Brocade FastIron Ethernet Switch Layer 3 Routing Configuration Guide - Manual (Page 35)

IP interface parameters - Layer 3 switches (Continued) TABLE 3
Parameter Description Default
ICMP Router
Discovery Protocol
(IRDP) Locally overrides the global IRDP settings. Disabled
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
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
DHCP Server All FastIron devices can be configured to function as DHCP
servers. Disabled
UDP broadcast
forwarding The router can forward UDP broadcast packets for UDP
applications such as BootP. By forwarding the UDP
broadcasts, the router enables clients on one subnet to find
servers attached to other subnets.
NOTE
To completely enable a client UDP application request to find a
server on another subnet, you must configure an IP helper
address consisting of the server IP address or the directed
broadcast address for the subnet that contains the server. See
the next row.
The router helps forward
broadcasts for the
following UDP
application protocols:
• bootps
• dns
• netbios-dgm
• netbios-ns
• tacacs
• tftp
• time
IP helper address The IP address of a UDP application server (such as a BootP
or DHCP server) or a directed broadcast address. IP helper
addresses allow the router to forward requests for certain UDP
applications from a client on one subnet to a server on another
subnet. None configured
Basic IP parameters and defaults - Layer 2 Switches
IP is enabled by default. The following tables list the Layer 2 switch IP parameters, their default values,
and where to find configuration information.
Basic IP parameters and defaults - Layer 2 Switches
FastIron Ethernet Switch Layer 3 Routing Configuration Guide 35
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