03-Ore006201 Ip Planning in Cbss System Issue2.0(Bsc6680)-20070724

HUAWEI TECHNOLOGIES CO., LTD.

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IP Planning in CBSS System (BSC6680)

HUAWEI TECHNOLOGIES CO., LTD. Page 2All rights reserved

Chapter 1 Basic KnowledgeChapter 1 Basic Knowledge

Chapter 2 Protocol StackChapter 2 Protocol Stack

Chapter 3 IP Address in CBSSChapter 3 IP Address in CBSS


TCP/IP Protocol Stack

Provide application program for network interfaces

Application layer

Network layer

Interconnection layer

Data-link Layer

Establish terminal to terminal connection

Addressing and route selecting

Physical media access

Binary data flow transmission

HTTP, Telnet, FTP, TFTP, Ping, etc

TCP/UDP

IPICMP

Ethernet, IEEE802.3, PPP, HDLC, FR, etc

Interfaces and wires/cables

Physical Layer

ARP RARP


Encapsulation

When an application sends data using TCP, the data is sent down the protocol stack, through each layer, until it is sent as a stream of bits across the network. Each layer adds information to the data by prepending headers (and sometimes adding trailer information) to the data that it receives.

We could draw a nearly identical picture for UDP data. The only changes are that the unit of information that UDP passes to IP is called a UDP datagram, and the size of the UDP header is 8 bytes

This picture shows the process. The unit of data that TCP sends to IP is called a TCP segment. The unit of data that IP sends to the network interface is called an IP datagram. The stream of bits that flows across the Ethernet is called a Ethernet frame.


Ethernet Frame Structure6-byte Destination MAC address

6-byte Source MAC address

2-byte length

Ethernet

Frame

14-Byte Ethernet header

20-Byte IP header (If no options)

20-Byte TCP header or 8-bit UDP header

Payload

4-Byte Ethernet Tail (CRC)

4-bit version :Now is IPV4

4-bit header length

8-bit type of service (TOS)

16-bit total length (in bytes)

16-bit Identification :For IP fragment Purpose

3-bit flag

13-bit fragment offset

8 bit Time To Live (TTL)

8-bit protocol (1: I C M P, 2: I G M P,6: TCP, 1 7: UDP)

16-bit header checksum

32-bit source IP address

32-bit destination IP addressOptions (If any)


IP Fragmentation

On an Ethernet the maximum amount of data in a frame is 1500 bytes which leaves 1472 bytes for our data (assuming 20 bytes for the IP header and 8 bytes for the UDP header).

Ethernet

Frame

14-Byte Ethernet header

20-Byte IP header (If no options)

20-Byte TCP header or 8-bit UDP header

Payload

4-Byte Ethernet Tail

46~1500 B

ytes


MAC/Physical Address & MAC Frame

MAC is identification of equipment. It is commonly fixed by hardware.

MAC address is composed of 48 bits. The vendor ID of Huawei products is 0x00E0FC.

0xFFFFFFFFFFFF is broadcast MAC address.

00-E0-FC-01-23-45

Vender Serial Number

24 bits 24 bits

Destination MAC Source MAC CRCPayload

MAC Frame


ARP( Address Resolution Protocol)

ARP Request is broadcast message. ARP Reply is mono-cast Message.

I want to send a packet to 10.0.0.3, so I must send ARP request to get MAC address of this host.

IP:10.0.0.1/24MAC:00-E0-FC-00-00-

10

AR

P R

equest

ARP Request ARP Request ARP RequestARP Request

IP:10.0.0.2/24MAC:00-E0-FC-00-00-

11

IP:10.0.0.3/24MAC:00-E0-FC-00-00-

12

I received an ARP request from 10.0.0.1. It wants to get MAC address of 10.0.0.3. Since this is not my address, I will ignore it.

I received an ARP request from 10.0.0.1. It wants to get my MAC address .I must reply it.

ARP Reply

Content: Hi 10.0.0.3 .I am

10.0.0.1 .I want to get your

MAC address

Content: Hi 10.0.0.1 .This is my MAC address 00-E0-FC-00-00-12

Host 1 Host 2 Host 3

LAN:


IP Address & Subnet Mask

IP address identifies a host in the network. The length of IP address is 4 Bytes. Usually, IP address is presented in this way: 129.12.3.4.

IP address must be configured with a mask. Mask defines how many bits in IP address is used to define network or

subnet address.

