SNMP, MIBs, and V!CAS System Tables
17
User’s Guide: Version 1.2
A MIB is a sort of database containing different variables (often re-
ferred to as objects), all of which combined, define how the V!CAS oper-
ates as a whole. The V!CAS implements differnet MIBs, including the
standard IP MIB version 2, Novell and BinTec Enterprise MIBs. Our
SNMP client-process running on zeus shown above, would need to load
MIB files locally from disk before contacting bingo.
Upon booting, the V!CAS starts an SNMP process, then reads its con-
figuration file (covered next) and stores the information in memory. From
the SNMP shell, these variables are represented by various System Ta-
bles
which are arranged into functional groups. Entering the “g” com-
mand displays a list of groups while the “l” command shows a long list
of all system tables.
These variables can be changed by editing the system tables; the
V!CAS then updates the respective variables in memory instantly. As
mentioned earlier, the V!CAS can be managed from any of it’s ports.
Note:
As soon as a variable is changed in memory, the setting
becomes effective immediately, the V!CAS does not have to
be rebooted nor do configuration files need be reloaded.
Any changes made to memory not saved in a configuration
file, however, are lost once the system is shut down.
Memor
y
IP
Admin
CAPI
Bridge
Interface
Ethernet
ISDN
MIB
X25
IPX
PPP
ISDN
SNMP
!
