Cisco ONS 15454 SDH Especificaciones descargar pdf (Pagina 37)

Cisco ONS 15454 SDH Product Overview, R3.4

September 2002

Cisco ONS 15454 SDH Product Overview

Network Management

its own MAC address to the LAN device. The LAN device then sends the datagram

intended for the remote ONS 15454 SDH to the MAC address of the proxy ONS

15454 SDH. Theproxy ONS15454 SDH forwardsthis data tothe remote15454 SDH

using its own ARP table.

Open Shortest Path First

If ONS 15454 SDHs are connected to OSPF networks, ONS 15454 SDH network

information can be automatically communicated across multiple LANs and

WANs. Use CTC to view and configure OSPF area information for the nodes that

the OSPF network controls.

OSPF is a link state Internet routing protocol. Link state protocols use a “hello

protocol” to monitor their links with adjacent routers and test their links to their

neighbors. Link state protocols advertise their directly connected networks and

their active links. Each link state router captures the link state advertisements and

puts them together to create a topology of the entire network or area. From this

database, the router calculates a routing table by constructing a shortest path tree.

Routes are continuously recalculated to capture ongoing topology changes.

You can enable OSPF on the ONS 15454 SDHs so that the ONS 15454 SDH

topology is sent to OSPF routers on a LAN. Advertising the ONS 15454 SDH

network topology to LAN routers eliminates the need to manually provision static

routes for ONS 15454 SDH subnetworks.

Proxy Server Feature

The ONS 15454 proxy server is a set of functions that allows you to network ONS

15454 SDHs in environments where visibility and accessibility between ONS

15454s and CTC computers must be restricted. For example, you can set up a

network so that field technicians and network operations center (NOC) personnel

can both access the same ONS 15454 SDHs while preventing the field technicians

from accessing the NOC LAN. To do this, one ONS 15454 SDH is provisioned as

a gateway NE (GNE) and the other ONS 15454 SDHs are provisioned as end NEs

(ENEs). TheGNE ONS 15454SDH tunnels connectionsbetween CTC computers

and ENE ONS 15454 SDHs, providing management capability while preventing

access for non-ONS 15454 SDH management purposes.

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 55 56

Sin comentarios

Cisco ONS 15454 SDH Especificaciones Pagina 37