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TABLE 3
IP interface parameters - Layer 3 switches (continued)
Parameter
Description
Default
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.
Refer to 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.
NOTE
Brocade Layer 2 switches also provide IP multicast forwarding, which is enabled by default. For information about this feature,
refer to "IP Multicast Traffic Reduction" in the
FastIron Ethernet Switch IP Multicast Configuration Guide.
IP global parameters - Layer 2 switches
TABLE 4
IP global parameters - Layer 2 switches
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.
IP address
A Layer 3 network interface address
None configured
Basic IP parameters and defaults - Layer 2 switches
FastIron Ethernet Switch Layer 3 Routing
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