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Posted by on August 21, 2008, 10:05 am
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> > > > I understand that you can only run in active-standby mode, however,
> > > > I've read that the interfaces on the standby unit are active. =A0Do=
es
> > > > this mean you can forward L2 traffic through them?
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> > > > Thx
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> > > How would you forward it, make the spantree priority lower? =A0Even
> > > then, the other module would be routing in/out of the VLAN, so what
> > > would this really buy you in terms of balancing, presuming that is
> > > what you are after? =A0Not sure I follow the requirement.
>
> > For use as additional uplink ports or redundant ports. =A0If the active
> > sup goes down it provides L2 redundancy
> > I noticed this reference
> > With Release 12.2(18)SXD and earlier releases, when a redundant
> > supervisor engine is in standby mode, the two Gigabit Ethernet
> > interfaces on the redundant supervisor engine are always active.
> > In this doc. =A0This is apparently referring to a 720, while we're goin=
g
> > with 32s so I'm not clear on distinctions in this behavior or if this
> > implies the ports are actually active in spanning-tree, etc.http://www.=
cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF...
>
> Ah I'm with you. =A0So you are trying to use the physical ports on the
> sup's for hot standby in case the other ports go down. =A0In this case
> you can't channel them with the ports on the first sup, because I
> don't think you can channel ports on different modules. =A0Which means
> these would be a 2nd set of links to the same switch as the first set
> of supervisors (probably links to a 2nd sup on the other switch). =A0So
> unless you are connecting different networks, I would think that these
> are not actively forwarding traffic. =A0If you were connecting them to
> different switches it would work, but presuming the modules are for
> full physical/logical redundancy, I don't see how the ports would be
> sending/receiving traffic if its the same config, same trunk or
> connection, etc. =A0I could be missing something....
i'd like to give some comments....
what about uplink using in "ring" L2 topology, where each ring's side
created on Sup's uplinks???
thanks
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