Network ID Host IDIP Address

172.100.30.12172.100.30.12IP addressMask

10101100. 01100100. 00000000.0000000010101100. 01100100. 00000000.00000000

Decim

alD

ecimal

255.255.0.0 (24)255.255.0.0 (24)

10101100. 01100100. 00011110.0000110010101100. 01100100. 00011110.00001100

11111111. 11111111. 00000000.0000000011111111. 11111111. 00000000.00000000

Binary

Binary

172.100.0.0Network ID

AN

DA

ND

Question:

1) 192.168.0.100/ 255.255.255.248 and 192.168.0.200/ 255.255.255.248 can communicate directly?

2) What about 80.8.213.6/255.254.0.0 and 80.9.117.153/255.254.0.0?


Special IP Address

Network ID Host ID Address type Use

AnyCompletely“0”

Network addressRepresenting a network

Segment

AnyCompletely“1”

Broadcast addressAll the nodes of a specially

designated network segment

127 any Loop back address Loop test

Completely“0” Any networksHuawei Quidway router used to Designate default routes

Completely“1” Broadcast addressAll nodes of

Local network segment

Question: Who know how many IP address are reserved for private IP address?


Why do we plan subnet?

Because of broadcast messages, the service quality will decrease when the number of hosts increases in the network.

When the network is divided into several subnets, the unnecessary communication can be avoided.

There are too many broadcast messages in the network. We have to separate into two subnets.

Network ID:192.168.0.0Subnet Mask:255.255.254.0Broadcast IP:192.168.1.255Available IP range:192.168.0.1~192.168.1.254



Router


How to plan a subnet?

Reduce the number of bits occupied for host address. And these additional bits can be used to define subnet.

The number of subnets will increase with the increase of the bits used to define subnet. At the same time, the number of hosts in the subnet will decrease.

80.9.130.1/1580.9.130.1/15IP Address

Subnet Mask

And Operation

And Operation

01010000. 00001000. 00000000.00000000

De

cimal

De

cimal

255.254.0.0255.254.0.0

01010000. 00001001. 10000010.0000000101010000. 00001001. 10000010.00000001

11111111. 11111110. 00000000.0000000011111111. 11111110. 00000000.00000000

Bina

ryB

inary

80.8.0.0Network ID

IP Address

Subnet Mask


An Example of Subnet Planning

The IP addresses of Class B in the network segment 191.38.0.0/16 are allocated to Company A. The company can plan the subnet for each department in the company.

The company consists of 35 departments, and the host number of each department ranges between 100 to 800.

First, we shall define how many bits could be occupied by Host ID. In this case ，the number of hosts are less than 1000. So, 10 bits are enough to be reserved for Host ID. And the number of available Hosts are 2^10 － 2= 1022>1000.

The remaining bits could be used for Network ID now. In this case, 6 bits remains. So the number of subnets are 2^6 ＝ 64, and the subnet mask is: 255.255.252.0.

To summarize, each department now occupies a network segment as below.

Department ID Subnet ID Network Segment

0 191.38.0.0 191.38.0.1~191.38.3.254

1 191.38.4.0 191.38.4.1~191.38.7.254

2 191.38.8.0 191.38.8.1~191.38.11.254

….. …… ……

63 191.38.252.0 191.38.252.1~191.38.255.254

Any simple way to finish this?


Router and its Function

Routers are used for network interconnection. Routers must have:

Two interfaces or more Protocols reaching network layer at least Storing, forwarding and routing function

Routers core function is to implement network interconnection Forward packets Route (routing): create, refresh and search routing table Rate match between networks Isolate network, prevent network storm, designate access rule (firewall) Interconnect dissimilar network

Routing is shown as below:

Destination Subnet Subnet Mask Next Hop Address

0.0.0.0 0.0.0.0 10.0.0.1

100.0.0.0 255.255.255.0 20.0.0.1

200.0.0.0 255.255.255.0 30.0.0.1


IP Message Transmit in Router

10.12.3.64

00-E0-FC-00-00-11192.12.3.64

00-E0-FC-00-00-32

192.12.3.52

00-E0-FC-00-00-64

10.12.3.27

00-E0-FC-00-00-23

00-E0-FC-00-00-23192.12.3.64

00-E0-FC-00-00-64192.12.3.64

00-E0-FC-00-00-32192.12.3.64

Interface A Interface B

Host A Host B

IP Packet

Check the route table found:

192.12.3.0 255.255.255.0 10.12.3.27

IP Packet


NAT

Question: How does Private IP access internet?

