[j-nsp] SRX src nat pool subnet load sharing

[Ben Hammadi, Kayssar (NSN - TN/Tunis)]

Dears , 

  I need some details about SRX src nat pool @ allocation , We are using
a proxy that go oout with only one src @ and we use oversubscription nat
on SRX using a pool that contain 2 subnets : 
   
    as per my understanding of the normal SRX behavior the second subnet
will never be used nether any other @ in the first subnet (except the
first) since the proxy cannot open more than 65535 session right ? 

    If our proxy use a second src @  do we have a chance that junos nat
with the second subnet ? 

    Suppose that junos start to nat with ip1 port 1000 then the next
session will have ip2 port 1001 , meanwhile the session ip1 port 1000 is
closed , does junos reallocate the port 1000 or continue to 1002 untill
the subnet is exhausted ?

    Can we change the junos default dehavior to use both subnets ? 

Br.

BEN HAMMADI Kayssar
 
NOKIA SIEMENS NETWORKS
Lead Engineer -BroadBand Connectivity
JNCIE (#471), CCIP