VMware网络冗余及link state tracking考虑

wtxnpw

　　VMware highly recommends deploying the mesh topology shown on the left  that provides highly reliable redundant design, and it doesn’t need link  state tracking feature.

　　If link state tracking capability is not available on physical  switches, and there are no redundant paths available in the design, then  customers can make use of Beacon Probing featur. Beacon probing is most useful with three or more uplinks in a team.
　　Configure Link State Tracking

　　
Interfaces connected to servers are referred to as  downstream interfaces, and interfaces connected to distribution  switches and network devices are referred to as upstream interfaces.  When link-state tracking is enabled, the downstream interfaces are bound  to the upstream interfaces. After a set of downstream ports are  associated to a set of upstream ports, if all of the upstream ports  become unavailable, link-state tracking automatically puts the  associated downstream ports in an error-disabled state. This causes the  primary interface of the server to failover to the secondary interface.
Command
Purpose
Step 1
configure terminal
Enters global configuration mode.
Step 1
feature lst
Enables link-state track feature.
Step 2
link state track number
Creates a link-state group, and enable link-state tracking. The group number can be 1 to 6. The default is 1.
Step 3
interface interface-id
Specifies a physical interface or range of interfaces to configure, and enters interface configuration mode.
Valid interfaces include switch ports in access or trunk mode (IEEE  802.1q), routed ports, or multiple ports bundled into an EtherChannel  interface (static or LACP), that is also in trunk mode.
Step 4
link state group [number] {upstream |  downstream}
Specifies a link-state group, and configures the interface as either an  upstream or downstream interface in the group. The group number can be 1  to 6. The default is 1.
Step 5
end
Returns to privileged EXEC mode.
Step 6
show running-config
Verifies your entries.
Step 7
copy running-config startup-config
(Optional) Saves your entries in the configuration file.