Ip Interface Parameters - Layer 3 Switches - Foundry Networks FESX Manual

IP Interface Parameters – Layer 3 Switches
Table 16.3 lists the interface-level IP parameters for Layer 3 Switches.
Parameter Description
IP state The Internet Protocol, version 4
IP address A Layer 3 network interface address
Note: Layer 2 Switches have a single IP address
used for management access to the entire device.
Layer 3 Switches have separate IP addresses on
individual interfaces.
Encapsulation The format of the packets in which the router
type encapsulates IP datagrams. The encapsulation
format can be one of the following:
• Ethernet II
• SNAP
Maximum The maximum length (number of bytes) of an
Transmission encapsulated IP datagram the router can forward.
Unit (MTU)
ARP age Locally overrides the global setting. See Table 16.2
on page 16-9.
Metric A numeric cost the router adds to RIP routes learned
on the interface. This parameter applies only to RIP
routes.
Directed Locally overrides the global setting. See Table 16.2
broadcast on page 16-9.
forwarding
ICMP Router Locally overrides the global IRDP settings. See Table
Discovery 16.2 on page 16-9.
Protocol (IRDP)
DHCP gateway The router can assist DHCP/BootP Discovery packets
stamp from one sub-net to reach DHCP/BootP servers on a
different sub-net by placing the IP address of the
router interface that receives the request in the
request packet's 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 (bootpc) must be enabled and you
must configure an IP helper address (the server's IP
address or a directed broadcast to the server's sub-
net) on the port connected to the client.
December 2005
Table 16.3: IP Interface Parameters – Layer 3 Switches
© Foundry Networks, Inc.
Configuring IP
Default See page...
Enabled n/a
Note: You cannot
disable IP.
16-17
a
None configured
Ethernet II 16-21
1500 for Ethernet II 16-22
encapsulated packets
1492 for SNAP
encapsulated packets
Ten minutes 16-27
1 (one) 17-4
Disabled 16-29
Disabled 16-45
The lowest-numbered 16-50
IP address on the
interface that receives
the request
16 - 13