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Table Of Contents

Configuring Dual Shelf Nodes

About Dual Shelf Nodes

Configuring Line Card Protected Dual Shelf Nodes

Configuring and Cabling the Shelves

Configuring Connections Between Shelves

Configuring APS

Configuring Dual Shelf Nodes

This chapter describes how to configure a dual shelf node in a network topology. This chapter contains the following sections:

• About Dual Shelf Nodes

• Configuring Line Card Protected Dual Shelf Nodes

About Dual Shelf Nodes

On a single Cisco ONS 15540 ESPx shelf, only 16 channels can be supported with line card protection. By cascading two Cisco ONS 15540 ESPx shelves, up to 32 channels can be supported with line card protection. You can use dual shelf nodes in either a point-to-point topology or a ring topology. The OSCs (optical supervisory channels) can both connect to one shelf, or they can be split between the two shelves.

Configuring Line Card Protected Dual Shelf Nodes

To configure a dual shelf node with line card protection, follow these steps:

Step 1 Populate the shelves with the motherboards, modules, and processor cards.

Step 2 Connect the mux/demux modules with cables and configure the patch connections.

For more information on patch connections, see the "About Patch Connections" section on page 4-20.

Step 3 Establish network access to both shelves.

For information on configuring network access, see the "Configuring IP Access on the NME Interface" section on page 3-3.

Step 4 Configure IP addresses on the OSC wave interfaces.

For information on configuring an IP address on the OSC wave interface, see the "Configuring IP on the OSC" section on page 11-8.

Step 5 Configure the network topology information for the connections between the two shelves.

Step 6 Configure APS (Automatic Protection Switching) on the shelves in the network that support the channels.

Configuring and Cabling the Shelves

You can use add/drop mux/demux modules in a dual shelf node. For configurations with fewer than 32 channels in line card protection, use 8-channel add/drop mux/demux modules as often as possible.

Add/Drop Mux/Demux Modules for 24 Channels

Shelf 1 is configured for channels 1-16 with OSC to the west and shelf 2 is configured for channels 17-24 with OSC to the east. The mux/demux modules are patched between the two shelves as if they were in the same shelf.

Figure 8-1 shows how the modules are installed for shelf 1 in the line card protected 24-channel configuration.

Figure 8-1 Shelf 1 Configuration for 24 Channels with Add/Drop Mux/Demux Modules and Line Card Protection

The configuration for shelf 2 is shown in Figure 8-2. As in shelf 1, unprotected line card motherboards are used in slots 2-5.

Figure 8-2 Shelf 2 Configuration for 24 Channels with Add/Drop Mux/Demux Modules and Line Card Protection

Figure 8-3 Add/Drop Mux/Demux Module Cabling with Two Shelves with 24 Channels and Line Card Protection

Configuring Connections Between Shelves

To include the two shelves as one node in the network topology, you must configure the patch connection between the shelves in the CLI (command-line interface). To configure these connections, use the following commands, beginning in global configuration mode:

 
Command
Purpose

Step 1

Switch1(config)# interface {wave slot | oscfilter slot/subcard | thru slot/subcard | wdm slot/subcard}

Selects the interface to configure and enters interface configuration mode.

Step 2

Switch(config-if)# topology neighbor {name node-name | ip-address node-ip-address | mac-address node-mac-address} {port {name port-name | ip-address port-ip-address | mac-address port-mac-address}}

Configures the network topology information for a neighboring node.

Step 3

Switch(config-if)# topology neighbor agent ip-address ip-address

Specifies the address of the network topology agent on a neighboring node.

Note Configure the patch connections between the mux/demux modules on the same shelf as described in the "About Patch Connections" section on page 4-20.

The following example shows how to configure the patch connections between the add/drop mux/demux modules on the two shelves in the node:

Shelf1(config)# interface thru 0/3 Shelf1(config-if)# topology neighbor name shelf2 port name wdm 0/0 Shelf1(config-if)# topology neighbor agent ip-address 10.2.2.4 Shelf1(config-if)# exit Shelf1(config)# interface wdm 1/3 Shelf1(config-if)# topology neighbor name shelf2 port name thru 1/0 Shelf1(config-if)# topology neighbor agent ip-address 10.2.2.4 Shelf1(config-if)# exit

Shelf2(config)# interface wdm 0/0 Shelf2(config-if)# topology neighbor name shelf1 port name thru 0/3 Shelf2(config-if)# topology neighbor agent ip-address 10.2.2.4 Shelf2(config-if)# exit Shelf2(config)# interface thru 1/0 Shelf2(config-if)# topology neighbor name shelf1 port name wdm 0/0 Shelf2(config-if)# topology neighbor agent ip-address 10.2.2.4 Shelf2(config-if)# exit

Configuring APS

When a dual shelf node is part of a network topology, the channels supported by it might require special configuration. On a dual shelf node, the OSC might have only one connection, such as the configuration shown in Figure 8-1. For the APS Channel Protocol to function correctly, the shelves that support a channel must both have two OSC connections, or you must configure the APS group name and IP address information on the shelves.

