Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 56)

10.10.10.0/24 subnet cannot reach a device in the 10.20.20.0 subnet if the subnets are on different
network cables, and thus is not answered.
NOTE
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 BrocadeLayer 3 switches. This feature is not supported on
BrocadeLayer 2 switches.
You can enable proxy ARP at the Interface level, as well as at the Global CONFIG level, of the CLI.
NOTE
Configuring proxy ARP at the Interface level overrides the global configuration.
Enabling proxy ARP globally
To enable IP proxy ARP on a global basis, enter the ip proxy-arp command.
device(config)# ip proxy-arp
To again disable IP proxy ARP on a global basis, enter the no ip proxy-arp command.
device(config)# no ip proxy-arp
Syntax: [no] ip proxy-arp
Enabling IP ARP on an interface
NOTE
Configuring proxy ARP at the Interface level overrides the global configuration.
To enable IP proxy ARP on an interface, enter the following commands.
device(config)# interface ethernet 5
device(config-if-e1000-5)# ip proxy-arp enable
To again disable IP proxy ARP on an interface, enter the following command.
device(config)# interface ethernet 5
device(config-if-e1000-5)# ip proxy-arp disable
Syntax: [no] ip proxy-arp { enable | disable }
NOTE
By default, gratuitous ARP is disabled for local proxy ARP.
Creating static ARP entries
Brocade Layer 3 switches have a static ARP table, in addition to the regular ARP cache. The static
ARP table contains entries that you configure.
Creating static ARP entries
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