Link State Tracking in Blade Deployments

刀片服务器两个NIC接口可互为备份，通过teaming实现切换，但teaming只能检测NIC接口或其直连链路状态。

如果刀片内置交换机模块（CISCO）上行链路DOWN，则NIC的切换无法进行。

所以我们需要在交换模块上设置link state tracking配合teaming。

具体配置如下：

link state track 1

int port-channel 1

  uplink to network backbone

  link state group 1 upstream

int g0/1

  description port group member for uplink to network backbone such as 6509

  channel-group 1 mode on

int g0/2

  description port group member for uplink to network backbone such as 6509

  channel-group 1 mode on

int g0/10

  description connected to the blade server NIC

  sw mo ac

  sw ac vl 101

  link state group 1 downstream

  spanning-tree portfast

验证

show link state group 1

show link state group detail