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Physical interfaces (interface VLANs or subinterfaces depending on your configuration) &nbsp;on R1 and R2 that are connected to 3750 switches need to be configured in the same IP address range and need to be in the same VLAN(s). Here in example physical interface Fa0/1.<br />
R1<br />

<pre><code id="code-20-42296972-1">interface fa0/1
 ip address 192.168.0.2 255.255.255.0
 standby 1 ip 192.168.0.1</code></pre>
R2<br />

<pre><code id="code-20-42296972-2">interface fa0/1
 ip address 192.168.0.3 255.255.255.0
 standby 1 ip 192.168.0.1</code></pre>
You can also configure priority, interface tracking and/or IP SLA with preemption so you can check if upstream devices are responding properly and to switch active router to other node.<br />
<a href="https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/HSRP-Version-2.html" rel="ugc">Basic Configuration Example: HSRP</a><br />
<a href="https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/fhp-hsrp.html" rel="ugc">More configuration detailes for HSRP </a>
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Physical interfaces (interface VLANs or subinterfaces depending on your configuration)  on R1 and R2 that are connected to 3750 switches need to be configured in the same IP address range and need to be in the same VLAN(s). Here in example physical interface Fa0/1.
R1


interface fa0/1
 ip address 192.168.0.2 255.255.255.0
 standby 1 ip 192.168.0.1

R2


interface fa0/1
 ip address 192.168.0.3 255.255.255.0
 standby 1 ip 192.168.0.1

You can also configure priority, interface tracking and/or IP SLA with preemption so you can check if upstream devices are responding properly and to switch active router to other node.
Basic Configuration Example: HSRP [https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/HSRP-Version-2.html]
More configuration detailes for HSRP [https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp_fhrp/configuration/15-s/fhp-15-s-book/fhp-hsrp.html]

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Hi Guys <br />
<br />
I have Two Cisco Router r1,r2 both of them have the same getaway , i need to Achieve the high availability between the two so if r1 down .the r2 should be up and replace r1 <br />
<br />
see attached the network design <br />
<br />
thanks <br />
<br />
<a href="https://filedb.experts-exchange.com/incoming/2017/09_w37/1193729/78_97.jpg" target="_blank" title="Simple network Diagram (33 KB)"><img alt="Simple network Diagram" class="file-block lazyload" style="max-width: 760px;" data-src="https://filedb.experts-exchange.com/incoming/2017/09_w37/1193729/78_97.jpg" /></a>
</div>
</div>


78_97.jpg

Hi Guys 

I have Two Cisco Router r1,r2 both of them have the same getaway , i need to Achieve the high availability between the two so if r1 down .the r2 should be up and replace r1 

see attached the network design 

thanks 



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