Foundry Networks FESX User Manual

Foundry Configuration Guide for the FESX, FSX, and FWSX
16 - 14 © Foundry Networks, Inc. December 2005
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
sub-net to find servers attached to other sub-nets.
Note: To completely enable a client’s UDP
application request to find a server on another sub-
net, you must configure an IP helper address
consisting of the server’s IP address or the directed
broadcast address for the sub-net 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
16-48
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 sub-net to a server on another sub-net.
None configured 16-49
a.Some devices have a factory default, such as 209.157.22.154, used for troubleshooting during installation.
For Layer 3 Switches, the address is on module 1 port 1 (or 1/1). NetIron Internet Backbone routers do not
have a default IP address.
Table 16.3: IP Interface Parameters – Layer 3 Switches (Continued)
Parameter Description Default See page...

Foundry Networks FESX Specifications

General

Brand	Foundry Networks
Model	FESX
Category	Switch
Language	English