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Internal
BSC6810 V200R009
Features (OAM)
BSC6810V200R009
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Transmission Backup
IP-Based Transmission over Iub, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP Server
Transmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
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Transmission Backup
Transmission backup is to perform board backup and port backup to ensurereliable transmission. With PIU board backup and port backup enabled, smoothboard or port changeover would happen without interrupting services if any boardor port should fail. The transmission backup feature falls into:
Board backup
E1/T1 port backup
Optical port backup
FE/GE port backup
Load sharing among FE/GE ports
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Type of Interface BoardAbbreviation Full Spelling Silkscreen Bar Code
(For Quotation and
Production)
AEUa RNC 32-port ATM over E1/T1/J1 interface Unit
REV: a
AEUa WP11AEUa
AOUa RNC 2-port ATM over channlized Optical STM-
1/OC-3 Interface Unit REV: a
AOUa WP11AOUa
UOIa RNC 4-port ATM/Packet over Unchannlized
Optical STM-1/OC-3c Interface unit REV: a
UOIa WP11UOIa
PEUa RNC 32-port Packet over E1/T1/J1 Interface
Unit REV: a
PEUa WP11PEUa
FG2a RNC packet over electronic 8-port FE or 2-port
GE ethernet Interface unit REV: a
FG2a WP11FG2a
GOUa RNC 2-port packet over Optical GE ethernet
Interface Unit REV: a
GOUa WP11GOUa
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Backup of Interface Board
board and port backup binding
Using a Y-shaped E1/T1 cable to
connect the local to the peer
Preventing single-point failures
through board backup
Renegotiating the Inverse Multiplexing
over ATM (IMA) or Point-to-Point
Protocol/Multilink Point-to-Point Protocol
(PPP/MLPPP) link with the peer after a
board changeover
AEU/PEU:
NodeB 1
AEU AEU
NodeB 2
0
7
8
15
16
23
24
31
0
7
8
15
16
23
24
31
Active Standby
Y-shaped E1
Y-shaped E1
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Backup of Interface Board
board and port backup apart
Supporting optical port backup and performing
an optical port changeover in case of a failure of a
single optical port
AOU boards: Supporting 1:1 backup
UOI boards: Supporting 1:1 and 1+1backup
Optical port backup based on G.841
Operating optical ports in two optional modes:
Synchronous Digital Hierarchy (SDH) and
Synchronous Optical Network (SONET)
UOI/AOU:
NodeB
AOU
1
0
AOU
1
0E1*N
Active Standby
155-Mbit/s optical fiber
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Backup of Interface Board
FG2/GOU:
board and port backup binding
board and port backup apart
board backup port no backup
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Backup of Interface Board
board and port backup binding
Board and port swap together
Transmitting and receiving data on the ports of the active board, processing services on the activeboard, and maintaining the standby board as a mirror backup of the active board
Disallowing port level changeover and load sharing between Ethernet ports
Performing a board changeover without interrupting services in case of a failure of a port
In this mode, Ethernet IP will be used to terminate both control and user plane data, DEVIP can’t beused.
FG2/GOU:
NodeB1
FG2
0FG2
1
23
4
6
5
7
0
1
23
4
6
5
7
NodeB2
Standby Active
Ethernet
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Backup of Interface Board
board and port backup apart
Using the logical IP address of the FG2/GOU as the user plane address and control planeaddress
Supporting port backup between active and standby boards and load sharing betweenactive ports
Performing a port changeover from the active to the standby in case of a failure of a singleport
Ensuring both board reliability and transmission reliability
FG2/GOU:
NodeB1
FG2
0FG2
1
23
4
6
5
7
0
1
23
4
6
5
7
NodeB2
IP
Active Standby
Data network
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Backup of Interface Board
board backup port no backupUsing the logical IP address of the FG2/GOU as the user plane address and control plane address
Disallowing port backup, treating all ports on the standby board as independent entities, andconfiguring independent IP addresses and properties for them
Supporting load sharing and route forwarding on each port on the standby board
Stopping load sharing on the port in case of a failure of a single port and resuming load sharing onthe port after the recovery of the port
FG2/GOU:
NodeB1
FG2
0
FG2
1
2
3
4
6
5
7
0
1
2
3
4
6
5
7
NodeB2
IP
Active Standby
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Transmission Backup
IP-Based Transmission over Iub, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP Server
Transmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
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Data flow in the BSC6810 is described in the next page
Please refer to other courses for Detailed configuration
IP-Based Transmission
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IP data stream processing
GE switch
SCUa
User traffic process board
(DPUb)
IP
MAC
PHY
UoIP
U-plane process
Signaling process board
(SPUa)
IP
MAC
PHY
UoIPSignaling process
Node B/ Cell
management
SCTP
PHY(E1T1,SDH)
PPP
IP
UDP
PHY(FE,GE)
MAC
IP
UDP
PHY(GE)
MAC
IP
UoIP
GTPU GTPU
SCTP Agent SCTP Agent
PIU
PIE FG2/GOU
USER PLANE CONTROL PLANE
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Transmission Backup
IP-Based Transmission over Iub, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP ServerTransmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
Content
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Alarm Management
V200R009 retains the alarm management mechanism of V100RXXX. As compared with
V100RXXX, V200R009 makes some enhancements and meets some additional serviceability
requirements.
