I have a couple if issues on my network at present and I'm sure im chassing my tail so want to verify that my port channel from my Cisco 2960 to Cisco SG300 is setup corectly. I've read a host of post's that mention Native VLAN giving problems and I also enitionaly had issue's with the Port Channel coming up but have solved that on. Anyhow here's my configuration;
-----SG300----
interface vlan 77
ip address 10.0.77.16 255.255.255.0
!
interface gigabitethernet1
description LAG_TO_CORE_SW
channel-group 1 mode auto
!
interface gigabitethernet2
description LAG_TO_CORE_SW
channel-group 1 mode auto
!
interface gigabitethernet28
description LINK_TO_MG_SWITCH
switchport mode access
switchport access vlan 77
!
interface Port-channel1
description "PORT CHANNEL TO CS"
switchport trunk allowed vlan add 77
!
ip default-gateway 10.0.77.1
SG300#show interfaces status Port-Channel 1
Flow Link
Ch Type Duplex Speed Neg control State
-------- ------- ------ ----- -------- ------- -----------
Po1 1G Full 1000 Enabled Off Up
-----Cisco 2960--------
!
interface Port-channel3
description **Po-3 to MGMT Switch**
switchport trunk allowed vlan 77
switchport mode trunk
switchport nonegotiate
!
interface GigabitEthernet1/0/2
description **Po-3 to MGMT Switch**
switchport trunk allowed vlan 77
switchport mode trunk
switchport nonegotiate
channel-protocol lacp
channel-group 3 mode active
!
interface GigabitEthernet2/0/2
description **Po-3 to MGMT Switch**
switchport trunk allowed vlan 77
switchport mode trunk
switchport nonegotiate
channel-protocol lacp
channel-group 3 mode active
!
interface Vlan1
no ip address
shutdown
!
interface Vlan77
ip address 10.0.77.10 255.255.255.0
!
ip default-gateway 10.0.77.1
2960#show etherchannel sum
Flags: D - down P - bundled in port-channel
I - stand-alone s - suspended
H - Hot-standby (LACP only)
R - Layer3 S - Layer2
U - in use f - failed to allocate aggregator
M - not in use, minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
Number of channel-groups in use: 3
Number of aggregators: 3
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) LACP Gi1/0/1(P) Gi2/0/1(P)
2 Po2(SU) LACP Gi1/0/4(P) Gi2/0/4(P)
3 Po3(SU) LACP Gi1/0/2(P) Gi2/0/2(P)
2960#show interfaces port-channel 3
Port-channel3 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 50f7.2201.5c82 (bia 50f7.2201.5c82)
Description: **Po-3 to MGMT Switch**
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: Gi1/0/2 Gi2/0/2
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: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
9924 packets input, 888899 bytes, 0 no buffer
Received 8986 broadcasts (8600 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 8600 multicast, 0 pause input
0 input packets with dribble condition detected
10392 packets output, 1009650 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
