Configuration Guide User guide

960 FastIron Configuration Guide
53-1002494-02
Basic IP parameters and defaults – Layer 3 Switches
Maximum
Transmission Unit
(MTU)
The maximum length (number of bytes) of an
encapsulated IP datagram the router can forward.
1500 for Ethernet II
encapsulated packets
1492 for SNAP
encapsulated packets
page 975
ARP age Locally overrides the global setting. Refer to
Table 164 on page 956.
Ten minutes page 983
Metric A numeric cost the router adds to RIP routes
learned on the interface. This parameter applies
only to RIP routes.
1 (one) page 1203
Directed broadcast
forwarding
Locally overrides the global setting. Refer to
Table 164 on page 956.
Disabled page 987
ICMP Router
Discovery Protocol
(IRDP)
Locally overrides the global IRDP settings. Refer to
Table 164 on page 956.
Disabled page 1006
DHCP gateway
stamp
The router can assist DHCP/BootP Discovery
packets from one subnet to reach DHCP/BootP
servers on a different subnet by placing the IP
address of the router interface that receives the
request in the request packet Gateway field.
You can override the default and specify the IP
address to use for the Gateway field in the
packets.
NOTE: UDP broadcast forwarding for client
DHCP/BootP requests (bootps) must be
enabled (this is enabled by default) and
you must configure an IP helper address
(the server IP address or a directed
broadcast to the server subnet) on the port
connected to the client.
The lowest-numbered IP
address on the interface
that receives the
request
page 1012
DHCP Client-Based
Auto-Configuration
Allows the switch to obtain IP addresses from a
DHCP host automatically, for either a specified
(leased) or infinite period of time.
Enabled page 1028
DHCP Server All FastIron devices can be configured to function
as DHCP servers.
Disabled page 1013
TABLE 165 IP interface parameters – Layer 3 Switches (Continued)
Parameter Description Default For more
information