[OpenIndiana-discuss] Configuring span ports on oi151

James Carlson carlsonj at workingcode.com
Mon Oct 24 16:13:28 UTC 2011

carlopmart wrote:
>  Is it possible to configure a bridge (with n physical nics) with a span
> port like for example FreeBSD does??

No, mirror port functionality does not exist.

If you intend to use snoop / tcpdump / wireshark on the span port, then
just use the existing monitoring facility.  A bridge created with dladm
will have an observability node, based on the bridge name.  If you
create a bridge named "foo", then you can snoop on "foo0" and see all of
the packets processed by the bridge.

If you're using the span port for some other purpose, then the feature
will probably have to be added to the code.  It's not present in the
current code because the observability node covered the known uses of
that sort of port without extra complications.

James Carlson         42.703N 71.076W         <carlsonj at workingcode.com>

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