| l, in this week’s article, I’m going to | | | | prefix and a modified EUI-64 format interface |
| continue my discussion about the Hot Standby | | | | identifier; because, if you don’t use the |
| Router Protocol (HSRP) in an IPv6 environment; | | | | autoconfig keyword with the standby ipv6 |
| by explaining the Cisco IOS interface configuration | | | | command the EUI-64 interface identifier will be |
| mode command named standby ipv6. | | | | created from the relevant HSRP virtual MAC |
| Network administrators (like you) use the | | | | address. |
| standby ipv6 interface configuration mode | | | | Example:router>enablerouter#configure |
| command to active the Hot Standby Router | | | | terminalrouter(config)#interface fastethernet 0 |
| Protocol (HSRP) on a Cisco router’s | | | | 0router(config-if)#standby 1 |
| interface. | | | | ipv6router(config-if)#endrouter#copy run start |
| Below is the correct syntax and example of using | | | | In the above example, the router’s |
| the command: | | | | fastethernet 0/0 interface is being activated for |
| Syntax: standby [group-number] ipv6 | | | | HSRP group 1 and the IPv6 address used by the |
| [link-local-address | autoconfig] | | | | Hot Standby group will be learned using HSRP. |
| The (Optional) group-number argument portion of | | | | If you need to disable HSRP on an interface, type |
| the command; is used to set the HSRP group | | | | the word no in front of the command like |
| number on the interface. (By default the group | | | | you see below:router(config-if)#no standby ipv6 |
| number is 0) | | | | And, if you plan on using the command in an IPv6 |
| The optional link-local-address argument | | | | environment; make sure your Cisco IOS routers |
| portion of the command; is used to set the | | | | are running 12.4(4)T or higher. |
| Link-local address of the Hot Standby router | | | | I hope this article was very informative and |
| interface. | | | | helped you quickly understand the usage of the |
| And, the (Optional) autoconfig keyword portion of | | | | standby ipv6 interface configuration |
| the command; indicates that a link-local address | | | | command. |
| will be generated automatically from the link-local | | | | |