[j-nsp] SRX FBF issue

Yuriy B. Borysov yokodzun at yokodzun.kiev.ua
Fri Jun 5 12:11:16 EDT 2015


Hello!

I got a strange problem with Filter Based Forwarding on SRX 220.

I have two uplink:

show configuration interfaces ge-0/0/0.14 
description uplink1;
vlan-id 14;
family inet {
    mtu 1500;
    address x.x.x.82/29;
    address x.x.x.85/29;
    address x.x.x.86/29;
}

show configuration interfaces ge-0/0/0.18    
description uplink2;
vlan-id 18;
family inet {
    mtu 1500;
    address y.y.y.114/28;
    address y.y.y.117/28;
}


Default route on ge-0/0/0.14 (x.x.x.81).

I configure destination nat on y.y.y.114:
show security nat destination rule-set port-redirect rule test
match {
    destination-address y.y.y.y/32;
    destination-port 2555;
}
then {
    destination-nat pool test;
}



Run telnet y.y.y.114 2555 and I see a strange picture:

run show security flow session destination-port 2555    
Session ID: 133327, Policy name: untrust-to-trust/11, Timeout: 14, Valid
  In: 213.160.143.26/21722 --> y.y.y.114/2555;tcp, ****If: ge-0/0/0.14****, Pkts: 2, Bytes: 120
  Out: 10.100.0.252/25 --> 213.160.143.26/21722;tcp, If: ge-0/0/0.100, Pkts: 3, Bytes: 180
Total sessions: 1


Why inbound interface is ge-0/0/0.14 but not ge-0/0/0.18???

Thanks!



-- 
WBR, Yuriy B. Borysov
YOKO-UANIC | YOKO-RIPE	


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