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74 System configuration software features
ASCII configuration file
You can also store the configuration parameters of a switch/stack as an
ASCII configuration file and retrieve the stored file to automatically configure
a replacement switch/stack.
Autotopology
You can enable the Optivity* Autotopology* protocol on the Ethernet Routing
Switch 2500 Series using the CLI. For more information about Autotopology,
go to the Nortel support site: www.nortel.com/support (The product family
for Optivity and Autotopology is Data and Internet.)
Link Layer Discovery Protocol (IEEE 802.1ab)
Release 4.1 software supports the Link Layer Discovery Protocol (LLDP)
(IEEE 802.1ab), which lets stations connected to a LAN to advertise their
capabilities to each other, enabling the discovery of physical topology
information for network management. LLDP-compatible stations can
consist of any interconnection device including PCs, IP Phones, switches,
and routers. Each LLDP station stores LLDP information in a standard
Management Information Base (MIB), making it possible for the information
to be accessed by a network management system (NMS) or application.
Each LLDP station:
•
advertises connectivity and management information about the local
station to adjacent stations on the same 802 LAN (802.3 Ethernet with
Ethernet Routing Switch 2500)
•
receives network management information from adjacent stations on
the same LAN
ATTENTION
LLDP works in stack mode.
LLDP makes it possible to discover certain configuration inconsistencies or
malfunctions that can result in impaired communications at higher layers.
For example, it can be used to discover duplex mismatches between an IP
Phone and the connected switch.
LLDP is compatible with IETF PROTO MIB (IETF RFC 2922).
Figure 22 "How LLDP works" (page 75) shows an example of how LLDP
works in a network.
Nortel Ethernet Routing Switch 2500 Series
Overview — System Configuration
NN47215-500 (323162-B) 02.02 Standard
4.1 19 November 2007
Copyright © 2007, Nortel Networks
.