User`s guide

Chapter 1: Introduction
1-6 6E123-50 and 6E133-49 User’s Guide
1.3.8 Runtime IP Address Discovery
This feature enables the modules to automatically accept an IP address
from a BootP server on the network into NVRAM without requiring a
user to enter an IP address through Local Management.
When the modules are connected to the network and powered up,
Runtime IP Address Discovery (RAD) checks the modules for an IP
address. If one has not yet been assigned (module and 6C105 chassis IP
address set to 0.0.0.0), RAD checks to see if any of the module interfaces
have a link. If so, RAD sends out Reverse Address Resolution Protocol
(RARP) and BootP requests to obtain an IP address from a RARP or
BootP server on the network.
The RAD requests start out at an interval of one second. The interval then
doubles after every transmission until an interval of 300 seconds is
reached. At this point, the interval remains at 300 seconds. The RAD
requests continue until an IP address is received from a RARP or BootP
server, or an IP address is entered using Local Management.
1.4 LOCAL MANAGEMENT FEATURES
Local Management provides the tools that allow management of the
6E123-50 and 6E133-49, the Fast Ethernet Interface Modules, the High
Speed Interface Module (HSIM) and the 6C105 chassis. Local
Management for the 6E123-50 and 6E133-49 provides the features
described in Sections 1.4.1 through 1.4.5.
1.4.1 Remote Monitoring (RMON)
The 6E123-50 and 6E133-49 support all Ethernet RMON groups, which
include Statistics, Alarms, Events and History. These groups are enabled
on all ports by default.
Cabletron Systems RMON Actions is a vendor specific extension of
RMON and provides the ability to set an “Action” on any SNMP MIB
variable. The Action can be triggered by any RMON Event and/or Alarm.
An example of an Action would be to turn off a MIB-2 interface if a
broadcast threshold is crossed.