Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario descargar pdf (Pagina 39)

White Paper

current role of the higher-priority virtual switch is in standby mode, then the current active virtual switch performs a

SSO switchover after a preconfigured period of time so that the virtual switch with the higher switch priority takes over

as the active virtual switch (Figure 24).

Figure 24. Virtual Switch Preemption

You should enable Switch Preemption only on the switch that has the higher switch priority. With the following

command you can enable this function under the virtual switch configuration mode. You can specify an optional timer

value from 5 to 20 minutes, where this number represents the number of minutes the current active virtual switch

waits after it establishes communication with the peer standby virtual switch through the VSL. The default and

minimum time is set to 5 minutes. This timer is important, because it takes a variable amount of time after VSL

initialization to initialize the remaining modules and establish network connectivity.

vss#conf t

Enter configuration commands, one per line. End with CNTL/Z.

vss(config)#switch virtual domain 10

vss(config-vs-domain)#switch 2 preempt 7

vss(config-vs-domain)#^Z

vss#

Use the following command to verify the configuration:

vss#show switch virtual role

Switch Switch Status Preempt Priority Role Session ID

Number Oper(Conf) Oper(Conf) Local Remote

------------------------------------------------------------------

LOCAL 1 UP FALSE(N ) 100(100) ACTIVE 0 0

REMOTE 2 UP TRUE (Y*) 120(120) STANDBY 1170 1366

Standby operational preempt timer(switch 2): 7 minutes

Standby will takeover as active in approx. : 4 minutes

Standby configured preempt timer(switch 2): 7 minutes

In dual-active recovery mode: No

Preemption should only be configured if there is a compelling requirement to do so. If preemption is enabled, the

convergence time will be longer due to the fact that the switch will experience an additional reload. This additional

reload is necessary in order for the new switch to go from an active to a standby state.

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 61 62

Sin comentarios

Cisco WS-X6708-10G-3CXL= - 10 Gigabit Ethernet Module Manual de usuario Pagina 39