Hi all!
I have 3 L2 links between offices. Each of them caonfigured as 10mb/s. I tryed to use etherchannel and load-balance, but didn't meet real balance. Is it because of traffics flow, or misconfiguration? I just can't catch equal load-balance between links. May be there are any problems on provider side, but I am not sure. May be I should change balance algorithm?
SW1
SW1#sh run int Gi2/7
Building configuration...
Current configuration : 169 bytes
!
interface GigabitEthernet2/7
switchport
switchport access vlan 301
switchport mode access
speed 10
duplex full
flowcontrol send on
channel-group 2 mode on
end
SW1#sh run int Gi2/8
Building configuration...
Current configuration : 169 bytes
!
interface GigabitEthernet2/8
switchport
switchport access vlan 301
switchport mode access
speed 10
duplex full
flowcontrol send on
channel-group 2 mode on
end
SW1#sh run int Gi2/9
Building configuration...
Current configuration : 169 bytes
!
interface GigabitEthernet2/9
switchport
switchport access vlan 301
switchport mode access
speed 10
duplex full
flowcontrol send on
channel-group 2 mode on
end
SW1#sh run int port-channel 2
Building configuration...
Current configuration : 149 bytes
!
interface Port-channel2
switchport
switchport access vlan 301
switchport mode access
flowcontrol send on
spanning-tree bpdufilter enable
end
SW1#sh etherchannel 2 summary
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 N - not in use, no aggregation
f - failed to allocate aggregator
M - not in use, no aggregation due to minimum links not met
m - not in use, port not aggregated due to minimum links not met
u - unsuitable for bundling
d - default port
w - waiting to be aggregated
Number of channel-groups in use: 3
Number of aggregators: 3
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) - Gi2/7(P) Gi2/8(P) Gi2/9(P)
Last applied Hash Distribution Algorithm: Fixed
SW1#sh etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-dst-mixed-ip-port
mpls label-ip
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
IPv4: Source XOR Destination IP address and TCP/UDP (layer-4) port number
IPv6: Source XOR Destination IP address
MPLS: Label or IP
SW1#sh etherchannel 2 port-channel
Port-channels in the group:
----------------------
Port-channel: Po2
------------
Age of the Port-channel = 0d:21h:06m:43s
Logical slot/port = 14/2 Number of ports = 3
GC = 0x00000000 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = -
Fast-switchover = disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
0 49 Gi2/7 On 3
2 92 Gi2/8 On 3
1 24 Gi2/9 On 2
Time since last port bundled: 0d:20h:38m:03s Gi2/9
Time since last port Un-bundled: 0d:20h:38m:03s Gi2/9
Last applied Hash Distribution Algorithm: Fixed
SW2
SW2#sh run int Gi1/32
Building configuration...
Current configuration : 170 bytes
!
interface GigabitEthernet1/32
switchport
switchport access vlan 301
switchport mode access
speed 10
duplex full
flowcontrol send on
channel-group 2 mode on
end
SW2#sh run int Gi1/36
Building configuration...
Current configuration : 170 bytes
!
interface GigabitEthernet1/36
switchport
switchport access vlan 301
switchport mode access
speed 10
duplex full
flowcontrol send on
channel-group 2 mode on
end
SW2#sh run int Gi1/42
Building configuration...
Current configuration : 170 bytes
!
interface GigabitEthernet1/42
switchport
switchport access vlan 301
switchport mode access
speed 10
duplex full
flowcontrol send on
channel-group 2 mode on
end
SW2#sh run int port-channel 2
Building configuration...
Current configuration : 187 bytes
!
interface Port-channel2
switchport
switchport access vlan 301
switchport trunk encapsulation dot1q
switchport mode access
flowcontrol send on
spanning-tree bpdufilter enable
end
SW2#sh etherchannel 2 summary
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 N - not in use, no aggregation
f - failed to allocate aggregator
M - not in use, no aggregation due to minimum links not met
m - not in use, port not aggregated due to minimum links not met
u - unsuitable for bundling
d - default port
w - waiting to be aggregated
Number of channel-groups in use: 2
Number of aggregators: 2
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) - Gi1/32(P) Gi1/36(P) Gi1/42(P)
Last applied Hash Distribution Algorithm: Fixed
SW2#sh etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-dst-mixed-ip-port
mpls label-ip
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
IPv4: Source XOR Destination IP address and TCP/UDP (layer-4) port number
IPv6: Source XOR Destination IP address
MPLS: Label or IP
SW2#sh etherchannel 2 port-channel
Port-channels in the group:
----------------------
Port-channel: Po2
------------
Age of the Port-channel = 2d:20h:59m:58s
Logical slot/port = 14/2 Number of ports = 3
GC = 0x00000000 HotStandBy port = null
Port state = Port-channel Ag-Inuse
Protocol = -
Fast-switchover = disabled
Ports in the Port-channel:
Index Load Port EC state No of bits
------+------+------+------------------+-----------
1 49 Gi1/32 On 3
0 92 Gi1/36 On 3
2 24 Gi1/42 On 2
Time since last port bundled: 0d:11h:29m:48s Gi1/32
Time since last port Un-bundled: 0d:11h:29m:50s Gi1/32
Last applied Hash Distribution Algorithm: Fixed
