Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 68)

54 Brocade Virtual ADX Switch and Router Guide
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Configuring IP parameters
4
Configuring IP parameters
The following sections describe how to configure IP parameters. Some parameters can be
configured globally while others can be configured on individual interfaces. Some parameters can
be configured globally and overridden for individual interfaces.
Configuring IP addresses
You can configure an IP address on the following types of Layer 3 Switch interfaces:
• Ethernet port
• Virtual routing interface (also called a Virtual Ethernet or “VE”)
• Loopback interface
By default, you can configure up to 32 IP addresses on each interface. You can increase this
amount to up to 128 IP subnet addresses per port by increasing the size of the
subnet-per-interface table.
NOTE
Once you configure a virtual routing interface on a VLAN, you cannot configure Layer 3 interface
parameters on individual ports in the VLAN. Instead, you must configure the parameters on the
virtual routing interface itself.
Brocade devices support both classical IP network masks (Class A, B, and C subnet masks, and so
on) and Classless Interdomain Routing (CIDR) network prefix masks:
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’s UDP application
request to find a server on another subnet, you
must configure an IP helper address consisting of
the server’s 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 82
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 83
IP state The Internet Protocol, version 4 Enabled
NOTE: You cannot
disable IP.
n/a
TABLE 4 IP interface parameters (Continued)
Parameter Description Default See
page...