Configuration Guide User guide

986 FastIron Configuration Guide
53-1002494-02
Configuring IP parameters – Layer 3 Switches
• FWS, FCX, and ICX stackable switches – stack-unit/slotnum/portnum
• FSX 800 and FSX 1600 chassis devices – slotnum/portnum
• ICX devices – slotnum/portnum
• FESX compact switches – portnum
Changing the maximum number of entries the static ARP table can hold
Table 168 on page 986 lists the default maximum and configurable maximum number of entries in
the static ARP table that are supported on a Brocade Layer 3 Switch. If you need to change the
maximum number of entries supported on a Layer 3 Switch, use the method described in this
section.
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 the section “Displaying system parameter default
values” on page 578.
To increase the maximum number of static ARP table entries you can configure on a Brocade Layer
3 Switch, enter commands such as the following at the global CONFIG level of the CLI.
Brocade(config)# system-max ip-static-arp 1000
Brocade(config)# write memory
Brocade(config)# end
Brocade# reload
NOTE
You must save the configuration to the startup-config file and reload the software after changing the
static ARP table size to place the change into effect.
Syntax: system-max ip-static-arp <num>
The <num> parameter indicates the maximum number of static ARP entries and can be within one
of the ranges shown in Table 168, depending on the software version running on the device.
Configuring forwarding parameters
The following configurable parameters control the forwarding behavior of Brocade Layer 3
Switches:
• Time-To-Live (TTL) threshold
• Forwarding of directed broadcasts
• Forwarding of source-routed packets
• Ones-based and zero-based broadcasts
All these parameters are global and thus affect all IP interfaces configured on the Layer 3 Switch.
TABLE 168 Static ARP entry support
Default maximum Configurable minimum Configurable maximum
FastIron X Series and Brocade FCX Series devices
512 512 6000
ICX 6450 devices
256 64 1024