Saturday, March 7, 2020

Port-channel config help

Hi,

I have plugged 2 UTP 1Gb cable on 2 ports of a 3750 switch and 2 ports of a 2960 switch.

I am trying to trunk the 2 switches with a port-channel, but something seems off in my configs since the port-channel reports a speed of 1000Mb/s when I wass expecting 2000Mb/s

Config on Switch1

interface Port-channel1 switchport trunk encapsulation dot1q switchport mode trunk interface GigabitEthernet1/0/11 switchport trunk encapsulation dot1q switchport mode trunk channel-group 1 mode on ! interface GigabitEthernet1/0/12 switchport trunk encapsulation dot1q switchport mode trunk channel-group 1 mode on ! 

Some more info

Switch1#show interfaces port-channel 1

Port-channel1 is up, line protocol is up (connected)

Hardware is EtherChannel, address is d4a0.2ab7.b48c (bia d4a0.2ab7.b48c)

MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,

reliability 255/255, txload 1/255, rxload 0/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 1000Mb/s, link type is auto, media type is unknown

input flow-control is off, output flow-control is unsupported

Members in this channel: Gi1/0/11 Gi1/0/12

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/0 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

12227738 packets input, 2355872064 bytes, 0 no buffer

Received 115654 broadcasts (114816 multicasts)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 114816 multicast, 0 pause input

0 input packets with dribble condition detected

30714069 packets output, 25032340084 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

0 output buffer failures, 0 output buffers swapped out

Switch1#show etherchannel

Channel-group listing:

Group: 1

Group state = L2

Ports: 2 Maxports = 8

Port-channels: 1 Max Port-channels = 1

Protocol: -

Minimum Links: 0

Config on Switch2

interface Port-channel1 interface GigabitEthernet1/0/23 channel-group 1 mode on ! interface GigabitEthernet1/0/24 description Trunk Port to Stack Master's port 12 channel-group 1 mode on ! 

Some more info:

Switch2#show int port-channel 1

Port-channel1 is up, line protocol is up (connected)

Hardware is EtherChannel, address is 00cc.fc21.7e98 (bia 00cc.fc21.7e98)

MTU 1500 bytes, BW 2000000 Kbit/sec, DLY 10 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 1000Mb/s, link type is auto, media type is unknown

input flow-control is off, output flow-control is unsupported

Members in this channel: Gi1/0/23 Gi1/0/24

ARP type: ARPA, ARP Timeout 04:00:00

Last input 19:36:42, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 58000 bits/sec, 106 packets/sec

5 minute output rate 4000 bits/sec, 5 packets/sec

30728351 packets input, 25033314906 bytes, 0 no buffer

Received 7136969 broadcasts (626201 multicasts)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 626201 multicast, 0 pause input

0 input packets with dribble condition detected

12226992 packets output, 2355786810 bytes, 0 underruns

0 output errors, 0 collisions, 1 interface resets

0 unknown protocol drops

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 pause output

0 output buffer failures, 0 output buffers swapped out

Switch2#show etherchannel

Channel-group listing:

Group: 1

Group state = L2 Ports: 2 Maxports = 8 Port-channels: 1 Max Port-channels = 1 Protocol: - Minimum Links: 0

Can someone help me get it right?



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