1. Even if we can configure outgoing route for the private IP address, but there is no return route for it in internet, so private IP address cannot access internet by route configuration. How does Private IP access internet?2. NAT function can implement below translation: <Private address+Port>←→<Public address+Port>. Then the private IP address can access internet.


Dynamic Routing

20 bytes IP header8 bytes UDP header

RIP message

8-bit command (1-6)

8-bit version (1)

16-bit all 0

16-bit address family(2)

16-bit all 0

32-bit IP address

32-bit all 0

32-bit all 0

32-bit metric (1-16)

Up to 24more routes, with same format as previous 20 bytes

OSPF (Open Shortest Path First )

RIP (Routing Information Protocol )

OSPF is a newer alternative to RIP. OSPF is a link-state protocol, In a link-state protocol a router does not exchange distances with its neighbors. Instead each router actively tests the status of its link to each of its neighbors, sends this information to its other neighbors, which then propagate it throughout the autonomous system. Each router takes this link-state information and builds a complete routing table. Besides being a link-state protocol instead of a distance-vector protocol, OSPF has many other features that make it superior to RIP. With most router vendors supporting OSPF, it will start replacing RIP in many networks.

RIP is a distance-vector protocol. The term distance-vector means the messages sent by RIP contain a vector of distances (hop counts). Each router updates its routing table based on the vector of these distances that it receives from its neighbors.


VRRP (Virtual Router Redundancy Protocol)

Virtual IP Address10.100.10.1

Network

Host 1 Host 3Host 2

10.100.10.2 10.100.10.3

Master Backup

LAN 1

RouerA RouterB

Ethernet

10.100.10.1 10.100.10.1 10.100.10.1

Ethernet

10.100.10.1

Network

Host 1 Host 3Host 2

LAN 110.100.10.1

10.100.10.1 10.100.10.1

RouterA

Use VRRP is more safe






CDMA2000 1X Protocol Stack

Air

L3 Sig.

LAC

MAC

Air

MAC

User TrafficFrame

Abis Sig.

L3 Sig.

TCP

IP

AAL5

ATM

E1/SDH0

Abis Traffic

AAL2

ATM

User TrafficFrame

E1/SDH0

A7

L3 Sig.

TCP

IP

AAL5

ATM

E1/SDH0

A3 Sig.

L3 Sig.

TCP

IP

AAL5

ATM

AAL2

ATM

User TrafficFrame

E1/SDH0

E1/SDH0

A11

L3 Sig.

UDP

Ethernet

IP

A10

GRE

IP

SDH0/FE

DataPacket

Ethernet

A1

L3 Sig.

SCCP

MTP3

MTP2

MTP1

E1/SDH0

A2

PCM/UDI

E1/SDH0

VoiceFrame

DataPacket

L3 Sig.

IPC

A9

A8

UoIP

GE

GE

Phys. Layer

Phys. Layer

A1p

L3 Sig.

SCCP

IP

Phys. Layer

A5

PCM/UDI

E1/SDH0

CircuitSwitch Data

ISLP

A2p

UDP

Phys. Layer

VoiceFrame

IPv4

Abis Sig.

L3 Sig.

TCP

IP

E1/FE

Abis Traffic

User TrafficFrame

E1/FE

UDP

IP

Link Layer

Link Layer

M3UA

SCTP/SUA

A7/A3 Sig.

L3 Sig.

SCTP

IP

E1/SDH0

A3 Traffic

User TrafficFrame

E1/FE

UDP

IP

Link Layer

Link Layer

A3 Traffic

SDH0/FE

Ethernet

Ethernet


CDMA2000 1X EVDO Protocol StackAir

Application Layer

Session

Connection

Security

MAC

Air

MAC

User TrafficFrame

Abis Sig.

L3 Sig.

TCP

IP

AAL5

ATM

E1/SDH0

Abis Traffic

AAL2

ATM

User TrafficFrame

E1/SDH0

A12

L3 Sig.

UDP

IP

SDH0

Ethernet

A13

L3 Sig.

TCP/UDP

IP

E1/FE/SDH0

Link Layer

Stream Layer

Session

Connection

Security

Stream Layer

RLP

A16

L3 Sig.

UDP

IP

A11

L3 Sig.

UDP

Ethernet

IP

A10

GRE

IP

SDH0/FE

Data Packet

Ethernet

Data Packet

L3 Sig.

IPC

A9

A8

UoIP

GE

GE SDH0/FE

Ethernet

Ethernet

Link Layer

E1/FE/SDH0

Abis Sig.

