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BGP - Same IP Segments in 2 DC

Posted on 2013-01-13
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Last Modified: 2015-08-23
I have 2 DC. I want to have the same IP Segment in both the locations.
For ex the segment is 10.10.10.0/24
Both the DC will be having this segment.
The primary servers in the primary DC will have IP 10.10.10.1
The secondary servers in the backup DC will also have IP 10.10.10.2
In case my primary server is down the users will be able to access the server in backup DC with out changing the IP Address.

Let me know can this be achieved via BGP as routing protocol.
Let me know how to achieve this.
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Question by:SrikantRajeev
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5 Comments
 
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Expert Comment

by:Sandeep Gupta
ID: 38773591
first thing BGP is not a routing protocol.

You can simply do HSRP..I am giving you an example

Primary DC LAN interface

interface <<LAN>>
 description primary DC LAN
 ip address 10.10.10.1 255.255.255.0
 no ip proxy-arp
 standby 0 ip 10.10.10.3
 standby 0 priority 200
 standby 0 preempt
 standby 0 track <<Primary DC WAN interface>> decrement 20
 no shut

Secondary DC LAN interface

!
interface <<LAN>>
 description Secandary DC LAN
 ip address 10.10.10.2 255.255.255.0
 standby 0 ip 10.10.10.3
 standby 0 preempt
 no snmp trap link-status
 no shut
!
note: I took 10.10.10.3 as HSRP IP. You can take any IP from same subnet as HSRP IP but do not use it anywhere else.
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Accepted Solution

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SrikantRajeev earned 0 total points
ID: 38824060
Will HSRP works over the WAN between 2 DC in different locations
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Expert Comment

by:Sandeep Gupta
ID: 38825747
nope...
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Author Comment

by:SrikantRajeev
ID: 39080181
i believe Cisco OTV has this feature
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Author Closing Comment

by:SrikantRajeev
ID: 40942719
Thanks
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