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Module 6: Redundancy
 
6.1.2 Implementing redundant supervisor engines in Catalyst switches

Router#show module

6.2.1 Router redundancy operation

Router#ip gdp irdp

6.2.2 ICMP Router Discovery Protocol (IRDP)

Router#show ip irdp
Router#[no] debug ip icmp

6.2.3 Hot Standby Router Protocol (HSRP)

Router#show ip irdp
Router#[no] debug ip icmp

6.2.4 Virtual Router Redundancy Protocol (VRRP)

Router#show vrrp [brief | group]
Router#show vrrp interface type number [brief]

Router#debug standby
Router#debug condition standby interface group
Router#debug vrrp all
Router#debug vrrp error
Router#debug vrrp events
Router#debug vrrp packets
Router#debug vrrp state

6.2.5 Gateway Load Balancing Protocol (GLBP)

Router#debug glbp errors
Router#debug glbp events
Router#debug glbp packets
Router#debug glbp terse

6.2.7 Gateway Load Balancing Protocol (GLBP)

Switch#no debug ip slb all|cons|dfp|icmp|reals
Router#show ip slb conns [vserver virtserver-name] [client ip-address] [detail]
Router#show ip slb dfp [agent ip_addr port] [detail] [weights]
Router#show ip slb reals [vserver virtserver-name] [detail]
Router#show ip slb serverfarms [name serverfarm-name] [detail]
Router#show ip slb stats
Router#show ip slb sticky [client ip-address]
Router#show ip slb vservers [name virtserver-name] [detail]

6.3.2 The virtual router MAC address

Router#show standby

6.4.1 Configuring HSRP

Router(config-if)#standby group-number ip virtual-ip-address
Router(config-if)#standby ip
Router(config-if)#no standby group ip

6.4.3 HSRP standby priority

Router(config-if)#standby group-number priority priority-value

6.4.4 HSRP standby preempt

Router(config-if)#standby group-number preempt

6.4.5 HSRP hello timers

Router(config-if)#standby group-number timers hellotime holdtime
Router(config-if)#no standby group timers

6.4.6 HSRP interface tracking

Router(config-if)#standby group-number track type number interface-priority

6.4.7 Verify HSRP configuration

Router#show standby type-number group brief
Router#show standby brief

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