L3 Sig.

TCP

IP

E1/FE

Abis Traffic

User TrafficFrame

E1/FE

UDP

IP

Link Layer

Link Layer






IP plan of Abis interface (ATM)

80.0.0.255/NetMask 255.0.0.0

129.11.95.25480.170.19.64

BCIM

BCKM

SCUO

SPUO

AEUB/AOUB

BAM

OMU

O&M Link

Signaling Link

ATM Link

80.146.16.192

80.144.16.64

129.8.192.880.126.130.116

About BTS OM link:BSCside 80.0.0.255-----129.8.192.8 BTS sideADD BTSOMLNK, BSC will auto assign BTS OM IP on BTS side, you may use LST BTSLNK to query it. When ADD BTS, we need input this IP, About BTS Signaling link:BSCside 80.144.16.64-----80.126.130.116 BTS sideADD BRD(SPUO subsystem), BSC will auto assign SPUO IP, this is the BTS signaling IP on BSC side, you may use LST SUBSYSTEM to query it. ADD BTSSIGLNK, BSC will auto assign BTS SIG IP on BTS side, you may use LST BTSLNK to query it.When ADD CBTSTERSIGLNK, we need input these “bscip” and “btsip”.About BTS Traffic link:QC51BCIM supports ATMEXCLUSIVE only, each QC51BCIM must configure a traffic link;

QC52BCIM supports ATMSHARED and ATMEXCLUSIVE traffic link, we may configure a traffic link for multi CCPM ; QC54BCIM supports ATMSHARED, ATMEXCLUSIVE and IPSHARED traffic link.


IP plan of Abis interface (PPP/MLPPP or FE Link)

80.126.130.116

80.0.0.255/NetMask 255.0.0.0

129.11.95.254 80.170.19.64

BCIM

BCKM

SCUO

SPUO

/PEUB/POUB/FG1B/FG2B

BAM

OMU

O&M Link

Signaling Link

PPP/MLPPP or FE Link

80.146.16.192

80.144.16.64

172.126.0.1172.126.0.2

Board IP

PPP link IP or FE port IP

129.8.192.8

168.126.0.2168.126.0.1

1. Compared with ATM link, 4 more IP added, they are BSC Abis interface board IP, BCIM IP, PPP/MLPPP link local IP & peer IP.

2. BSC side:ADD BRD(PEUB/POUB/FG1B/FG2B), we need configure BSC Abis interface board IP manually. ADD PPPLNK/ADD MLPPP link, we need configure local IP & peer IP manually; ADD ETHLNK, we need configure BSC Abis interface board ethernet port IP manually. ADD BTSOMLNK, ADD BTSSIGLNK, we need input “BCIM IP” and PPP/MLPPP link number (or Ethernet port of Abis interface board on BSC side)

3. BTS side:ADD CBTSTERSIGLNK, we need input “PEER IP”, this is BSC Abis interface IP 80.x.x.x.For FE link, currently we SHOULD configure below parameters on BTS locally (through telnet).SET CBTSBCIMIP: BTSID=2, BRDID=0, BRDIP=“172.126.0.2”ADD CBTSFEPORT: BTSID=2, BRDID=0, PORTID=0, PORTIP=“168.126.0.2”, ADD CBTSIPROUTE: BTSID=2, BRDID=0, DESTIP=“172.126.0.1", ROUTETP=FE, GWIP=“168.126.0.1”;Here, DestIP is Abis interface board IP 172126.0.1 we configured when we add the Abis interface board, GWIP is BCIM FE port IP.SET CBTSOAMIP: BTSID=2, OAMIP=“129.8.192.8", BAMIP=“80.0.0.255", GATEWAYIP="129.11.95.254", PEERIP="168.6.0.1";Here, the gatewayip is no meaning actually, it can be any IP in the same segment with BTS OMIP, PEERIP is Abis interface IP 172126.0.1 we configured when we add the Abis interface board.4. ADD BTS command is same with ATM5. ADD CBTSTERSIGLNK, we need input BSC Abis interface board IP6. USE ADD CBTSIPTERTRFLNK to configure terrestrial traffic link ( instead of ADD CBTSTERSIGLNK in ATM),


O&M IP between BSC6680 and BTS

IP Address Description

IP address of the Abis interface board

80.a.b.c & 129.j.k.254The values a, b, and c are determined by the type, subrack number, and slot number of the interface board, they are automatically generated by the system.

