[j-nsp] load balancing between juniper routers for unequal cost path

[Leigh Porter]

Also with GRE tunnels you may run into MTU problems. At last with MPLS
you won't have that pro


Chuck Anderson wrote:
> On Thu, Nov 08, 2007 at 08:39:23AM -0800, Hamid Ahmed wrote:
>
>   
>>   2) You are giving the explanation for equal cost paths. However in 
>>   my case there are two unequal cost paths. So my question still how 
>>   can u do that in using unequal cost paths ?
>>     
>
>   
>>   3) Please explain when u say the following:
>>   "What you will need to do is create 2 different RSVP Signaled LSPs
>>  towards the router which you want to "add more traffic", then you need to  export these 2 LSPs in OSPF (not turn OSPF off!) so that the routing protocol  can see and use these 2 new paths. In the end, you will have 2 equals paths going in 1 direction, and a
>>  single path in the other.  If you need to move more traffic, then simply add a  3rd, 4th, etc LSP."
>>     
>
>   
>>   4) The above discussion is for when we are doing work within MPLS. 
>>   Now in my case my intended traffic (Voice) does not use 
>>   MPLS(however MPLS is enabled but for some other traffic like 
>>   sigtran and O/M). OSPF is there as IGP and i need to load balance 
>>   my intended traffic using the unequal cost path. I have an idea 
>>   taht i create 2 x static GRE tunnels from one end to the other. My 
>>   question can GRE tunnel override OSPF as that would be purely 
>>   static routing and whatever goes with the tunnels would be just 
>>   IP-payload.
>>     
>
> He is saying to expand your use of MPLS to provide the solution to 
> your un-equal multipath situation.  You would be using MPLS "tunnels" 
> a.k.a. LSPs to provide the solution.  I suppose GRE tunnels could work 
> too, but since you already have MPLS set up, you might as well expand 
> your use of it to cover this case as well.
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