Ethernet/token ring ip interface parameters -9, Table 14-4, If an ip address – Cabletron Systems 1800 User Manual

Page 225: If the

Configuring IP Routing

14-9

The default value of the network mask will be configured automatically, to reflect the
appropriate address class, after an IP address is specified. (

Network Mask

is determined

Source IP Address

, and

NetMask

is determined by

Sec. IP Addr

If the interface is

configured as unnumbered (and, therefore, no

Source IP Address

is configured), the

default value of

Network Mask

will be taken from the numbered interface that is

assigned.

If an IP address (

Source IP Address/Sec. IP Addr

) is specified/

changed, the network mask will automatically change to
default values appropriate for the new address. For this
reason, configure the IP address first, then the mask.

The default value of the broadcast address will be configured automatically after an IP
address or a network mask is specified. The value will be the dotted decimal notation
result of "ANDing" the binary versions of the IP address and the network mask, then
filling in the remaining bits with

s. (

Broadcast Address

is associated with

Source IP

Address

and

Network Mask

, while

Bcast Addr

is associated with

Sec. IP Addr

and

NetMask

If the (

Source IP Address/Sec. IP Addr

) or

Network Mask/Netmask

is specified/changed, the associated broadcast address
will automatically change to default values appropriate
for the new address. For this reason, configure the IP
address first, then the mask, then the broadcast address.

Table 14-4 Ethernet/Token Ring IP Interface Parameters

Parameter

Valid Values

Default Value

Maximum Tr ansmi ssion Uni t

1–4096

4096

Routing Metric Count

0–255

ICMP Redirects

Y/N

RI P Support