Quick Reference Guide

576 PowerConnect B-Series TI24X Configuration Guide
53-1002269-02
Basic IP parameters and defaults – Layer 2 Switches
21
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.
NOTE
Layer 2 Switches also provide IP multicast forwarding, which is enabled by default. For information
about this feature, refer to Chapter 18, “Configuring IP Multicast Traffic Reduction for PowerConnect
B-Series TI24X Switches”.
IP global parameters – Layer 2 Switches
Table 98 lists the IP global parameters for Layer 2 Switches.
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
page 613
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 page 614
1. 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.
TABLE 97 IP interface parameters – Layer 3 Switches (Continued)
Parameter Description Default See page...