1830 VWM
Overview
The 1830 VWM constitutes the backbone of the wireless fronthaul solution by establishing an end-to-end transport line between RRHs and the centralized BBUs.
At the cell site: The 1830 VWM TLU provides the colorization of the black and white signals and the 1830 VWM PMU provides the add-drop functionality. The 1830 VWM ITP is an integrated TLU and PMU device that provides wavelength translation and passive wavelength division multiplexing capabilities.
At the central office: The 1830 VWM TLUs and 1830 VWM PMUs are connected to an 1830 VWM OSU to form the central management hub for OSC signals transported using the out-of-band channels from the peripheries. The 1830 VWM OSU provides the management interface to the NFM-P.
Supported functions
The NFM-P provides the following FCAPS functions for 1830 VWM devices, as listed in Table 6-1, NFM-P support for 1830 VWM devices.
Table 6-1: NFM-P support for 1830 VWM devices
|
Function |
Support |
References |
|---|---|---|
|
NE discovery |
1830 VWM device discovery Enable SNMPv3 management Configure device mediation Configure a discovery rule |
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IPv6 device management |
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CLI session |
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Device object |
Shelf craft port configuration |
To configure shelf craft port IP address on an 1830 VWM device |
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Shelf, card, and port objects |
Shelf configuration Restart shelf Lamp test |
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Card object configuration 1830 VWM OPS – OSM protection switching |
1830 VWM OPS − OSM protection switching and bi-directional protection switching | |
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Port object configuration RFLM port configuration CPRI monitoring using the 1830 VWM TLU 9M MON ports CPRI rate configuration for a CDR channel CDR channels Mapping of ports and CDR channels associated with it. SFP frequency |
Remote fiber link monitoring in 1830 VWM devices To configure an OSC port of an 1830 VWM OSU as a RFLM port To perform CPRI monitoring using 1830 VWM TLU 9M MON ports | |
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Link management |
Equipment connection topology |
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Alarm management |
Alarm severity configuration |
See Procedure “To configure alarm severity and deletion behavior” in the NSP System Administrator Guide |
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SNMP traps |
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SNMP trap destination configuration |
1830 VWM node documentation | |
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SNMP trap restoration |
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Service test manager |
PRBS test |
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NTP support |
Configure NTP |
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Backup and restore |
NE backup and restore |
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Software upgrade |
1830 VWM software upgrade Image software database |
To configure a software upgrade policy |
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Statistics management |
Statistics management |
See the procedure “To assign the default 1830 VWM OSU performance management policy to 1830 VWM devices” in the NSP NFM-P Statistics Management Guide |
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Counters |
NSP NFM-P Statistics Management Guide | |
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DDM data retrieval |
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Inventory management |
Inventory management |
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License management |
View the NFM-P license information |
See the section on software and license configuration procedures in the NSP System Administrator Guide for information about creating a license point inventory. |
1830 VWM discovery
The 1830 VWM discovery rule requires the SNMPv3 read, write, and security access mediation policies and SNMPv2 trap access mediation policy. The NFM-P supports 1830 VWM device management using IPv4 and IPv6. See To enable SNMPv3 management and discover an 1830 VWM device for more information about 1830 VWM SNMPv3 management, device mediation, and discovery.
Shelf, card, and port objects
Shelf objects
NFM-P supports the configuration of the 1830 VWM shelves. See To configure an 1830 VWM shelf for more information about 1830 VWM shelf configuration. The 1830 VWM OSU shelf components are sorted on the equipment tree, based on the alphabetical order of the shelf name and not based on the shelf number.
Warm and cold restart
You can perform either a warm or cold restart of the 1830 VWM OSU using the NFM-P. A warm restart restarts the software without unnecessary reconfiguration of the hardware. Therefore the warm restart operation does not affect data transmission. The cold restart restarts the software and reconfigures all hardware from the internal database. See To restart an 1830 VWM shelf for more information about performing a warm or cold restart.
Lamp test
The RMUs are automatically assigned a shelf ID based on detection by the 1830 VWM OSU. When you look at a stack of installed units in a rack, it is not obvious which shelf ID belongs to which physical unit. You can perform a lamp test by configuring the Lamp Test parameter as Active in the Shelf Specifics tab of the Shelf (Edit) form. The LEDs on the selected unit flash, enabling quick identification of a particular unit in a large array.
Shelf craft port
NFM-P supports the configuration of the craft port parameters at the NE level or shelf level.
