What is local proxy ARP?
Proxy ARP is a technique in which a router on a given network answers ARP requests intended for another node located on another network. Local proxy ARP – Allows the 7705 SAR to respond to ARP requests for an IP address that belongs to a subnet assigned to the interface receiving the request.
What is proxy ARP Juniper?
Understanding Proxy ARP. You can configure proxy Address Resolution Protocol (ARP) to enable the switch to respond to ARP queries for network addresses by offering its own Ethernet media access control (MAC) address. With proxy ARP enabled, the switch captures and routes traffic to the intended destination.
What is proxy ARP SRX?
It will send an ARP request for the IP address 1.1. 1.2. If Proxy ARP is not configured on the SRX device, the SRX device will not reply to the ARP request as it does not have the IP address configured on the interface ge-0/0/0.0. The ARP request will time out and the packet will be dropped at the upstream router.
Why proxy ARP is needed?
Proxy ARP can be used in a network where clients placed on different physical networks are configured as if they are all on the same subnet. It can be used to create a subnetting effect without changing the network configuration of the devices.
Is Proxy ARP enabled by default?
An ARP request from one subnet can reach another subnet when both subnets are on the same physical segment (Ethernet cable), because MAC-layer broadcasts reach all the devices on the segment. Proxy ARP is disabled by default on Brocade Layer 3 switches.
Should I use proxy ARP?
If not for the Firewall participating in Proxy ARP, the Network Address Translation would fail, since packets sent from Router C would never arrive to the Firewall. Hence, for Network Address Translation to work properly, the translation device must use Proxy ARP to properly receive packets to be translated.