Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 31)

IP global parameters - Layer 3 Switches (Continued) TABLE 2
Parameter Description Default
IP address and
mask notation Format for displaying an IP address and its network mask
information. You can enable one of the following:
• Class-based format; example: 192.168.1.1 255.255.255.0
• Classless Interdomain Routing (CIDR) format; example:
192.168.1.1/24
Class-based
NOTE
Changing this
parameter affects the
display of IP
addresses, but you
can enter addresses in
either format
regardless of the
display setting.
Router ID The value that routers use to identify themselves to other routers
when exchanging route information. OSPF and BGP4 use router
IDs to identify routers. RIP does not use the router ID. The IP address
configured on the
lowest-numbered
loopback interface.
If no loopback
interface is configured,
then the lowest-
numbered IP address
configured on the
device.
Maximum
Transmission Unit
(MTU) The maximum length an Ethernet packet can be without being
fragmented. 1500 bytes for
Ethernet II
encapsulation
1492 bytes for SNAP
encapsulation
Address Resolution
Protocol (ARP) A standard IP mechanism that routers use to learn the Media
Access Control (MAC) address of a device on the network. The
router sends the IP address of a device in the ARP request and
receives the device MAC address in an ARP reply. Enabled
ARP rate limiting Lets you specify a maximum number of ARP packets the device
will accept each second. If the device receives more ARP packets
than you specify, the device drops additional ARP packets for the
remainder of the one-second interval. Disabled
ARP age The amount of time the device keeps a MAC address learned
through ARP in the device ARP cache. The device resets the timer
to zero each time the ARP entry is refreshed and removes the
entry if the timer reaches the ARP age.
NOTE
You also can change the ARP age on an individual interface basis.
Ten minutes
Proxy ARP An IP mechanism a router can use to answer an ARP request on
behalf of a host, by replying with the router own MAC address
instead of the host. Disabled
Static ARP entries An ARP entry you place in the static ARP table. Static entries do
not age out. No entries
IP Configuration
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 31
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