10-08-2009 07:02 AM - edited 03-04-2019 06:18 AM
Hi,
Please find the attached. I am having 2 router-A & B, running in HSRP mode & both connecting to my Database server via Different MPLS ISP. Need to know , if my Router-A links goes down, how do my traffic will move via router-B & once the link is up,it should shift to normal.ie. on router A.
Also if i use a load balancer,will it be possible that what traffic travel via Rtr-A should take the same path. I mean reverse path via Rtr-A with load balancer.
10-08-2009 07:16 AM
It will move over via your routing protocol. If I understand your LB question, yes it can go back via the same link it cam in on. Again this would be dependent on your routing protocol. You may need to make some adjustments so traffic flows the way you want.
10-08-2009 08:07 AM
Sorry to inform you,My Branches are 800, 400 will go via Rtr-A & other 400 By Rtr-B. if my Router-A goes Down, then traffice will move via Rtr-B. So the load on router-B will increase i.e. CPU,memory utilization & also routing table size would be increase , what could be other possible solutions.
10-08-2009 08:54 AM
Hi, gureshi_asrar
>>how do my traffic will move via router-B & once the link is up
If your igp is ospf, you can change the cost or the distance to make it load balance, and the traffic will move back to router-A once it comes back,
hope it helps
Yang
10-08-2009 09:22 AM
Anther solution, I gave the higher standy priority for Router-A, so once the
Router-A comes back, it will be the active one,
Router-B#sh run int e0
Building configuration...
Current configuration : 162 bytes
!
interface Ethernet0
ip address 1.1.123.1 255.255.255.0
standby 1 ip 1.1.123.254
standby 1 preempt
standby 1 name For_server
standby 1 track Ethernet0
end
Router-A#sh run int e0/0
Building configuration...
Current configuration : 203 bytes
!
interface Ethernet0/0
ip address 1.1.123.2 255.255.255.0
half-duplex
standby 1 ip 1.1.123.254
standby 1 priority 105
standby 1 preempt
standby 1 name For_server
standby 1 track Ethernet0/0
end
hope this helps
Yang
10-08-2009 12:35 PM
Policy based routing would work here.
http://www.cisco.com/en/US/products/ps6599/products_white_paper09186a00800a4409.shtml
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