Brocade TurboIron 24X Series Configuration Guide - Manual (Page 495)

Brocade TurboIron 24X Series Configuration Guide 461
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Configuring IP parameters – Layer 3 Switches
Proxy ARP is disabled by default on Layer 3 Switches. This feature is not supported on Layer 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 following command.
TurboIron(config)#ip proxy-arp
To again disable IP proxy ARP on a global basis, enter the following command.
TurboIron(config)#no ip proxy-arp
Syntax: [no] ip proxy-arp
• Layer 3 devices only – BL3 and L3
Creating static ARP entries
Layer 3 Switches have a static ARP table, in addition to the regular ARP cache. The static ARP table
contains entries that you configure.
Static entries are useful in cases where you want to pre-configure an entry for a device that is not
connected to the Layer 3 Switch, or you want to prevent a particular entry from aging out. The
software removes a dynamic entry from the ARP cache if the ARP aging interval expires before the
entry is refreshed. Static entries do not age out, regardless of whether the device receives an ARP
request from the device that has the entry address.
NOTE
You cannot create static ARP entries on a Layer 2 Switch.
The maximum number of static ARP entries you can configure depends on the software version
running on the device. Refer to
“Changing the maximum number of entries the static ARP table
can hold” on page 462.
To display the ARP cache and static ARP table, refer to the following:
• To display the ARP table, refer to “Displaying the ARP cache” on page 497.
• To display the static ARP table, refer to “Displaying the static ARP table” on page 498.
To create a static ARP entry, enter a command such as the following.
TurboIron(config)#arp 1 192.53.4.2 0000.0054.2348 e 2
Syntax: arp ethernet
The parameter specifies the entry number. You can specify a number from 1 up to the
maximum number of static entries allowed on the device.
The command specifies the IP address of the device that has the MAC address of the
entry.
The parameter specifies the MAC address of the entry.
The command specifies the port number attached to the device that has the MAC
address of the entry.