
> Hello,
>
> I am trying to configure SPAN on a cisco 6509 cat switch, we are
> trying to configure ports based span, with three ports as source
> (which are configured with pvlans) and a destination port on a normal
> vlan.
> When I issue a command:
>
> set span 3/14,6/7  7/20 both inpkts disable learning enable multicast
> enable create
>
> I get the following error:
>
> "Port with a Private Port in the same ASIC can't be made span
> destination."
>
> Please could you someone advise/ suggest as to where I am going worng.
>
> Thanks in Advance

Not sure what the exact issue is, but if you are using say 6148's,
then ASICs serve every 8 ports (1-8, 9-16, etc). This comes up a lot
because on lower end blades (like 6148s), the asics are common
bandwidth bottlenecks (as an example, a 6148 can only handle one gig
of traffic per asic, so if two ports on the same asic try to push gig
throughput, they will instead only get 500mbits each. Anyway, the way
around this is probably to set a span destination port that is not in
the same asic as any of your source ports. What is your destination
port? Your other option is of course to use VACLs. I think you can
do multiple VLANs to a single VACL, but been awhile since I tinkered
with them.
From: networkzman on 25 Jun 2008 05:58
Hello Trend,

Thanks for your suggestion..I was just trying with available free
ports to configure as a destination port as you said
" ASICs serve every 8 ports (1-8, 9-16, etc). " it seems to be the
same in 6509s as well...seleceted one port, while I was checking the
pvlan capability for the dest ports.. selected from 1-8 range and it
worked.

Thanks for your input!
On Jun 24, 3:59 pm, Trendkill <jpma...(a)gmail.com> wrote:
> On Jun 24, 9:48 am, networkzman <javz...(a)gmail.com> wrote:
>
>
>
>
>
> > Hello,
>
> > I am trying to configure SPAN on a cisco 6509 cat switch, we are
> > trying to configure ports based span, with three ports as source
> > (which are configured with pvlans) and a destination port on a normal
> > vlan.
> > When I issue a command:
>
> > set span 3/14,6/7  7/20 both inpkts disable learning enable multicast
> > enable create
>
> > I get the following error:
>
> > "Port with a Private Port in the same ASIC can't be made span
> > destination."
>
> > Please could you someone advise/ suggest as to where I am going worng.
>
> > Thanks in Advance
>
> Not sure what the exact issue is, but if you are using say 6148's,
> then ASICs serve every 8 ports (1-8, 9-16, etc).  This comes up a lot
> because on lower end blades (like 6148s), the asics are common
> bandwidth bottlenecks (as an example, a 6148 can only handle one gig
> of traffic per asic, so if two ports on the same asic try to push gig
> throughput, they will instead only get 500mbits each.  Anyway, the way
> around this is probably to set a span destination port that is not in
> the same asic as any of your source ports.  What is your destination
> port?  Your other option is of course to use VACLs.  I think you can
> do multiple VLANs to a single VACL, but been awhile since I tinkered
> with them.

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