Re: STP cost over Portchannel links

cost = 3 for 2 x gig links bundled

http://www.cisco.com/en/US/tech/tk389/tk213/technologies_configuration_exampl
e09186a008089a821.shtml

* show etherchannel summary*Displays a one-line summary per channel group.

Switch#*show etherchannel 1 summary*
Flags: D - down P - in port-channel
        I - stand-alone s - suspended
        H - Hot-standby (LACP only)
        R - Layer3 S - Layer2
        U - in use f - failed to allocate aggregator
        u - unsuitable for bundling
        w - waiting to be aggregated
        d - default port

Number of channel-groups in use: 1
Number of aggregators: 1

Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------
1 Po1(SU) LACP Gi2/0/23(P) Gi2/0/24(P)

Switch#

  * show spanningtree interface*Displays spanning tree information for the
specified interface.

Switch#*show spanning-tree interface port-channel 1*

Vlan Role Sts Cost Prio.Nbr Type
---------------- ---- --- --------- -------- ---------
VLAN0100 Desg FWD 3 128.616 P2p
Switch#

On Tue, Oct 11, 2011 at 6:49 PM, Routing Freak <routingfreak_at_gmail.com>wrote:

> Hi friends,
>
> I have quick question regarding STP cost on Port channel links. If I have
> 2 gigabit ethernet links bundled together . What is the value of cost in
> STP output. Sorry I dont have any switches with me to check it right now? .
> So can anyone tell me the value of the cost of the STP port channel link.
>
> Thank You.
>
>
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Received on Tue Oct 11 2011 - 22:54:43 ART