The main control board can use the Joint Test Action Group (JTAG) function to detect a
service board. The Multi-Service Access (MUSA) platform can detect a board through a serial
port. V200R009 can recognize more board states than V100RXXX. The JTAG function can
detect whether a board is unplugged. The emulation panel can indicate that the board is not
installed when a board is unplugged. In 100RXXX, however, the emulation panel displayed a
board as faulty no matter whether the board was unplugged or reset.
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Alarm Management
The degree of alarm correlation and alarm mask is raised. The alarms associated with the
Signaling ATM Adaptation Layer (SAAL) and SCTP links on an Iub interface are masked. A
SAAL link alarm can result from a UNILNK fault, an IMALNK fault, or a FRAATM fault. A
SCTP link alarm can result from a FE/GE fault or a PPP/MP fault. In V100, tremendous
upper layer alarms are reported to the user interface or other specified nodes in case of an
intermittent lower layer transmission failure. V200R009 masks the upper layer alarms,
freeing you from worrying about the various unnecessary alarms and focusing your attention
on the real alarms. V200R009 prevents the unnecessary alarms from being reported to the
BAM, thus mitigating the burden on the BAM.
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Performance Management
In V200R009, the PIU boards collect all transmission link related indexes and upload them to the BAM, and
maintains more transport layer traffic statistics indexes than V100RXXX. It supports:
SDH, IMA, and User Network Interface (UNI) related indexes on the physical layer
ATM Adaptation Layer Type 2 (AAL2) and ATM Adaptation Layer Type 5 (AAL5) related indexes on the ATM layer PPP and MLPPP related indexes on the link layer
User plane and control plane related indexes on the IP layer
BAM PFM
SCUa
FTP
PFM
PIU
VOS
BSP
CFG
Function interface
Message interface
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Transmission Backup
IP-Based Transmission over Iub, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP Server
Transmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
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DHCP Server
On an ATM-based Iub interface, the Operation, Administration and Maintenance (OAM)
information is carried on an IPoA channel. The NodeB obtains its IP address and OAM serverand establishes the OAM channel through Bootstrap Protocol (BOOTP). As the BOOTP server,
the RNC uniquely identifies the NodeB through a Permanent Virtual Circuit (PVC). On an IP-
based transmission network, however, a NodeB can obtain its IP address and OAM server and
establishes the OAM channel on the Iub interface through Dynamic Host Configuration Protocol
(DHCP).
DHCP is defined in RFCs 1533, 1534, 1541, and 1542. It reduces the host configurationcomplexity on a TCP/IP network through dynamic IP address assignment. The IP address
assignment is an important part of an IP solution on an IP Radio Access Network (RAN). The IP
addresses can be configured either manually beforehand or automatically. At present, the RAN
devices do not support automatic IP address assignment. They only support static IP address
assignment.
A DHCP server exists on an PIU board. Each PIU needs to assign IP addresses with an infinitelease time to the associated NodeBs. The DHCP server also needs to configure and maintain the
IDs and IP addresses of the NodeBs. The relevant commands include: ADD EMSIP, ADD
NODEBIP, ADD NODEBESN, ADD PPPLNK, ADD ETHIP, ADD MPGRP, and ADD MPLNK.
