有没有朋友做过Summit Switch & Cisco Etherchannel的连接.
查了CCO, cisco etherchannel要和第三方的SWITCH建立Etherchannel的连接,要用LACP.是基于IEEE802.3AD的标准.
要连接的是SUMMIT5i,从5i的Feature上看是支持IEEE 802.1ad compatible link aggregation 的(CISCO叫Etherchanne,SUMMIT叫link aggregation,也叫sharing-group),但我们的firmware是6.xx的,对802.1AD是draft,有查了新的firmware是7.0.0,是支持IEEE 802.1ad 的.
实验成功了.虽然summit5i和cisco etherchannel之间有很多不同,但经过一些实验,得到好的结果.
[7600]
-----etherchannel(fastether x 4)
[summit5i]
-----fastether
[7200]
*****************************************************************************
先说[summit5i]的设定
#
#这4个port连着[7600]的1,2,3,4 port
configure port 1 auto off speed 100 duplex full
configure port 2 auto off speed 100 duplex full
configure port 3 auto off speed 100 duplex full
configure port 4 auto off speed 100 duplex full
#
#port8连着的是7200的FE1/0
configure port 8 auto off speed 100 duplex full
#
#summit的sharing-grouping
enable sharing 1 grouping 1,2,3,4 algorithm round-robin
Summit5iTx:45 # sh port sh
Next possible completions:
<cr>
Summit5iTx:45 # sh port sharing
Load Sharing Monitor
Config Current Ld Share Ld Share Link Link
Master Master Algorithm Group Status Ups
==========================================================
1 1 r 1 A 11
r 2 A 9
r 3 A 26
r 4 A 9
Flags: Link Status: A-Active, R-Ready, D-Disabled, NP-Not Present
Ld Sh Algo: p-port based, a-address based, r-round robin
*****************************************************************
[7200]的设定(没什么非凡,只是为了测试而已)
inter loop0
ip address 2.2.2.2 255.255.255.0
inter fa0/1
ip address 192.168.1.3 255.255.255.0
duplex full
no shut
router ospf 1
network 192.168.1.3 0.0.0.0 area 0
network 2.2.2.0 0.0.0.255 area 0
***************************************************************
[7600] 的设定
有两种Etherchannel,一种是layer2的,一种是layer3的
(1) layer2 Etherchannel
inter loop0
ip address 1.1.1.1 255.255.255.0
interface range fa3/1 – 4
switchport
switchport mode Access
switchport access vlan 10
channel-group 2 mode on <<<<<<< 注重这里用的是[on],后面再讲其它的Mode
speed 100
duplex full
no shut
no cdp enable
!
no spanning-tree vlan 10 <<<<<主要是关掉不必要的port nego,不了解的朋友不要用
!
inter vlan 10
ip address 192.168.1.1 255.255.255.0
no shut
!
router ospf 1
network 192.168.1.1 0.0.0.0 area 0
network 1.1.1.1 0.0.0.0 area 0
default-information originate always
实际上,在敲完以上的config,你会发现interface Port-channel1已经被路由器自己生成了
!
interface Port-channel 2
no ip address
no logging event link-status
switchport
switchport access vlan 10
switchport mode access
!
Router#sh 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
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
2 Po2(SU) - Fa3/1(P) Fa3/2(P) Fa3/3(P) Fa3/4(P)
Router#
***************************************************************************
(2) layer3 Etherchannel
interface Port-channel 5
ip address 192.168.1.1 255.255.255.0
!
interface range fa3/1 – 4
speed 100
duplex full
no cdp enable
channel-group 5 mode on
no shut
!
router ospf 1
network 192.168.1.1 0.0.0.0 area 0
network 1.1.1.1 0.0.0.0 area 0
default-information originate always
Router#sh 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
Number of channel-groups in use: 1
Number of aggregators: 1
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
5 Po5(RU) - Fa3/1(P) Fa3/2(P) Fa3/3(P) Fa3/4(P)
以上两种etherchannel在CISCO的sweep ping下,都不会丢包.
但是假如你把channel-group 5 mode XX设成了其它象［active,passive］, 都会丢包,更不用说设成了［auto ,desirable］了,summit根本不支持.
简单扼要就这些了.
