[j-nsp] Configuring Per-Packet Load Balancing

[Hannes Gredler]

Mesut Mutlu wrote:
> Hi,
> 
>  First of all thanks for your help. 
>  I think If I made this configuration it will be
> generally used by the router. I need to explain that I
> just want to configure load-balance per-packet
> configuration only for a specific peer not for all
> other peers with who I have option to make this kind
> of configuration. 

correct - below configuration will enable hash-based load-balancing
for all IGP equal cost routes in the master routing tables;
note that the keyword(s) here is "IGP equal cost" -
if you have e.g. _two_ eBGP peerings to your neighbor AS
then this will not help much (as only one next-hop)
per eBGP session is available in that scenario ...

it will work however if you have _one_ EBGP session between
your loopbacks and a static route to the remote-loopback
holding equal-cost next-hops.

so in other words even if you apply the lbpp policy globaly
to inet.0 it may have no impact unless you supply equal-cost
forwarding next-hops.

 > I know routes which are advertised
> by this peer to me using BGP. Is it possible a
> specific configuration to be made only for a specific
> peer by using routes advertised by him or by using
> something else known about this peer. 
>  Thanks again.
>  Yours Sincerely,
>    Mesut MUTLU


> --- Hannes Gredler <hannes at juniper.net> wrote:
> 
> 
>>make sure you have the following config:
>>
>>routing-options {
>>     forwarding-table {
>>         export lbpp;
>>     }
>>}
>>policy-options {
>>     policy-statement lbpp {
>>         then {
>>             load-balance per-packet;
>>         }
>>     }
>>}
>>
>>then the router should install more than one [upto
>>16]
>>forwarding nexthops;
>>
>>--
>>
>>you can check if load-balancing is working using
>>a "show route forwarding-table" and check
>>if the route in question has a
>>"ulst" (=unilist) entry attached;
>>
>>HTH,
>>
>>/hannes
>>
>>Mesut Mutlu wrote:
>>
>>>Hi all,
>>>
>>> I have a bit trouble configuring per-packet
>>>load-balancing, for that reason I need your help
>>
>>about
>>
>>>some topics. 
>>> How a per-packet load-balancing can be configured
>>
>>>for packets which will be sent to a directly
>>
>>connected
>>
>>>peer router knowing routes advertised by and which
>>>belongs to this peer.
>>> In [policy-options policy-statement] using "from
>>>statement" is it posible with giving routes of the
>>>peer router to configure per-packet load balancing
>>
>>or
>>
>>>is there any other way to manage configuration.
>>
>>Please
>>
>>>send me configuration examples and explanation
>>
>>about
>>
>>>this topic if you have.
>>> Thanks a lot for you help. 
>>>Have a nice day.
>>> 
>>>
>>>
>>>	
>>>		
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>>>http://mail.yahoo.com
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>>
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>>
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>>
> 
> 
> 
> 
> 		
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