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DHCP Process
Server (RNC) NodeB
DHCP Discover, including the gateway
address
DHCP Offer, including the IP address of
the Iub interface, mask, and serveraddress
DHCP Request, including the obtained IP
address (or the IP address of the Iub
interface) and the options to obtain
DHCP Ack , including the extended
options
DHCP
relay
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DHCP Server
The way a DHCP server communicates with a NodeB varies with the port connecting theNodeB to the DHCP server. A NodeB connected to the PIU on a FE port uses its
electronic serial number (ESN) on the main control board as its ID to send a DHCP
request. The PIU then assigns an IP address to the NodeB by the NodeB ESN. For a
NodeB connected to the PIU on a PPP/MP port the DHCP server first looks up the
NodeB by the PPP/MP port. The DHCP server looks up the NodeB by the NodeB ESN if
it fails to find the NodeB by the PPP/MP port.
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Transmission Backup
IP-Based Transmission over Iub, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP ServerTransmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
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Transmission Resource Management
Overview of TRM and TRM Improvements over
V100
Admission Policies and Resource Allocation
IP-Based Transmission
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TRM (Transmission Resource Management):
Transmission Resource Management (TRM) manages the transmission resources for the
Iub, Iur, and Iu interfaces. This include ATM-based and IP-based transmission resources.
TRM performs the following functions:
Managing the physical layer resource as logical transmission resources and
serve the radio layer applications.
Handling resource application, modification, and release for upper layers.
Monitors the usage of the transmission resources in real time and reports any
possible congestion to upper layers for resource scheduling.
Real timely check the QoS status of transmission resources like availability and
transit delay. (for example, by pinging for IP-based transmission resources).
Provides fully distributed resource management.
Overview of TRM – General
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TRM is deployed on SPU board.
The TRM modules are synchronized so that the transmission resources of the entireRNC can be shared in a distributed manner.
Overview of TRM – General
TRM 1
TRM 2
TRM N
Upper Layer
1. Resource application, modification, and release
2. Congestion generation and congestion elimination messages
3. Resource fault indication (for example, indication
of a interface board fault)
TRM poolResource related
notification
Physical layer
carrying
transmission
Active detection
O&M
Configuration
and
maintenance
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The user plane resources on the Iub, Iur, and Iu-CS interfaces include the AAL2 resourcesfor ATM-based transmission and the User Datagram Protocol (UDP) resources for IP-based transmission.
An AAL2 path is configured by using an MML command. The path type options include:
RT R99, NRT R99, RT HSDPA, NRT HSDPA, RT HSUPA, NRT HSUPA. They
correspond to Constant Bit Rate (CBR), Real Time Variable Bit Rate (RT VBR),
Non-Real Time Variable Bit Rate (NRT VBR), and Unspecified Bit Rate (UBR) PVC
on the lower layer.
An IP path concept is introduced to manage IP transmission resources. An IP path is a
logical path determined by the local and peer IP addresses. It is also configured by using
an MML command. It can be configured with a bandwidth and type. The bandwidth isused for admission control. The type is used for mapping between service and transport
layers. According to actual networking, the RNC can set proper policies and select
proper transmission resources to carry services.
Overview of TRM – AAL2 Path and IP Path
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In terms of TRM, V200 shows the following major improvements over V100R008:
QoS path
Adjacent node
Port controller
2-level resource group
Enhancement in mapping between transmission resources and services
Separation of control and resource SPU boards on an Iub interface
Improvements over V100R008
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An IP QoS path is an IP path with an IP QoS priority.
ADD IPPATH: PATHT=QOSPATH, VLANFlAG=DISABLE, PATHCHK=DISABLED;
ADD TRMMAP: ITFT=IUB_IUR_IUCS, TRANST=IP, CCHPRIPATH=QOS_IP_AF4,
SRBPRIPATH=QOS_IP_EF;
Improvements over V100R008 – QoS Path
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V200R009 uses an adjacent node (ADJNODE) to unifiedly identify all transmission
resources between an RNC and its peer (NodeB, QAAL2 switch, or a peer over an Iur,
Iu-CS, or Iu-PS interface), including ATM and IP resources.
