192 BigIron RX Series Configuration Guide53-1002253-01Configuring ARP parameters7To increase the maximum number of entries in the static ARP table you can configure, entercommands such as the following at the global CONFIG level of the CLI.BigIron RX(config)# system-max ip-static-arp 4000BigIron RX(config)# write memoryBigIron RX(config)# endBigIron RX# reloadSyntax: system-max ip-static-arp The parameter indicates the maximum number of static ARP entries: 2048 - 4096 (default:2048).The maximum number of static ARP entries is 16384 (default: 2048).NOTEAs of release 2.4.00, the system-max static-arp command no longer affects memory allocation forstatic ARPs. Instead, the BigIron RX dynamically allocates memory for static-arp entries as requiredand this is only limited by the memory allocation for all ARP entries, specified by the system-maxip-arp command.Creating a floating static ARP entryYou can create a static ARP entry without port assignments.When a floating static ARP entry (Static ARP entry without the outgoing interface defined) is addedto the ARP Inspection table, the mapping is checked against the current static ARP table. If an ARPentry with a matching IP but mismatch MAC is found, it will be deleted and a re-arp on the IP will beissued.When an ARP entry is deleted from ARP Inspection table, the corresponding entry in the static ARPtable will also be deleted.To create a floating static ARP entry for a static MAC entry, enter a command such as the following.BigIron RX(config)# arp 192.53.4.2 1245.7654.2348The command adds a floating static ARP entry that maps IP address 192.53.4.2 to MAC address1245.7654.2348.Syntax: arp The parameter specifies the IP address of the device that has the MAC address of theentry.The parameter specifies the MAC address of the entry.Static route ARP validation checkYou can configure the BigIron RX to perform validation checks on the destination MAC address, thesender and target IP addresses, and the source MAC address.You can enable ARP validation check on the global basis. When feature is enabled, the static routewill only be installed when the next hop ARP has been resolved.Configuring an ARP validation checkTo enable the ARP validation check globally, enter a command such as the following.
