Scenario 8: Dual Gnes On A Subnet; Table 19-4 Proxy Server Firewall Filtering Rules When Packet Addressed To Ons 15454 - Cisco ONS 15454 DWDM Installation And Operation Manual

Hide thumbs Also See for ONS 15454 DWDM:

Table of Contents

CTC Connectivity Reference

Packets Arriving At

TCC2 Ethernet

DCC interface

1. UDP = User Datagram Protocol

2. TCP = Transmission Control Protocol

If you implement the proxy server, note that all DCC-connected ONS 15454s on the same Ethernet

segment must have the same gateway setting. Mixed values produce unpredictable results, and might

leave some nodes unreachable through the shared Ethernet segment.

If nodes become unreachable, correct the setting by performing one of the following:

19.2.8 Scenario 8: Dual GNEs on a Subnet

The ONS 15454 provides GNE load balancing, which allows CTC to reach ENEs over multiple GNEs

without the ENEs being advertised over OSPF. This feature allows a network to quickly recover from

the loss of GNE, even if the GNE is on a different subnet. If a GNE fails, all connections through that

GNE fail. CTC disconnects from the failed GNE and from all ENEs for which the GNE was a proxy, and

then reconnects through the remaining GNEs. GNE load balancing reduces the dependency on the launch

GNE and DCC bandwidth, both of which enhance CTC performance.

dual GNEs on the same subnet.

Dual GNEs do not need special provisioning

September 2004

SNMP trap relay port (391)

proxy server port (1080)

Disconnect the craft computer from the unreachable ONS 15454. Connect to the ONS 15454

through another network ONS 15454 that has a DCC connection to the unreachable ONS 15454.

Disconnect all DCCs to the node by disabling them on neighboring nodes. Connect a CTC computer

directly to the ONS 15454 and change its provisioning.

packets addressed to the

Figure 19-16

shows a network with dual GNEs on different subnets.

Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7

19.2.8 Scenario 8: Dual GNEs on a Subnet

Figure 19-15

shows a network with