一、2層 ethernet channel
（inte***ce)#channel-group number mode
on 使用ethernetchannel 但不傳送pagp分組
off 禁用ethernetchannel
desirable 交換機主動要求形成乙個ethernetchannel 傳送pagp分組
auto 交換機被動形成乙個ethernetchannel 不傳送pagp分組 預設取值
往往可能ethernetchannel的一端（一台伺服器或者是網路分析儀)#沒有產生pagp分組或者說是保持
「沉默"，可以使用關鍵字silent在15秒的延遲之後，讓對端成為ethernetchannel.起對端為」沉默「
使用non－silent關鍵字則要求在啟用ethernetchannel之前現進行pagp協商、
catalyst 2900 3500xl 平台上沒有pagp 只有 on off不進行協商
ios （global)# port-channel load-balance method
——源位址 src-ip
——目的位址 dst－ip
——源和目的 src－dst－ip
——源mac位址 src－mac
——目的mac位址 dst－mac
——源和目的mac src－dst－mac
——源埠號 src－port
——目的埠號 dst-port
——源和目的埠號 src-dst-port
example
(global)# inte***ce fastethernet 4/1
(inte***ce)#channel-group 100 mode desirable non-silent
(global)# inte***ce fastethernet 4/2
(inte***ce)#channel-group 100 mode desirable non-silent
(global)# inte***ce fastethernet 5/1
(inte***ce)#channel-group 100 mode desirable non-silent
(global)# inte***ce fastethernet 5/2
(inte***ce)#channel-group 100 mode desirable non-silent
(global)#port-channel load-balance src-dst-ip
show etherchannel [channel-group] load-balance
繫結到一起的埠必須具有相同的屬性如：速度 雙工模式 vlan 幹路模式 允許的vlan範圍
3層 etherchannel
1建立邏輯埠通道
inte***ce port－channel number
2.配置埠通道上的協議資訊
ip address address netmask
3.把物理3層介面分配給通道
inte***ce type mod/port
選擇的埠必須是乙個3層介面 no switchport
4.刪除任何協議位址
no ip address
5.把介面分配給通道組
channel-group number mode
6.核實介面已經啟用
no shutdown
7核實通道
show ethernetchannel number port-channel
show inte***ce type number etherchannel
show ethernetchannel summary
example
分布層交換機上
(config)#inte***ce channel-group 1
(config-if)#ip address 192.168.1.1 255.255.255.0
(config-if)#inte***ce gigabitethernet 1/1
(config-if)#no switchport
(config-if)#no ip address
(config-if)#channel-group 1 mod on
(config-if)#no shutdown
(config-)#inte***ce gigabitethernet 1/2
(config-if)#no switchport
(config-if)#no ip address
(config-if)#channel-group 1 mode on
(config-if)#end
copy run start
接入層交換機（3500xl)#
(config)#inte***ce gigabitethernet 0/1
(config-if)#port group 1
(config)#inte***ce gigabitethernet 0/2
(config-if)#port group 1
(config)#end
#copy run start
我的試驗3750配置例項 castlyst 3750g
switch#config t
switch(config)#int gigabitethernet 1/0/23
switch(config-if)#channel-group 10 mode ?
active enable lacp unconditionally
auto enable pagp only if a pagp device is detected
desirable enable pagp unconditionally
on enable etherchannel only
passive enable lacp only if a lacp device is detected
switch(config-if)#channel-group 10 mode desirable non-silent
switch(config)#int gigabitethernet 1/0/24
switch(config-if)#channel-group 10 mode desirable non-silent
switch(config)#port-channel ?
load-balance load balancing method
switch(config)#port-channel load-balance ?
dst-ip dst ip addr
dst-mac dst mac addr
src-dst-ip src xor dst ip addr
src-dst-mac src xor dst mac addr
src-ip src ip addr
src-mac src mac addr
switch(config)#port-channel load-balance src-dst-ip
switch#write
switch#show inte***ces gigabitethernet 1/0/23 etherchannel
port state = up sngl-port-bndl mstr not-in-bndl
channel group = 10 mode = desirable-nonsl gcchange = 0
port-channel = null gc = 0x000a0001 pseudo port-channel = po10
port index = 0 load = 0x00 protocol = pagp
flags: s - device is sending slow hello. c - device is in consistent state.
a - device is in auto mode. p - device learns on physical port.
d - pagp is down.
timers: h - hello timer is running. q - quit timer is running.
s - switching timer is running. i - inte***ce timer is running.
local information:
hello partner pagp learning group
port flags state timers interval count priority method ifindex
gi1/0/23 u4/s4 h 30s 0 128 any 10123
age of the port in the current state: 00d:00h:03m:30s
switch#show etherchannel summary
flags: d - down p - 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
u - unsuitable for bundling
w - waiting to be aggregated
d - default port
number of channel-groups in use: 1
number of aggregators: 1
group port-channel protocol ports
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