IP address used for BTS O&M

129.m.n.lThe variant m is related to the subrack number and the slot number of the interface board of the BTS. The variant n is related to the number of the BTS and the slot number of the interface board of the BTS. The variant l is related to the number of the BTS. The variants m, n, and l are automatically generated by the system.


Signaling IP between BSC6680 and BTS

80.126.f.l

80.126.0.0

BTS

TCP/IP

BTS

BTS

BTS

80.126.f.l

80.126.f.l

80.126.f.lBSC6680

SPUO

80.144.a.b

IP Address Description

IP address of the SPUO subsystem

80.144.a.bThe subnet mask is 255.0.0.0. The variant a is related to the number of the subrack where the SPUO subsystem is located. The variant b is related to the number of the slot where the SPUO subsystem is located.

IP address of the BTS for signaling transmission

80.126/127.f.l ,The subnet mask is 255.0.0.0. The variant f is equal to the highest five bits of the BTS number. The variant l is equal to the lowest eight bits of the BTS number. The signaling IP address of the BTS that is configured on the second SPUO subsystems is 80.127.f.l.


IP plan of A1pA2p interface (PPP/MLPPP Link)

FG1Aa/FG2Aa

PPP:9.9.9.9 PPP:9.9.9.8

UMGBSC

FE:7.7.7.8

ROUTER

FE:7.7.7.7

The BSC is connected to the router through E1 and the router is connected to the UMG through the FE port

Destination IP Gateway Priority

7.7.7.7 The corresponding PPP/MLPPP None

10.10.10.10 The corresponding PPP/MLPPP None

ON BSC, we need configure route to UMG and MSCe:

10.10.10.10MSCe


IP plan of A1pA2p interface (FE/GE Link, BSC connect to UMG directly)

BSCActive FG1Aa

MGW ActiveBoard

No IP are configured for Standby interface board FE/GE ports, just set the ports to UP state.

BSCStandby FG1Aa

MGW Standby

Board

Remarks:

Different colors meanDifferent network segment.the Subnet Maskcan be 255.255.255.252FG1Aa can use 1 GE port or4 FE ports.

If N pair FG1Aa boards are configured in BSC, N*4 “/30” network segment will be required.

CSoft3000ActiveBoard

CSoft3000Standby Board


IP plan of A1pA2p interface (FE/GE Link) (BSC load sharing, UMG active/standby, they connected via lanswitch)

8.8.8.x/28Active GE interface

Standby GE interface

Enable VRPP between two LSWs and the virtual IP address 7.7.7.8 of the VRRP serves as the gateway of the UMG.

LSW1

BSC

UMG:7.7.7.7172.2.1.x/28

172.3.1.x/28

172.4.1.x/28

172.1.2.x/28

172.2.2.x/28

172.3.2.x/28

8.8.8.x/28

VLAN 1:8.8.8.x/28

VLAN 2:172.2.1.x/28

VLAN 3:172.3.1.x/28

VLAN 4:172.4.1.x/28

VLAN 8:172.3.2.x/28

VLAN 5:8.8.8.x/28

VLAN 6:172.3.2.x/28

VLAN 7:172.4.2.x/28

FG1Aa

VLAN200: 7.7.7.4

VLAN100: 7.7.7.3

Active FE interface

Standby FE interface

CSoft3000:8.8.8.8

LSW2

GE for UMG FE for signaling FE for traffic


IP plan of A10/A11/A12 interface (FE/GE Link) (BSC load sharing, PDSN active/standby, they connected via lanswitch)

8.8.8.x/28Active GE interface

Standby GE interface

Enable VRPP between two LSWs and the virtual IP address 7.7.7.8 of the VRRP serves as the gateway of the UMG.

LSW1

BSC

PDSN:7.7.7.7172.2.1.x/28

172.3.1.x/28

172.4.1.x/28

172.1.2.x/28

172.2.2.x/28

172.3.2.x/28

8.8.8.x/28

VLAN 1:8.8.8.x/28

VLAN 2:172.2.1.x/28

VLAN 3:172.3.1.x/28

VLAN 4:172.4.1.x/28

VLAN 8:172.3.2.x/28

VLAN 5:8.8.8.x/28

VLAN 6:172.3.2.x/28

VLAN 7:172.4.2.x/28

FG1Xa

VLAN200: 7.7.7.4

VLAN100: 7.7.7.3

Active FE interface

Standby FE interface

ANAAA:8.8.8.8

LSW2

GE for PDSN FE for ANAAA FE for PDSN


IP plan of A3/A7/A13/A16 interface (FE/GE Link) (BSC interface board active/standby)

