| | | |
| | | |
| |Gig0/1 Gig0/1| | |
| |-----------------------| |
| | | |
| S1 | | S2 |
| | | |
| |-----------------------| |
| |Gig0/1 Gig0/2| | |
| | | |
| | | |
--------Configuration-----------------------
P1S1(config)#interface range GigabitEthernet 0/1 - 02
P1S1(config)#channel-group 1 mode desirable
P2S1(config)#interface range GigabitEthernet 0/1 - 02
P2S1(config)#channel-group 1 mode desirable
---------
In order to verify the port channel
#show interfaces port-channel channel-group-number
#show etherchannel channel-group-number summary
In order to check the STP status
#show spanning-tree vlan vlan-number detail
-----------------------------------------
Sample output
---------------------------------------
S1# show interface port-channel 1
Port-channel1 is up, line protocol is up
Hardware is EtherChannel, address is 0002.4b28.db02 (bia 0002.4b28.db02)
MTU 1500 bytes, BW 200000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s
input flow-control is off, output flow-control is off
Members in this channel: Gi0/1 Gi0/2
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:03:27, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
26 packets input, 5344 bytes, 0 no buffer
Received 17 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
59 packets output, 5050 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
S1# show spanning-tree vlan 1 detail
VLAN1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 0002.4b28.db01
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 1 last change occurred 00:00:38 ago
from Port-channel1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 0, topology change 0, notification 0, aging 0
Port 65 (Port-channel1) of VLAN1 is forwarding
Port path cost 12, Port priority 128, Port Identifier 128.65.
Designated root has priority 32768, address 0002.4b28.db01
Designated bridge has priority 32768, address 0002.4b28.db01
Designated port id is 128.65, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
BPDU: sent 34, received 0
S1# show etherchannel 1 summary
Flags: D - down P - in port-channel
I - stand-alone s - suspended
R - Layer3 S - Layer2
U - port-channel in use
Group Port-channel Ports
-----+------------+-----------------------------------------------------------
1 Po1(SU) Gi0/1(P) Gi0/2(P)