On the equipment tree, right-click on the 1830 VWM device object and choose Properties. The Network Element (Edit) form opens. The Shelf Craft Port tab in the Network Element (Edit) form lists the craft port parameters of all the shelves except the OPS shelf. You can configure the craft port IP address, craft port gateway, and the craft port IP prefix length.
The Shelf Craft Port tab in the Shelf (Edit) form displays craft port parameters of the specific shelf in the Shelf Craft IP Details panel. You can configure the craft port IP address, craft port gateway, and the craft port IP prefix length. The Shelf Craft Port tab is not available for the OPS shelf.
See To configure shelf craft port IP address on an 1830 VWM device for more information about configuring the craft port parameters.
Card objects
The card objects are configured automatically when the 1830 VWM shelf is configured. To view the card properties, you can right-click on the Network→1830 VWM-OSU NE→Shelf→Card Slot object and choose Properties. The Card Slot (Edit) form opens.
Port objects
The port objects are configured automatically when the 1830 VWM shelf is configured. See To configure 1830 VWM ports for more information about port configuration.
The operational state of the ports can change due to traffic impact. For example, fiber pull and so on. Because of the missing traps, the NFM-P cannot automatically update the state change values from the network. You need to perform manual resynchronization of the ports to get the real time value.
Port label – SNMP and CLI
NFM-P displays both the Name and CLI Name parameters to identify the ports in the General tab of the Physical Port (Edit) form. The Name parameter displays the value derived from the SNMP; for example, 3/1/15 where 15 is the port number. The CLI Name parameter displays the value in the alphanumeric format derived from the CLI; for example, 3/1/C8 where C8 is the port number.
NFM-P displays the CLI Name parameter to identify the ports in the Info tab of the Alarm Info form. The Alarmed Object Name parameter value appears in the alphanumeric format derived from the CLI and identifies the port object.
SFP frequency
NFM-P supports the configuration of SFP transmission frequency on the line and client ports of the TLU 9 and TLU 9M cards. You can configure the Sfp transmission Frequency parameter on the Sfp Details panel in the Sfp Specifics tab of the Physical Port (Edit) form.
CPRI channel monitoring
NFM-P supports the following CPRI monitoring function using the 1830 VWM TLU 9M MON ports:
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in-service monitoring of interference on a specific CPRI channel
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in-service monitoring of a downlink signal on a specific CPRI channel
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allows injection and extraction of C and M traffic to commission RRH
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perform loopback tests on RRH and monitor round-trip integrity
See To perform CPRI monitoring using 1830 VWM TLU 9M MON ports for more information about performing the CPRI monitoring function.
CDR channels
The CPRI interface supports various line rates. When you configure a CPRI rate, the 1830 VWM treats the corresponding client and line ports (C1 and L1, C2 and L2, and so on) as a CDR Channel. A CDR channel is a traffic connection between two ports on the first slot of a TLU. The TLU slot has nine CDR channels. The ports and the CDR channel mapping is preconfigured on the 1830 VWM TLU device and you cannot change the mapping.
You can configure a CPRI rate for a CDR channel using the NFM-P. See To configure a CPRI rate and channel management for a CDR channel on an 1830 VWM TLU or ITP card slot for more information about configuring a CPRI rate for a CDR channel. The 1830 VWM TLU ports show the mapping of the ports and the CDR channels associated with it. See To view the channels associated with a 1830 VWM TLU port for more information about viewing the channel-to-port mapping.
SNMP traps
The NFM-P supports traps associated with alarm management and the traps related to configuration changes on the 1830 VWM Release 8.3 and later. You can perform the configuration changes for the 1830 VWM devices using the NFM-P or CLI and the data is synchronized.
SNMP trap restoration
The NFM-P retrieves the last trap sequence number sent from all network elements at a configurable interval. This interval is configurable on a per resource group basis. Resource groups allow the user to configure the communications behavior of a group of network elements. By default, the core resource group includes all network elements, and verifies the trap sequence number every 4 minutes. The NFM-P compares that sequence number with the sequence number of the last trap it received from that network element. If they do not match, NFM-P will request only the missing traps from the network element. If NFM-P is missing more than 200 traps from a network element, or if the network element no longer has the missed trap, the NFM-P will request a full resynchronization on that network element rather than just request the missing traps. This behavior occurs by default and is not configurable. See the NSP Planning Guide for more information.
Synchronization of operational state
NFM-P updates the operational state dynamically to display the Operational State parameter as Down when LOS or LOF alarms are generated from the 1830 VWM device and Up when the LOS or LOF alarms are cleared from the 1830 VWM device.
Equipment connection topology
The equipment connection topology provides internal connections between two ports within a shelf or external connections between two ports in two different shelves.
