L2
コマンド
interface range <開始インターフェース名-終了インターフェース名>
channel-group <グループ番号> mode <on | プロトコル>
投入コンフィグ
test1(config)#interface range gi0/1-2
test1(config-if-range)#channel-group 2 mode on
Creating a port-channel interface Port-channel 2
test1(config-if-range)#
test2(config)#interface range gi0/1-2
test2(config-if-range)#channe
test2(config-if-range)#channel-group 1 mode on
test2(config-if-range)#
確認
test1
*Dec 18 06:49:23.772: %LINK-3-UPDOWN: Interface Port-channel2, changed state to up
*Dec 18 06:49:24.772: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel2, changed state to up
test1#show etherchannel 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, minimum links not met
m - not in use, port not aggregated due to minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
A - formed by Auto LAG
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) - Gi0/1(P) Gi0/2(P)
test1#show interface port-channel 2
Port-channel2 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 5254.0008.9569 (bia 5254.0008.9569)
MTU 1500 bytes, BW 2000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
test2
*Dec 18 06:49:05.122: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up
*Dec 18 06:49:06.122: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up
test2#show etherchannel 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, minimum links not met
m - not in use, port not aggregated due to minimum links not met
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
A - formed by Auto LAG
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
1 Po1(SU) - Gi0/1(P) Gi0/2(P)
test2#show interfaces port-channel 1
Port-channel1 is up, line protocol is up (connected)
Hardware is EtherChannel, address is 5254.0009.33b4 (bia 5254.0009.33b4)
MTU 1500 bytes, BW 2000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
論理リンク→物理ポートへ設定反映
【設定前】
interface GigabitEthernet0/1
negotiation auto
channel-group 2 mode on
end
test1(config)#do sh run interface gigabitEthernet 0/2
Building configuration...
Current configuration : 79 bytes
!
interface GigabitEthernet0/2
negotiation auto
channel-group 2 mode on
end
test1(config)#interface port-channel 2
test1(config-if)#switchport access vlan 10
【設定後】
test1(config)#do sh run interface gigabitEthernet 0/1
Building configuration...
Current configuration : 106 bytes
!interface GigabitEthernet0/1
switchport access vlan 10
negotiation auto
channel-group 2 mode on
end
rface gigabitEthernet 0/2
Building configuration...
Current configuration : 106 bytes
!
interface GigabitEthernet0/2
switchport access vlan 10
negotiation auto
channel-group 2 mode on
end
VLAN情報変えると、下記ログのとおりCDPで検知するようです。
*Dec 18 07:05:43.340: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet0/2 (10), with test2 GigabitEthernet0/2 (1).
【設定削除】
物理ポートから「channel-group」を削除すると、PortChannelがDownします。
（削除はされません）→no portchannelで削除可能
Dec 18 07:10:38.132: %LINK-3-UPDOWN: Interface Port-channel1, changed state to down
*Dec 18 07:10:39.132: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to downg
ポートチャネルを削除すると、束ねていた物理IFがshutされるようです。
test1(config)#no interface port-channel 1
*Dec 18 07:44:27.922: %LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to administratively down
*Dec 18 07:44:27.945: %LINK-5-CHANGED: Interface GigabitEthernet0/2, changed state to administratively down
