Foundry Networks Switch and Router Installation And Configuration Manual page 459

Table 15.3: IP Global Parameters – Layer 2 Switches (Continued)
Parameter Description
Time to Live The maximum number of routers (hops) through
(TTL) which a packet can pass before being discarded.
Each router decreases a packet's TTL by 1 before
forwarding the packet. If decreasing the TTL causes
the TTL to be 0, the router drops the packet instead of
forwarding it.
Domain name A domain name (example: foundry.router.com) you
for Domain can use in place of an IP address for certain
Name Server operations such as IP pings, trace routes, and Telnet
(DNS) resolver management connections to the router.
DNS default A list of gateways attached to the router through
gateway which clients attached to the router can reach DNSs.
addresses
Source interface The IP address the Layer 2 Switch uses as the source
address for Telnet, RADIUS, or TACACS/TACACS+
packets originated by the router. The Layer 2 Switch
uses its management IP address as the source
address for these packets.
DHCP gateway The device can assist DHCP/BootP Discovery
stamp packets from one sub-net to reach DHCP/BootP
servers on a different sub-net by placing the IP
address of the router interface that forwards the
packet in the packet's Gateway field.
You can specify up to 32 gateway lists. A gateway list
contains up to eight gateway IP addresses. You
activate DHCP assistance by associating a gateway
list with a port.
When you configure multiple IP addresses in a
gateway list, the Layer 2 Switch inserts the addresses
into the DHCP Discovery packets in a round robin
fashion.
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 port 1 (or 1/1). NetIron Internet Backbone routers do not have a
default IP address.
December 2000
Configuring IP
Default See page...
64 hops 15-79
None configured 15-77
None configured 15-77
The management IP n/a
address of the Layer 2
Switch.
Note: This parameter
is not configurable on
Layer 2 Switches.
None configured 15-82
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