Information Technology Reference
In-Depth Information
In our example, we know that Switch A had a VLAN mismatch, so we will go to Switch A and put port
2/4 back into VLAN 1. Then we will turn on the channel for ports 2/1-4. Switch A will not show that it's
connected until we re-enable Switch B ports. Then when we have fixed Switch A and put it in channeling
mode, we will go back to Switch B and re-enable the ports.
Switch-A (enable)
set vlan 1 2/4
VLAN 1 modified.
VLAN 2 modified.
VLAN Mod/Ports
---- -----------------------
1
2/1-24
Switch-A (enable)
set port channel 2/1-4 on
Port(s) 2/1-4 channel mode set to on.
Switch-A (enable)
sh port channel
Port Status Channel Channel Neighbor Neighbor
mode status device port
----- ---------- --------- ----------- ------------------------- ----------
2/1 notconnect on channel
2/2 notconnect on channel
2/3 notconnect on channel
2/4 notconnect on channel
----- ---------- --------- ----------- ------------------------- ----------
Switch-B (enable)
show port channel
Port Status Channel Channel Neighbor Neighbor
mode status device port
----- ---------- --------- ----------- ------------------------- ----------
2/1 errdisable on channel
2/2 errdisable on channel
2/3 errdisable on channel
2/4 errdisable on channel
----- ---------- --------- ----------- ------------------------- ----------
Switch-B (enable)
set port enable 2/1-4
Ports 2/1-4 enabled.
Switch-B (enable) 2000 Jan 17 23:15:22 %PAGP-5-PORTTOSTP:Port 2/1 joined bridg4
2000 Jan 17 23:15:22 %PAGP-5-PORTTOSTP:Port 2/2 joined bridge port 2/1-4
2000 Jan 17 23:15:22 %PAGP-5-PORTTOSTP:Port 2/3 joined bridge port 2/1-4
2000 Jan 17 23:15:22 %PAGP-5-PORTTOSTP:Port 2/4 joined bridge port 2/1-4
Switch-B (enable)
show port channel
Port Status Channel Channel Neighbor Neighbor
mode status device port
----- ---------- --------- ----------- ------------------------- ----------
2/1 connected on channel
2/2 connected on channel
2/3 connected on channel
2/4 connected on channel
----- ---------- --------- ----------- ------------------------- ----------