FE/GEFE/GE

IP Network

Router 1 Router 2VRRP

BSC3

FG1B

FG1B

StandbyActive

FG1B

FG1B

BSC2

BSC1

Active Standby

BSC IP: 192.168.0.1

BSC IP: 192.168.0.2

BSC IP: 192.168.0.3


IP Address for O & M

BAM 0

BTS (OMU

)

BTS (OMU

)

BTS (OMU

)

BAM 1

M2000 Server

80.0.0.255/8 80.0.0.252/8

WS WS WS

A1.A2.A3.A4/B A1.A2.A3.A4/B A1.A2.A3.A4/B A1.A2.A3.A4/B

A1.A2.A3.A4/B A1.A2.A3.A4/B

129.m.n.l/8

This subnet is involved in operation and maintenance system. All equipment in LAN must be in the same IP segment .The operator shall plan its IP address by itself. Private or public IP address can be used.

This subnet realizes the interconnection between the BAM/EWS and BSC, and between BSC boards. Every IP address is fixed. It occupies 80.0.0.0/8 network segment.

SCUOa

SCUOa

Abis boar

d

Other

board

Other

board

Abisboar

d

CMPS CSPS

BTS (OMU

)

BTS (OMU

)

BTS (OMU

)129.m.n.l/8

80.130.16.192/8 80.130.24.192/8

80.x.x.x/8 80.x.x.x/8

This subnet realizes BTS OM link. Every IP address is fixed. It occupies 129.0.0.0/8 network segment.


IP Address Requirement is BSC(1) Parameter Remarks

BSC IP

1. When A3A7 interface is ATM, neighbour IP must be in the same segment;2. After BScV200R003, the BSC IP is not necessary in the same segment with PCF IP.

PCF IP

1. PCF IP is a logical IP. More than one PCF can be configured in one BSC.2. After BScV200R003, the BSC IP is not necessary in the same segment with PCF IP.3. PCF IP and PCF interface board port IP cannot be in the same segment

Logic IP (board IP) of FG1B/FG2BWhen Abis interface is IP over FE, Logical IP of Abis interface Board must use public IP.

Logic IP (board IP) of BCIM (IP over FE) 　FE/GE A interface board (FG1A/FG2A) Ethernet port IP 1. Different Ethernet port IP on one board must be in different

network segment, It's better that all ethernet ports on all boards are in different segment.2. Min. required network segment No.=Ethernet ports used on each board, Max. required network segment No. =All ethernet ports used on all board

FE/GE A10/A11 interface board (FG1B/FG2B/FG1X/FG2X/GOUX) Ethernet port IP

FE/GE A3/A7 interface board (FG1B/FG2B) Ethernet port IP

FE/GE Abis interface board (FG1B/FG2B) Ethernet port IP

FE port IP of BCIM(IP over FE) 　

PPP/MLPPP link IP for PEUABecause there is no logical IP of A interface board after BSCV200R002, this PPP local end IP must be configured in MSCe, so it is visible outside BSC and need be planned.


IP Address Requirement is CBSS(2)

Parameter RemarksO&M IP 　Virtual external IP of BAM/EWS Communicate with M2000 and LMT

LMT n

M2000 server IP

M2000 Dial Access Server

M2000 client n

BTS OM IPOccupy 129.x.x.x segment. System distribute automatically 。 This segment can not be the same as other inter network of BSC 。

BTS signaling IPOccupy 80.x.x.x segment 。 System distribute automatically 。 This segment can not be the same as other inter network of BSC 。

Logic IP (board IP) of Abis interface board PEUB/POUB(IP over E1)

When Abis adopts IP over E1, logical IP of PEUB/POUB is visible in BSC and BTS only.

Logic IP (board IP) of BCIM board (IP over E1)When Abis adopts IP over E1, logical IP of BCIM is visible in BSC and BTS only.

PPP/MLPPP link IP of Abis interface and A3/A7 interface

1. Local IP and peer IP of PPP/MLPPP link can be in different segment;2. Local IP and peer IP of different PPP/MLPPP link must be different.3. When Abis/A3A7 adopts IP over E1, PPP/ML PPP link is visible in BSC and BTS only.

Virtual internal IP of BAM/EWS 　

Remarks: Yellow field means must negotiated with operator, green field means may use private IP

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Date post:	07-Apr-2015
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03-Ore006201 Ip Planning in Cbss System Issue2.0(Bsc6680)-20070724

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