Cisco CCNP / BCMSN Exam Tutorial: Transforming The Lively Router In HSRP
To go the BCMSN exam and generate your CCNP certification, you’ve bought to learn HSRP inside of and out. Though the operation and primary commands of HSRP are quite easy, there are numerous critical particulars which might be conveniently missed but are critical in getting HSRP to operate how you wish it to. Permit’s Look into utilizing the priority command properly on both of those the exam and in production networks.
A key value inside the show standby command is the priority. The default is one hundred, and the router with the highest precedence would be the primary HSRP router. We’ll increase the default precedence on R2 and see the effects. R3 is presently the Lively router and R2 the standby, so let’s elevate the priority on R2 and find out what transpires.
R2(config)#interface ethernet0
R2(config-if)#standby 5 priority a hundred and fifty
R2#present standby
Ethernet0 – Team 5
Community condition is Standby, precedence a hundred and fifty
Hellotime 4 sec, holdtime 12 sec
Following hi there sent in 0.896
Virtual IP handle is 172.12.23.ten configured
Active router is 172.12.23.three, precedence 100 expires in eight.072
Standby router is nearby
1 point out changes, final state improve 00:14:24
R2 토토사이트 now has a better priority, but R3 remains the active router. R2 will not likely acquire about because the HSRP Main till http://edition.cnn.com/search/?text=먹튀검증 R3 goes down – OR the preempt choice is configured on R2.
R2(config-if)#standby five precedence a hundred and fifty preempt
1d11h: %STANDBY-6-STATECHANGE: Ethernet0 Group 5 condition Standby -> Active
Regional condition is Active, priority one hundred fifty, could preempt
Following good day despatched in 1.844
Active router is regional
Standby router is 172.12.23.three expires in 10.204
Digital mac deal with is 0000.0c07.ac05
2 state improvements, last point out change 00:00:thirteen
In just a couple seconds, a information appears that the community point out has adjusted from standby to active. Exhibit standby confirms that R2, the community router, has become the Lively router – the main. R3 is currently the standby. Therefore if anybody tells you you have to have a router all the way down to alter the Energetic router, they’re Completely wrong – you just should utilize the preempt possibility on the standby priority command.
A different important Element of HSRP configurations is realizing the best way to alter the MAC tackle of the virtual router, in addition to interface tracking. We’ll have a look at These capabilities in the subsequent Component of my HSRP tutorial!