VMware网络冗余及link state tracking考虑
VMware highly recommends deploying the mesh topology shown on the leftthat provides highly reliable redundant design, and it doesn’t need linkstate tracking feature.If link state tracking capability is not available on physicalswitches, and there are no redundant paths available in the design, thencustomers 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 asdownstream interfaces, and interfaces connected to distributionswitches and network devices are referred to as upstream interfaces.When link-state tracking is enabled, the downstream interfaces are boundto the upstream interfaces. After a set of downstream ports areassociated to a set of upstream ports, if all of the upstream portsbecome unavailable, link-state tracking automatically puts theassociated downstream ports in an error-disabled state. This causes theprimary 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 (IEEE802.1q), routed ports, or multiple ports bundled into an EtherChannelinterface (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 anupstream or downstream interface in the group. The group number can be 1to 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.
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