SRX Services Gateway
SRX Services Gateway

Proxy-Arp vs interface address

‎01-25-2018 04:28 AM

Can anyone explain me the difference between proxy-arp or a address assigned to a interface?

 

I hava a SRX 300 connected to a /28 subnet

I want to 1:1 nat some adresses to the inside

The GE-0/0/0.0 interface has an address of 1.1.1.1/28

The GE-0/0/5.0 interface has an address of 192.168.1.2/24

 

For example i 1:1 nat the following 2 addresses 1.1.1.2 <-> 192.168.1.2

 

Now i have 2 options.

1) Proxy-Arp 1.1.1.2 on interface GE-0/0/0.0

2) Add address 1.1.1.2 on interface GE-0/0/0.0

 

Both options works but what is technically the difference between those 2 ?

 

Regards,

 

Robbert

 

 

 

2 REPLIES 2
SRX Services Gateway

Re: Proxy-Arp vs interface address

‎01-25-2018 05:45 AM

Here is good example of when to configure Proxy ARP:

https://kb.juniper.net/InfoCenter/index?page=content&id=KB21785

 

 

/Karan Dhanak
# Please mark my solution as accepted if it helped, Kudos are appreciated as well.

SRX Services Gateway

Re: Proxy-Arp vs interface address

‎01-25-2018 05:47 AM

and the interface address add would be more of static approach

 

/Karan Dhanak
# Please mark my solution as accepted if it helped, Kudos are appreciated as well.