M having a LAB senario and using load balancing.As per load balancing active route should be rotate if destinaton are different(Fast Switchig).Is there any way to know, how my traffice routed.Basically i want to check path when m using fast switching as well as process switching
the topic title of your post is related to OSPF load balancing, is that what your question is about ? Basically, in order to check the fast switching routing table, you can use the command:
show ip cache [prefix mask] [type number]
This will display the routing table cache used to fast switch IP traffic. For OSPF, the following applies:
If there are multiple routes to a network with the same route type and cost, it chooses all the routes to be installed in the routing table, and the router does equal cost load balancing across multiple paths.
ya,quite the same thing .Let suppose m having 2 link with equal cost for same netwok,one of them will show active when type 'sh ip router a.b.c.d'.If m using process switching in that case packet should go through both link so how i can check that my both link equally utilize.Is there any command to check this thing.If m doing tracert or pinging to same network only one route show actvie.
supposed that you have both your equal cost routes installed in your routing table (which you can verify with the 'show ip route' command), the default load-balancing is per-destination, that is probably why you are seeing only one route actually being used. You can change that default behaviour, and configure your interfaces with the 'ip load-sharing per-packet' interface command. Be aware, though, that per-packet load sharing can have implications, too, such as out-of-sequence packets...
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