Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario descargar pdf (Pagina 43)

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If the standby Virtual Switch contains an in-chassis standby supervisor or in the case of a single supervisor

configuration the hot-standby supervisor engine can reinitialize, it will reload. Upon bootup the chassis proceeds with

VSL initialization and enters into standby chassis role with all its interfaces becoming operational again.

VSL Single-Link Failure

The failure of a single VSL link is discovered by the active supervisor engine, either through a link-down event or

through the failure of periodic VSLP messages sent across the link to check the VSL link state (Figure 29).

Figure 29.

The index values, RBH, and fabric programming for selecting the VSL link will need to be automatically updated to

reflect the removal of a link from the VSL. The active supervisor engine sends all of these messages.

Availability is not affected for those data flows that do not use the VSL. For those traffic flows that use the VSL, traffic

outage is estimated to be approximately 50 to 100 ms. Notice that the duration of time is slightly faster than that for

other multichassis Cisco EtherChannel links because VSL always takes advantage of the adaptive Cisco

EtherChannel load-balancing algorithm.

Single Link Failure Within a Multichassis Cisco EtherChannel Link

The failure of a single link within the multichassis Cisco EtherChannel link that is not the last link connecting to a

chassis is recognized by either the multichassis Cisco EtherChannel link control protocol (PAgP or LACP) or the link-

down event (Figure 30).

Figure 30.

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Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario Pagina 43