Dell BigIron RX Series, Configuration Manual

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BigIron RX Series Configuration Guide 191
53-1002253-01
Configuring ARP parameters
7
Syntax: [no] ip proxy-arp
Creating static ARP entries
The device has 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 device, 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 Brocade device receives an ARP
request from the device that has the entry’s address.
You can increase the number of configurable static ARP entries. Refer to “Changing the maximum
number of entries the static ARP table can hold” on page 191.
To display the ARP cache and static ARP table, see the following:
•
To display the ARP table, refer to “Displaying the ARP cache” on page 224.
•
To display the static ARP table, refer to “Displaying the static ARP table” on page 226.
To create a static ARP entry for a static MAC entry, enter a command such as the following.
BigIron RX(config)# arp 1 192.53.4.2 1245.7654.2348 e 1/2
The command adds a static ARP entry that maps IP address 192.53.4.2 to MAC address
1245.7654.2348. The entry is for a MAC address connected to port 1/2 of the device.
Syntax: arp <ip-addr> <mac-addr> ethernet <slot/port>
The <ip-addr> command specifies the IP address of the device that has the MAC address of the
entry.
The <mac-addr> parameter specifies the MAC address of the entry.
The ethernet <slot/port> command specifies the port number attached to the device that has the
MAC address of the entry.
The arp command allows you to specify only one port number. To create a static ARP entry for a
static MAC entry that is associated with multiple ports, specify the first (lowest-numbered) port
associated with the static MAC entry.
Changing the maximum number of entries the static ARP table can hold
The default number of entries in the static ARP table on the device are as follows:
•
Default maximum: 8192
•
Configurable maximum: 65536
NOTE
You must save the configuration to the startup configuration file and reload the software after
changing the static ARP table size to place the change into effect.
NOTE
The basic procedure for changing the static ARP table size is the same as the procedure for changing
other configurable cache or table sizes. Refer to
“Displaying and modifying system parameter
default settings” on page 130.