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Proxy ARP commands 3 Configuration commands

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proxy arp

Proxy ARP enables the BSGX4e to transparently connect hosts that belong

to different networks without having to configure default gateways, routes,

or other network parameters. When a host on a network accessible to the

WAN port of the BSGX4e sends an ARP request through the BSGX4e to a

host on its LAN switch, it responds to the request by supplying its own MAC

address (the MAC of the WAN port). The sending host caches the MAC

address of the BSGX4e. A similar process occurs in the reverse direction.

When a host on BSGX4e LAN sends an ARP request to a host on a remote

network, BSGX4e responds with the BSGX4e LAN MAC address. All

subsequent traffic between the hosts, sent as normal (as if on the same

subnet), are then be routed by the BSGX4e.

Proxy ARP has the following characteristics:

z It is applicable to both LAN and WAN interfaces. It can be enabled and

disabled on interfaces that use ARP: Ethernet and VLANs

z The proxy is configured for a specific IP address

z The unit must have static IP addresses on all affected interfaces, for

example DHCP must be disabled

z It automatically creates dynamic ARP route table entries and firewall

security policies as needed. Deleting or disabling a proxy ARP removes

the corresponding route and security policy

z Proxy ARP can configure a maximum of 32 proxies

Syntax config proxy arp [new|<id>] from [eth0|eth1] to [eth0|eth1] ip

<ip address> enable [yes|no]

Parameters id Enter new for a new proxy or an exiting ID for

reconfiguring.

from eth0|eth1 Enter the interface from which proxied traffic is

routed.

to eth0|eth1 Enter the interface to which proxied traffic is to

be routed.

ip ip address Enter the destination address for which this

proxy is being created.

enable yes|no Enable/disable proxy ARP.

Example > config proxy arp new from eth0 to eth1 ip 192.168.1.0/24

enable yes

commands

del proxy arp

display proxy arp

show proxy arp

show arp table

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Avaya BSGx4e CLI Guide de l'utilisateur Page 88