The ADJNODE configuration incorporates the AAL2ADJNODE configuration and
IPNODE configuration designed in V100.
An ADJNODE identifies a logical combination of transmission resources. All
associated AAL2 paths and IP paths must be added to the configured
ADJNODE. No bandwidth capacity or congestion threshold is configured for an ADJNODE. The
bandwidth capacity and congestion threshold of an ADJNODE depends on the
bandwidth capacities and congestion thresholds of the paths on the ADJNODE. ADD ADJNODE: NODET=IUB, TMI=0, FTI=0;
Improvements over V100R008 – Adjacent Node
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V200 configures control SPU to physical port. The port can be a UNI, IMA, FRAC, or
ETHER port. When a port is configured, the port controller is specified.
A port controller has a bandwidth, that is, the available user plane bandwidth taking the
bandwidth reserved for the control plane.
ADD PORTCTRLER: CTRLSN=4, CTRLSSN=3;
Improvements over V100R008 – Port Controller
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V200 manages and utilizes transmission resources by separating control SPU andresource SPU. The control SPU is responsible for the link setup signaling. The resource
SPU is responsible for managing all resources on a port. The control SPU needs to
apply for resources from the resource SPU. The control SPU and the resource SPU can
be on either the same or different SPU boards.
With respect to TRM, there appear the concepts of control TRM and resource TRM. The
control TRM is responsible for receiving resource applications from upper layers and
selecting the SPU boards to which the resources belong. The resource TRM is
responsible for allocating and recycling all path resources carried on a specific port.
Improvements over V100R008 – Separation of Control SPUand Resource SPU on an Iub Interface
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An Iub interface needs to carry different services on multiple PVCs of different types.
They usually share the lower physical layer because the Iub interface is deficient in
transmission resources. This requires ATM overbooking. ATM overbooking allows each
PVC to utilize up to the physical layer bandwidth. To ensure the quality of admitted
services, the sum of the bandwidths allocated to the multiple PVCs for admission control
shall not exceed the physical layer bandwidth. This is the function of group bandwidth
management.
In V200, a resource group is totally a logical concept. It does not correspond to ports.
V200 provides group bandwidth management for two levels of hub NodeBs.
Improvements over V100R008 – 2-Level Resource Group
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In V100R008 resource mapping is based on transmission resources.
V200R009 configures primary and secondary paths by service. The following lists some contents of a TRMMAP table.
Improvements over V100R008 – Enhancement in Mapping Between
Transmission Resources and Services
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Transmission Resource Management
Overview of TRM and TRM Improvements over V100
Admission Policies and Resource Allocation
IP-Based Transmission
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Admission Policies
In V200R009, the admission policies can vary with scenarios.
Admission by configured bandwidth: All resource applications can be approved if the available bandwidth permit.
Typical application scenarios: common channel setup on an Iub interface, Radio
Resource Control (RRC) connection setup
Admission by reserved handover bandwidth:
The bandwidth to apply for cannot exceed the difference between the available
bandwidth and the reserved handover bandwidth. That is, a certain amount of bandwidth
is reserved for handover.
Typical application scenarios: Radio Access Bearer (RAB) setup and modification on an
Iub interface, F2D, F2H, D2H
Admission by preset congestion threshold:
The bandwidth to apply for cannot exceed the difference between the available
bandwidth and the bandwidth reserved for congestion avoidance. That is, a certain
amount of bandwidth is reserved for congestion avoidance.
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Transmission Backup
IP-Based Transmission over Iur, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP Server
Transmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
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Dynamic Batch Configuration – General
One can execute a configuration script file offline. When switched tothe online mode, the BAM immediately packs all data modificationrecords in a command frame and sends the command frame to theRNC host. The RNC host then puts all the records in the commandframe into effect without affecting services. This is dynamic batchconfiguration.
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User
Bam
Send MML Commands
Execute MML commands
Send executing results
SET ONLINE: SRN=ALL, ET=NOW;
RNC Host
Send configuration bin messages
Implement data configuration
Send response messages
Construct bin messages and cache
Send executing result
Dynamic Batch Configuration – Procedure
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Select whether to enable Dynamic Batch Configuration when you want to modify allsubracks offline. If you do not enable Dynamic Batch Configuration, the RNC proceeds
as it does in V100. If you enable Dynamic Batch Configuration, the RNC starts the
procedure of Dynamic Batch Configuration.
