Configuration Guide for Cisco NCS 1001, IOS XR Release 25.x.x

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Configuration Guide for Cisco NCS 1001, IOS XR Release 25.x.x

In-line amplifier

Updated: July 27, 2026

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This topic describes how in-line amplifier mode uses the pre-amplifier path, disables the booster path, and reports port power values for supported NCS 1001 slots.

The optical amplifier module (NCS1K-EDFA) can be configured in In-line amplifier (ILA) mode. ILA mode is used when it is not possible to connect to terminal nodes with a single span. ILA mode is supported only in slots 1 and 3.

ILA mode supports only the operation of pre-amplifier in both directions. The booster module is switched off in ILA mode. ILA mode supports gain range 1 and 2 of the pre-amplifier and provides 23 dBm output power pre-amplification.

In ILA mode, the LINE-RX and COM-TX ports of the optical amplifier module are enabled, while the LINE-TX and COM-RX ports are disabled. The OCM reports the values for LINE-RX and COM-TX ports, and the values for LINE-TX and COM-RX ports are set to –40.00 dBm. In ILA mode, the LINE-RX port terminates on the optical amplifier module's LINE-RX, and the LINE-TX port terminates on the external OSC module (15216-FLD-OSC=).

Configure an amplifier module in ILA manual mode

When the amplifier is set to ILA, all the configurations are performed only on the pre-amplifier. After the node is set to ILA, the amplifier gain, RX-low threshold, and the amplifier tilt can be configured on the pre-amplifier.

Procedure

Use these commands to configure the required settings.

configure hw-module location 0/RP0/CPU0 slot slot-number ampli node-type value commit end controller controllertype Rack/Slot/Instance/Port ampli-control-mode {automatic | manual} ampli-gain value rx-low-threshold value ampli-tilt value commit end

Example:

In this sample, the amplifier module is configured in ILA manual mode. The node type is set to ILA. This parameter switches off the booster side and activate safety between slots 1 and 3.


configure
            hw-module location 0/RP0/CPU0 slot 3 ampli node-type iLA
            commit
            end
            controller ots 0/3/0/0
            ampli-control-mode manual
            ampli-gain 200
            rx-low-threshold -300
            ampli-tilt -10
            commit
end

The configuration is committed and the optical module uses the requested settings.

Configure an amplifier module in ILA automatic mode

The configurations performed on the amplifier module in ILA automatic mode are similar to the configurations performed on the terminal node. The configurations are performed only on the pre-amplifier as the booster is switched off in ILA mode.

Procedure

Use these commands to configure the required settings.

configure hw-module location 0/RP0/CPU0 slot slot-number ampli grid-mode value node-type value commit end controller controllertype Rack/Slot/Instance/Port ampli-control-mode {automatic | manual} ampli-channel-power value ampli-tilt value rx-low-threshold value channel-power-max-delta value ampli-gain value ampli-gain-range {normal | extended} commit end

Example:

In this sample, the amplifier module is configured in ILA automatic mode.

configure
            hw-module location 0/RP0/CPU0 slot 3 ampli
            grid-mode 50GHz
            node-type iLA
            commit
            end
            controller ots 0/3/0/0
            ampli-control-mode automatic
            ampli-channel-power 30
            ampli-tilt -10
            rx-low-threshold -331
            ampli-gain 220
            ampli-gain-range extended
            commit
      end

This is a sample of show running-config command.


line console
      exec-timeout 0 0
      !
      line default
      exec-timeout 0 0
      session-timeout 0
      !
      ntp
      server 10.58.228.1
      update-calendar
      !
      hw-module location 0/RP0/CPU0 slot 1
      ampli udc-vlan 11
      ampli grid-mode 50GHz
      ampli node-type ILA
      !
      hw-module location 0/RP0/CPU0 slot 3
      ampli udc-vlan 10
      ampli grid-mode 50GHz
      ampli node-type ILA
      !
      interface MgmtEth0/RP0/CPU0/0
      ipv4 address 10.58.229.143 255.255.252.0
      !
      interface MgmtEth0/RP0/OSC1/0
      shutdown
      !
      interface MgmtEth0/RP0/OSC2/0
      shutdown
      !
      interface MgmtEth0/RP0/OSC3/0
      shutdown
      !
      controller Ots0/1/0/0
      ampli-tilt -12
      ampli-control-mode automatic
      ampli-channel-power 22
      channel-power-max-delta 45
      !
      controller Ots0/1/0/1
      rx-low-threshold -250
      !
      controller Ots0/3/0/0
      ampli-tilt -12
      ampli-control-mode automatic
      ampli-channel-power 22
      channel-power-max-delta 45
      !
      controller Ots0/3/0/1
      rx-low-threshold -250
      !
      router static
      address-family ipv4 unicast
        0.0.0.0/0 10.58.228.1
      !
      !
      netconf-yang agent
      ssh
      !
      ssh server v2
      end

The configuration is committed and the optical module uses the requested settings.