Справочник Пользователя для Cabletron Systems EMM-E6 Ethernet

The EMM-E6 automatically enters the natural Subnet Mask for any IP 
address that you enter. A natural Subnet Mask is a logical separation 
between network and host identifiers within the IP address. The EMM-E6 
allows you to modify this mask to best suit your needs.

The Subnet Mask defines how your EMM-E6 treats SNMP trap IP 
destination addresses in its Trap table (see Chapter 8, Trap Table Screen, 
for additional information on traps).

Using the Subnet Mask, the EMM-E6 logically determines one of two 
possible locations, either on or not on its own subnet, for each trap IP 
destination address in its trap table. If the address is on its own subnet, the 
EMM-E6 transmits directly to the workstation with that address. If the 
address is not on its subnet, the EMM-E6 transmits to the workstation 
with that IP address combined with the default gateway router MAC 
address.

Use the natural Subnet Mask when:

•

workstations in the Trap table reside on a different subnet (i.e., 

across a gateway or external router), and you want these 
workstations to receive SNMP traps

•

the EMM-E6 provides a natural subnet mask that fits your host/

network identifier scheme.

Modify the natural Subnet Mask when:

•

workstations in the Trap table reside on a different subnet (i.e., 

across a gateway or external router), and you want these 
workstations to receive SNMP traps

CH1Book  Page 5  Wednesday, March 20, 1996  7:48 AM