To configure APS for a channel supported on a dual shelf node without full OSC support, perform the following steps, beginning in global configuration mode:

 
Command
Purpose

Step 1

Switch1(config)# redundancy

Switch1(config-red)#

Enters redundancy configuration mode.

Step 2

Switch(config-red)# associate group name

Switch(config-red-aps)#

Specifies an APS group name and enters APS configuration mode.

Note The group name is case sensitive.

Step 3

Switch(config-red-aps)# aps disable

Disables APS activity between the interfaces.

Note For newly created APS groups, APS activity is disabled by default.

Step 4

Switch(config-red-aps)# aps working wavepatch slot/subcard/port

Configures the working path interface.

Step 5

Switch(config-red-aps)# aps protection wavepatch slot/subcard/port

Configures the protection path interface.

Step 6

Switch1(config-red-aps)# aps y-cable

Enables y-cable protection. The default state is no y-cable protection (disabled).

Step 7

Switch1(config-red-aps)# aps far-end group group-name ip-address address

Configures the APS group name and IP address on the remote node that support the channel.

Step 8

Switch1(config-red-aps)# aps enable

Enables APS activity between the interfaces.

For more information on configuring y-cable line card protection, refer to the "Configuring Y-Cable Based Line Card Protection" section on page 7-8.

Examples

For these examples, assume the following:

•Channels 17-20 terminate on the second shelf of the dual shelf node.

•The management IP address of the second shelf of the dual shelf node is 10.1.2.3.

•The management IP address of the single shelf node is 10.3.2.1.

The following example shows how to configure channels 17-20 on the single shelf node:

Switch(config)# redundancy Switch(config-red)# associate group Channel17 Switch(config-red-aps)# aps working transparent 2/0/0 Switch(config-red-aps)# aps protection transparent 4/0/0 Switch(config-red-aps)# aps y-cable Switch(config-red-aps)# aps far-end group Channel17 ip-address 10.1.2.3 Switch(config-red-aps)# aps enable Switch(config-red-aps)# exit Switch(config-red)# associate group Channel18 Switch(config-red-aps)# aps working transparent 2/1/0 Switch(config-red-aps)# aps protection transparent 4/1/0 Switch(config-red-aps)# aps y-cable Switch(config-red-aps)# aps far-end group Channel18 ip-address 10.1.2.3 Switch(config-red-aps)# aps enable Switch(config-red-aps)# exit Switch(config-red)# associate group Channel19 Switch(config-red-aps)# aps working transparent 2/2/0 Switch(config-red-aps)# aps protection transparent 4/2/0 Switch(config-red-aps)# aps y-cable Switch(config-red-aps)# aps far-end group Channel19 ip-address 10.1.2.3 Switch(config-red-aps)# aps enable Switch(config-red-aps)# exit Switch(config-red)# associate group Channel20 Switch(config-red-aps)# aps working transparent 2/3/0 Switch(config-red-aps)# aps protection transparent 4/3/0 Switch(config-red-aps)# aps y-cable Switch(config-red-aps)# aps far-end group Channel20 ip-address 10.1.2.3 Switch(config-red-aps)# aps enable Switch(config-red-aps)# end

Switch# copy system:running-config nvram:startup-config

The following example shows how to configure channels 17-20 on shelf 2 of a dual shelf node.

Shelf2(config)# redundancy Shelf2(config-red)# associate group Channel17 Shelf2(config-red-aps)# aps working transparent 2/0/0 Shelf2(config-red-aps)# aps protection transparent 4/0/0 Shelf2(config-red-aps)# aps y-cable Shelf2(config-red-aps)# aps far-end group Channel17 ip-address 10.3.2.1 Shelf2(config-red-aps)# aps enable Shelf2(config-red-aps)# exit Shelf2(config-red)# associate group Channel18 Shelf2(config-red-aps)# aps working transparent 2/1/0 Shelf2(config-red-aps)# aps protection transparent 4/1/0 Shelf2(config-red-aps)# aps y-cable Shelf2(config-red-aps)# aps far-end group Channel18 ip-address 10.3.2.1 Shelf2(config-red-aps)# aps enable Shelf2(config-red-aps)# exit Shelf2(config-red)# associate group Channel19 Shelf2(config-red-aps)# aps working transparent 2/2/0 Shelf2(config-red-aps)# aps protection transparent 4/2/0 Shelf2(config-red-aps)# aps y-cable Shelf2(config-red-aps)# aps far-end group Channel19 ip-address 10.3.2.1 Shelf2(config-red-aps)# aps enable Shelf2(config-red-aps)# exit Shelf2(config-red)# associate group Channel20 Shelf2(config-red-aps)# aps working transparent 2/3/0 Shelf2(config-red-aps)# aps protection transparent 4/3/0 Shelf2(config-red-aps)# aps y-cable Shelf2(config-red-aps)# aps far-end group Channel20 ip-address 10.3.2.1 Shelf2(config-red-aps)# aps enable Shelf2(config-red-aps)# end

Shelf2# copy system:running-config nvram:startup-config      

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Posted: Thu Jun 3 14:32:56 PDT 2004
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