Since implementing 2960 remote switches with 2 port etherchannel for resilience we are getting overrun errors. The etherchannel scans 2 blades and there is very little in the other 8 ports in the block. There is not much traffic on the channel either.
We have other devices connected directly running 20K packets, 500Mb+ with no errors what-so-ever.
Do the buffers needs to be modified for the Portchannel ports?
Do I need to upgrade to 6748 blades?
Port-channel17 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 0013.c4e0.a4c8 (bia 0013.c4e0.a4c8)
Description: Trunk to Rack 17 Switch 1
MTU 1500 bytes, BW 2000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 1000Mb/s
input flow-control is off, output flow-control is unsupported
Members in this channel: Gi3/9 Gi4/9
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters 01:54:18
Input queue: 0/2000/186/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 14613000 bits/sec, 4046 packets/sec
5 minute output rate 8632000 bits/sec, 4014 packets/sec
24558018 packets input, 10813547717 bytes, 0 no buffer
Received 53164 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 186 overrun, 0 ignored
0 input packets with dribble condition detected
24613940 packets output, 7429149701 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
interface GigabitEthernet3/9
description Rack17 switch1
no ip address
switchport
switchport mode trunk
channel-group 17 mode on
interface GigabitEthernet4/9
description Rack17 switch1
no ip address
switchport
switchport mode trunk
channel-group 17 mode on
interface Port-channel17
description Trunk to Rack 17 Switch 1
no ip address
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
end
