Inserting
additional bridge port extenders (BPEs) on rings
You can add bridge port extenders (BPEs) to existing Extended Edge
Switching ring topologies. You can add
BPEs anywhere in the ring.
To add a BPE:
-
Disconnect the cable between the
two BPEs in the ring at the desired insertion point, which allows the ring to
enter the severed state, and then re-converge into two operational
cascades.
-
Connect the new BPE to the same
connection points disconnected previously.
If you have auto-configuration enabled (enable vpex
auto-configuration), you are finished. If you want to manually configure the rest of the
setup (ensure that auto-configuration is disabled), continue with the
following steps.
-
(If you are connecting at the
point where the configured cascades were joined, do not perform this step)
Unconfigure the cascade port of the BPE connecting the new BPE using the
procedure in Removing Bridge Port Extenders from Slot Assignments.
Note
To find where the configured cascades were joined, use the
show vpex
topology { port
port_num} {summary | detail} command, and see where the dynamically created cascade ports ("d" flag)
start on the cascade(s).
-
Configure the new BPE using the
procedure in Manually Configuring Bridge Port Extenders starting with step 3.
Configuring a new VPEX port/slot in a ring destroys the ring, and changes the
configured cascades that formed it. For the new cascades, one ends where the new
slot/BPE was added and the other ends at the next BPE that is connected to the cascade
with the new slot/BPE.
