FRANK_SUI

导航

port-channel和channel-group

cisco交换机上的链路聚合


   2层 ethernet channel


  (interface)#channel-group number mode {on | auto [no-silent]|desirable [no-silent]}
  on 使用EthernetChannel 但不发送pagp分组
  off 禁用EthernetChannel

  desirable    交换机主动要求形成一个EthernetChannel 发送pagp分组
  auto            交换机被动形成一个EthernetChannel 不发送pagp分组 默认取值
  往往可能EthernetChannel的一端(一台服务器或者是网络分析仪)#没有产生pagp分组或者说是保持
  “沉默",可以使用关键字silent在15秒的延迟之后,让对端成为EthernetChannel.起对端为”沉默“
  使用non-silent关键字则要求在激活EthernetChannel之前现进行pagp协商、
  Catalyst 2900    3500xl 平台上没有pagp 只有 on off不进行协商
  ios    (global)# port-channel load-balance    method
  ——源地址      src-ip
  ——目的地址 dst-ip
  ——源和目的    src-dst-ip
  ——源mac地址 src-mac
  ——目的mac地址 dst-mac
  ——源和目的mac src-dst-mac
  ——源端口号 src-port
  ——目的端口号 dst-port
  ——源和目的端口号 src-dst-port
  example

(global)# interface fastethernet 4/1
(interface)#channel-group 100 mode desirable non-silent
(global)# interface fastethernet 4/2
(interface)#channel-group 100 mode desirable non-silent
(global)# interface fastethernet 5/1
(interface)#channel-group 100 mode desirable non-silent
(global)# interface fastethernet 5/2
(interface)#channel-group 100 mode desirable non-silent
(global)#port-channel load-balance src-dst-ip
show etherchannel [channel-group] load-balance
  绑定到一起的端口必须具有相同的属性如:速度 双工模式 vlan 干路模式 允许的vlan范围


  3层 etherchannel


  1创建逻辑端口通道
  interface port-channel number
  2.配置端口通道上的协议信息
  ip address address netmask
  3.把物理3层接口分配给通道
  interface type mod/port
  选择的端口必须是一个3层接口     no switchport
  4.删除任何协议地址
  no ip address
  5.把接口分配给通道组
  channel-group number mode {auto |dusirable |on}
  6.核实接口已经启用
  no shutdown
  7核实通道
  show ethernetchannel number port-channel
  show interface type number etherchannel
  show ethernetchannel summary
  example
  分布层交换机上

(config)#interface channel-group 1
(config-if)#ip address 192.168.1.1 255.255.255.0
(config-if)#interface gigabitethernet 1/1
(config-if)#no switchport
(config-if)#no ip address
(config-if)#channel-group 1 mod on
(config-if)#no shutdown
(config-)#interface 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
  接入层交换机(3500xl)#

(config)#interface gigabitethernet 0/1
(config-if)#port group 1
(config)#interface gigabitethernet 0/2
(config-if)#port group 1
(config)#end
#copy run start
  我的试验3750配置实例    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 interfaces 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 - Interface 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

配置实例

Catalyst 2950 Switch
Cat2950#
Cat2950#conf t
Cat2950(config)#vtp mode server
Cat2950(config)#vtp domain cisco
Cat2950(config)#vlan 10
Cat2950(config-vlan)#exit
Cat2950(config)#vlan 20
Cat2950(config-vlan)#exit
Cat2950(config)#int range fa0/5 - 14
Cat2950(config-if-range)#switchport access vlan 10
Cat2950(config-if-range)#exit
Cat2950(config)#int range fa0/15 - 26
Cat2950(config-if-range)#switchport access vlan 20
Cat2950(config-if-range)#^Z
Cat2950#conf t
Cat2950(config)#int vlan 10
Cat2950(config-if)#ip address 10.10.10.10 255.255.255.0
Cat2950(config-if)#no shutdown
Cat2950(config-if)#^Z
Cat2950#conf t
Cat2950(config)#ip default-gateway 10.10.10.1
Cat2950(config)#int port-channel 1
Cat2950(config-if)#exit
Cat2950(config)#int fa0/2
Cat2950(config-if)#channel-group 1 mode on
Cat2950(config-if)#exit
Cat2950(config)#
Cat2950(config)#int fa0/3
Cat2950(config-if)#channel-group 1 mode on
Cat2950(config-if)#exit
Cat2950(config)#int port-channel 1
Cat2950(config-if)#switchport mode trunk
Cat2950(config-if)#switchport trunk native vlan 10
Cat2950(config-if)#^Z
Cisco7200#
Cisco7200#conf t
Cisco7200(config)#int port-channel 1
Cisco7200(config-if)#exit
Cisco7200(config)#int fa3/0
Cisco7200(config-if)#channel-group 1
Cisco7200(config-if)#exit
Cisco7200(config)#
Cisco7200(config)#int fa4/0
Cisco7200(config-if)#channel-group 1
Cisco7200(config-if)#exit
Cisco7200(config)#int port-channel 1.10
Cisco7200(config-subif)#encapsulation dot1Q 10 native
Cisco7200(config-subif)#ip address 10.10.10.1 255.255.255.0
Cisco7200(config-subif)#exit
Cisco7200(config)#int port-channel 1.20
Cisco7200(config-subif)#encapsulation dot1Q 20
Cisco7200(config-subif)#ip address 10.10.11.1 255.255.255.0
Cisco7200(config-subif)#exit
Cisco7200(config)#exit

port- channel是端合聚合,打个比方:可以让你将4根100M的普通网线相当于捆绑成一根400M的特殊网线,将两端的交换机连在一起。省钱吧,哈。。。 channel-group是指聚合组,假设你正在想实现Port-channel,你配置中需要将交换机上的那4个端口划入到同一个channel- group之中。明白了吧! trunk是另一种技术,说白了就是用来让你在同一根网线中同时能够传输若干VLAN的数据包,你要将这跟网线两端的交换机端口都设置成trunk模式, 而不是一般的access模式。 port-channel 和 trunk 之间没有什么必然联系,当然你可以这样使用:先将若干根网线聚合起来(也就是做成port-channel),再将该 port-channel 配置为 trunk 模式。

posted on 2013-09-09 15:12  Mr·Sui  阅读(3032)  评论(0)    收藏  举报