Etherchannel试图通过禁用的端口转发通信量
Etherchannel试图通过禁用的端口转发通信量
提问于 2015-06-08 20:08:29
我正在对连接到由三个3750 G开关组成的堆栈的WLC的间歇性连接问题进行故障排除。开关的部件编号和软件版本如下：
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
1 12 WS-C3750G-12S 12.2(35)SE5 C3750-IPBASE-M
* 2 52 WS-C3750G-48TS 12.2(35)SE5 C3750-IPBASE-M
3 52 WS-C3750G-48TS 12.2(35)SE5 C3750-IPBASE-MWLC已启用滞后，因此在堆栈中配置了Po4，其中包括4个端口，以连接WLC的4个物理端口：
SW#show etherchannel 4 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: 4
Number of aggregators: 4
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
4 Po4(SU) - Gi2/0/51(P) Gi2/0/52(P) Gi3/0/51(P)
Gi3/0/52(P)
SW#物理接口和portchannel接口的配置如下：
interface GigabitEthernet2/0/51
switchport trunk encapsulation dot1q
switchport mode trunk
mls qos trust cos
channel-group 4 mode on
end
!
interface GigabitEthernet2/0/52
switchport trunk encapsulation dot1q
switchport mode trunk
mls qos trust cos
channel-group 4 mode on
end
!
interface GigabitEthernet3/0/51
switchport trunk encapsulation dot1q
switchport mode trunk
mls qos trust cos
channel-group 4 mode on
end
!
interface GigabitEthernet3/0/52
switchport trunk encapsulation dot1q
switchport mode trunk
mls qos trust cos
channel-group 4 mode on
end
!
interface Port-channel4
switchport trunk encapsulation dot1q
switchport mode trunk
endEthernchannel负载平衡是基于源IP地址和目标IP地址进行的：
SW#show etherchannel load-balance
EtherChannel Load-Balancing Configuration:
src-dst-ip
EtherChannel Load-Balancing Addresses Used Per-Protocol:
Non-IP: Source XOR Destination MAC address
IPv4: Source XOR Destination IP address
IPv6: Source XOR Destination IP address
SW#在故障排除过程中，我尝试禁用以太通道的4个端口中的2个，发现有时交换机试图通过禁用的端口转发通信：
SW#show etherchannel 4 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: 4
Number of aggregators: 4
Group Port-channel Protocol Ports
------+-------------+-----------+-----------------------------------------------
4 Po4(SU) - Gi2/0/51(D) Gi2/0/52(D) Gi3/0/51(P)
Gi3/0/52(P)
SW#
SW#
SW#
SW#test etherchannel load-balance interface Po4 ip 10.0.1.254 10.0.1.251
Would select Gi2/0/52 of Po4
SW#我理解以太通道负载平衡不应该试图通过关闭或禁用端口转发通信，即使端口被配置为以太通道的一部分。
你们中有谁知道这种行为的好原因吗？
回答 1
Network Engineering用户
发布于 2015-07-08 10:25:24
交通仍将通过这两个港口。
确保：
速度/双工匹配
协议匹配
一方发起协议通信
页面原文内容由Network Engineering提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://networkengineering.stackexchange.com/questions/19052
复制相关文章
相似问题
腾讯云开发者