There are two types of equipment connection topologies:
Note: The far end address is not displayed because it is applicable to the far end type, External. You cannot select the port which is already participating in any of the L1 or L2 topology links. The used ports are not listed in the selection window of the far end port.
Layer 1 connections
Layer 1 connections are the physical connections of fibers or LAN cables. NFM-P supports the configuration of layer 1 connections.
Layer 2 connections
Layer 2 connections are derived from the Ethernet RSTP attributes. NFM-P supports the discovery of layer 2 connections.
The characteristics of layer 2 connections are:
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Although the NFM-P allows the configuration and discovery of misconfigured links, the validity of the links is not guaranteed.
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If incomplete links are discovered as part of 1830 VWM device discovery, and the links are listed in the Physical Links→VwmOSU Links tab of the Network Element (Edit) form, delete the link and re-configure the link with valid interfaces. The incomplete links are discovered to identify erroneous links and rectify them.
Device-level physical topology map
NFM-P supports device-level physical topology map at the 1830 VWM device-level that displays the 1830 VWM shelves, the internal links within the shelves, and the external links between the shelves.
You can use one of the following options to open the device-level physical topology map:
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Right-click on the 1830 VWM device object on the navigation tree and choose Topology View from the contextual menu.
Backup and restore considerations for 1830 VWM
Software upgrade
NFM-P supports in-service software upgrades (ISSU) of the 1830 VWM.
See To configure a software upgrade policy for more information about how to configure a software upgrade policy.
See To perform an 1830 VWM on-demand software upgrade for more information about how to perform an 1830 VWM on-demand software upgrade.
Image software database
NFM-P lists the respective active and inactive 1830 VWM software images in the Shelf ISD tab of the OSU, PMU, TLU, and ITP Shelf (Edit) forms. If the ISD status is active, it is the software load currently active on the system. If the ISD status is inactive, it is the previous software load.
1830 VWM inventory management
You can list the 1830 VWM card inventory information using the VWM MS Card object. You can list the 1830 VWM CDR channel inventory information using the CDR Channel object. See Chapter 17, Inventory management for more information about inventory management.
1830 VWM OPS − OSM protection switching and bi-directional protection switching
The OPS OSM card of the 1830 VWM OPS shelf provides optical protection switching and the OPS OSM-DSV card provides bi-directional protection switching for both Tx and Rx. You can configure up to four OPS OSM cards or OPS OSM-DSV cards, or a mix of both on an 1830 VWM OPS shelf. The OPS OSM-DSV card is intended for use in a C-RAN hub. See To configure optical protection switching on an 1830 VWM OPS shelf and To configure bi-directional protection switching on an 1830 VWM OPS shelf for more information.
The OPS shelf supports the following external switch commands from the 1830 VWM OSU:
OPS protection audit entity
The Protection Audit Entity (PAE) checks the consistency of the receive selectors in the near-end and far-end optical switches.
The following events are audited:
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if one of the associated optical switches generates an event when it transits from a state in which both the inputs are failed to a state in which one or no input is failed
NFM-P supports the configuration of a PAE on the 1830 VWM OSU. See To configure an OPS protection audit entity on an 1830 VWM OSU shelf for more information about configuring a PAE.
You must activate a PAE configured on an OSU. Upon activation, the PAE attempts to read the data from the near-end and far-end selector. If the data is not accessible, the PAE generates an AUDITBLOCK alarm on the optical protection switch module. You can deactivate an active PAE, which stops the auditing functionality and clears all involved alarms. You can delete an inactive PAE, which removes all associated configurations from the OSU database. See To activate or deactivate a PAE for more information.
1830 VWM OPS − NTP
You can view the NTP parameters and server for the 1830 VWM OPS shelf by navigating to the NTP→General and NTP→Server tabs of the Shelf (Edit) form. The NTP Enabled check box is selected, by default, and cannot be configured. The Shelf Time parameter is read-only.
Statistics management
Table 6-2, Supported statistics lists the supported statistics.
Table 6-2: Supported statistics
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1830 VWM devices |
Supported statistics |
|---|---|
|
1830 VWM PMU |
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1830 VWM TLU 9 and TLU 9M |
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1830 VWM TLU 200 |
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1830 VWM OPS |
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1830 VWM SMM |
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1830 VWM ITP |
See the procedure “To assign the default 1830 VWM OSU performance management policy to 1830 VWM devices” in the NSP NFM-P Statistics Management Guide for more information about assigning the default PM policy.
DDM data retrieval
See 1830 VWM − DDM data retrieval and To retrieve 1830 VWM DDM data for more information about DDM data retrieval.