Dynamic Batch Configuration – Implementation
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After the bulk configuration, use the SET ONLINE command to switch to the online mode and
select whether to put the data into effect now.
If you want to put the data into effect later, the RNC proceeds as it does in V100. You can putthe data into effect by resetting the system.
If you put the data into effect now, the BAM generates a command frame of Dynamic BatchConfiguration and sends the command frame to the RNC host. The RNC host then puts allthe records in the command frame into effect without affecting services.
Dynamic Batch Configuration – Implementation
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The offline commands cannot be executed in the Dynamic BatchConfiguration mode.
At most 1,000 MML commands can be executed at one time in the DynamicBatch Configuration mode.
The RNC can be set to the offline mode and can implement Dynamic Batch
Configuration only when the data is consistent between the BAM and RNChost. The RNC can be set to the offline mode but cannot implementDynamic Batch Configuration if the data on the BAM is different from that onthe RNC host.
Dynamic Batch Configuration – Points for Attention
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Transmission Backup
IP-Based Transmission over Iub, Iur, and Iu Interfaces
Alarm/Performance Management
DHCP Server
Transmission Resource Management
Bulk Configuration Management
Data Synchronization Between Dual Servers/Security Monitoring
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Enhancements in Data Synchronization Between Dual Servers
V100 uses the SQL Server replication mechanism to synchronize databetween dual BAM servers. The customer service engineers may have manycomplaints about this method of data synchronization.
It takes a fairly long time of almost 40 minutes to finish the initial datasynchronization. The dual BAM servers have to wait about 40 minutes to swapagain after a swap.
The data synchronization between the dual BAM servers is prone to problemsthat are not readily soluble.
The data synchronization is a very complicated mechanism. Some problemswith data synchronization are even beyond Microsoft's power.
The data synchronization mechanism has many restrictions and is
inconvenient for development. V200 optimizes the mechanism of the data synchronization between dual BAM
servers. In V200, Huawei throws away the SQL Server replication mechanismand uses a self-developed data synchronization mechanism instead.
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Enhancements in Data Synchronization Between Dual Servers
The standby BAM initiates a data synchronization request.
The active BAM locks the database. It backs up the database in a file. It then unlocks thedatabase and returns an acknowledgement message to the standby BAM. All accesses tothe database are blocked during the lock period. The lock period lasts approximately 15seconds in full RNC configuration. The lock occurs and blocks accesses only when thestandby BAM initiates a data synchronization request. The influence is very small.
After unlocking the database, the active BAM records all accesses to the database in
sequence. The standby BAM uses the File Transfer Protocol (FTP) to obtain the database backup file.
The standby BAM locks the database. It restores the database from the backup file and thenunlocks the database. Up to now, the initial data synchronization ends.
The standby BAM regularly obtains the database operation commands from the active BAMand executes these commands on its own database. In this way, the standby BAM is
synchronized with the active BAM in real time. To prevent data discrepancy, the active and standby BAM servers perform an initial data
synchronization and start a new data synchronization process at 4:00 a.m. every morning.
The initial data synchronization procedures can be viewed by using the STR DATASYNC command.
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Enhancements in Data Synchronization Between Dual Servers
As a result,
The time required for initial data synchronization is controlled within
two minutes. Test shows that the initial data synchronization consumes
90 seconds in full configuration and less than 60 seconds in initial
configuration.
The real-time synchronization occurs at an interval of one second.
Normally all data modifications are synchronized to the standby BAM
in real time.
The simplified data synchronization process is easy to control.
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Enhancements in Security Monitoring
In V100, the Bamservice restarts the server immediately when theSecuritymanager fails. In V200, the Bamservice first attempts torestart the Securitymanager when the Securitymanager fails. TheBamservice restarts the server only when the Securitymanager failsfive times within 30 minutes.
V200 supports soft resetting and hard resetting. The soft resetting
is to reset the BAM software without resetting the server. The hardresetting is to reboot the computer.
V200 allows you to decide whether to reset the active BAM or toreset the standby BAM.
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