Specifications
35
Cisco ONS 15454 Product Overview, R3.3
May 2002
Cisco ONS 15454 Product Overview
Network Management
Simple Network Management Protocol
Simple Network Management Protocol (SNMP) is an application-layer Internet
Protocol (IP) that enables network devices to exchange management information.
Network administrators can manage network performance, find and solve network
problems, and plan for network growth. The ONS 15454 supports SNMP Version
1 (SNMPv1) and SNMP Version 2c (SNMPv2c); SNMPv2c offers additional
protocol operations.
The ONS 15454 uses SNMP to communicate segments of the CTC information
model to network management systems, such as HP OpenView Network Node
Manager (NNM) or Open Systems Interconnection (OSI) NetExpert. SNMP conveys
information required for node-level inventory, fault, and performance management of
the ONS 15454 node, and for generic read-only management of DS-1, DS-3, SONET,
and Ethernet.
The ONS 15454 incorporates SNMP Remote Monitoring (RMON) to allow
network operators to monitor the ONS 15454 Ethernet cards. RMON operates
transparently with a network management application, but you can provision
RMON alarm thresholds with CTC.
Proxy ARP
Proxy ARP enables a LAN-connected gateway ONS 15454 to automatically
handle ARP requests for remote non-LAN ONS 15454s connected by a DCC to
the gateway ONS 15454. Proxy ARP requires no manual configuration in CTC.
Proxy ARP has a single LAN-connected ONS 15454 stand in (proxy) for remote ONS
15454s. If a device on the LAN sends an ARP request intended for one of the
DCC-connected ONS 15454s, the gateway ONS 15454 returns its own MAC address
to the LAN device. The LAN device then sends the datagram intended for the remote
ONS 15454 to the MAC address of the proxy ONS 15454. The proxy ONS 15454
forwards this data to the remote 15454 using its own ARP table.