08_RN28198EN20GLA0_Interrogation of BSC IP Settings

8/10/2019 08_RN28198EN20GLA0_Interrogation of BSC IP Settings

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Interrogation of BSC IP settings

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Soc Classification level

RN28198EN20GLA01 N okia Siemens Net works

Interrogation of BSC IP SettingsRG20 (BSS)


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Objectives

After completing the module, the student will be able to:

Describe IP Protocol Basics: address, netmask, private network, routing Describe the use of IP in BSC (physical interfaces and logical interfaces)

Apply MML command to interrogate IP setting for O&M


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ISO OSI model

ApplicationApplication

PresentationPresentation

SessionSession

TransportTransport

NetworkNetwork

Data LinkData Link

PhysicalPhysical

77

66

55

44

33

22

11

Logical combination of sub-

functions within one layer

Logical combination of sub-

functions within one layer

Defined interfaces between

layers:

offer services

Defined interfaces between

layers:

offer services

Implementation of a service is

not predefined

Implementation of a service is

not predefined

Seven layers for the

description of communication

processes

Seven layers for the

description of communication

processes

ISO International Standards Organization

OSI Open System Interconnection


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Layer communication

NetworkHeader

SegmentHeader

FrameTrailer

Data

SegmentHeader

Data

Data

FrameHeader

NetworkHeader

SegmentHeader

Data

0111111010101100010101101010110001

E-mail

Data

Segment

Packet

Frame(Hardware-dependent)

Bits


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OSI layer functions Physical Layer

Determines physical topology Mechanical/electrical specification of the transmission medium Determines line coding Determines other bit presentation rules (e.g. voltage level, timing rules)

Data Link Layer Organization of individual bits in frames, adding information for error detection Setting up and releasing reliable connections Media Access control for the sharing of a transmission medium Addressing systems using their MAC address (hardware-related address) Optionally error handling (e.g. collision handling in Ethernet) Optionally flow control

Network Layer Path selection based on network addresses (e.g. IP addresses) Segmentation and reassembly (block formation) Error detection and possibly correction Possibly flow control at network level

Transport Layer Addressing applications using the port address Setting up a connection between applications on different end systems (optional) A reliable connection is possible Reaction to errors is possible, e.g. by repeating transmission


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IP address and Netmask

IPv4 : the IP address is a 32-bit numerical label, represented as 4 bytes separatedby dots. The decimal system is used to display the address in a human-readable

notation:

An IP Address is divided in two parts: subnetwork and host address. The netmask

index defines which part of the IP address refers to subnetwork address and to hostaddress:

The IP address is followed by a slash and the number (in decimal) of bits used for thenetwork part. In the example above, /24 after the IP address means that the subnet ismade of 24 bits, while the host part is 8 bits long.

192.168.50.5/24

11000000.10100010.0011010.00000101Subnetwork

address

Host

Address

Netmask 11111111.11111111.1111111.00000000

255.255.255.0

(how many hosts user need to allocate and address)

Use of gateway will be described later


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IP Address types

Private Addresses (for internal use, they cannot be used in the Internet)

10.0.0.0 to 10.255.255.255

172.16.0.0 to 172.31.255.255 192.168.0.0 to 192.168.255.255

Loopback address is mainly used for test purposes this address cannotbe assigned in the network

127.0.0.1

Multicast addresses (for a group of hosts such as for media streaming):

224.0.0.0 to 247.255.255.255

Broadcast address (to reach every host in the subnet):

255.255.255.255

Reserved addresses:

248.0.0.0 to 255.255.255.254All other addresses are public and can be used and routed in the Internet.


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Routing

Routers are network devices that connect subnets on itsdifferent interfaces.

Routing is done using a routing protocol like OSPF, RIP or byconfiguring a static route (default gateway)

In the example below, for host 1 the default gateway is theinterface of the router with IP address 172.16.25.1

Host 4

Host 3

Host 2

Host 1

10.66.82.31

Subnet 1

Subnet 2

Subnet 3

10.66.82.1

192.168.50.5

192.168.50.6

172.16.25.1

172.16.25.4

In order to send packets from host1 to host4, the source sends the packets to thegateway that in this case is the default gateway, that is the router at the address172.16.25.1


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Transport

Host 2

Host 1

Once the route from source to destination is granted by the routers, software in each

host can create virtual connections to enable different kind of information exchange.

Virtual connections are identified by Transport Protocol and Port Number

TCP (Transport Control Protocol): Enable reliable information exchange (retransmission)

UDP (Unit Data Protocol): Enable real time exchange (no delay)

SCTP (Signaling Connection Transport Protocol): Enable reliable exchange of SS7 signaling

on IP link.

Port number under 1024 are already assigned for different protocol going upper TCP and

UDP.


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RN28198EN20GLA01 0 N okia Si emen s Networks

IP connectivity in BSC

The LAN Units (LANUs) provide IP connectivity to CPUs and PCUs in theBSC.

Each LANU contains three LAN Switching Units (SWUs).

The SWUs are ESBxx switches backplane connected to CPULAN (firstSWU of each LANU) and PCULAN (second and third SWUs of each LANU).


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BSC IP Interface Types

BSC units can manage different types of IP interfaces

LOOPBACK: Interface loopback is used for sending messages from theunit to itself to test it. This kind of interface is used in troubleshooting.

EL0, EL1: Redundant CPU IP interfaces.

IFETH0, IFETH1: Redundant PCU IP interfaces.

The interfaces can be configured with physical or logicaladdresses:

Physical Address: address is assigned to a specified computer unitpermanently.

Logical Address: address belongs to the specified interface of thespecified functional unit, that means the logical IP address follows the

active unit. The logical IP address can be given to 2N and N+1 units.


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ZQRI Output

ADDR ADM MTU PRIO-UNIT NAME IP ADDRESS TYPE NML ASSIGNED STATE RISED

------------------ -------- --------------- ---- --- -------- ----- ----- -----

OMU EL0 10.2.99.82 L 24 YES UP 1500 NO

EL1 10.2.99.82 L 24 NO UP 1500 NO

MCMU-0 EL0 10.1.1.1 L I 24 YES UP 1500 NO

EL1 10.1.1.1 L I 24 NO UP 1500 NO

EMB0 10.1.2.1 L I 27 YES UP 1500 NO

EMB1 10.1.3.1 L I 27 YES UP 1500 NO

MCMU-1 EL0 10.1.1.1 L I 24 NO UP 1500 NO

EL1 10.1.1.1 L I 24 NO UP 1500 NO

EMB0 10.1.2.1 L I 27 NO UP 1500 NO

EMB1 10.1.3.1 L I 27 NO UP 1500 NO

BCSU-0 -PCU2D- 3 IFETH0 10.2.77.40 L 24 YES UP 1500 NO

-PCU2D- 3 IFETH1 UP 1500 NO

BCSU-1 EL0 10.6.6.6 L 24 YES UP 1500 NO-PCU2D- 3 IFETH0 10.2.77.41 L 24 YES UP 1500 NO

Netmask

length


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ZQRS Output

QRS:OMU:;

BSC3i BSC31-LAB 2007-01-25 13:00:39

UNIT: OMU

Active Internet connections (including servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 2 10.2.99.82.telnet 172.21.222.11.3891 ESTABLISHED

tcp 0 0 *.www *.* LISTEN

tcp 0 0 *.11111 *.* LISTEN

tcp 0 0 *.ftp *.* LISTEN

tcp 0 0 *.telnet *.* LISTEN

udp 0 0 127.0.0.1.524 *.*

Active Internet6 connections (including servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp6 0 0 *.80 *.* LISTEN

tcp6 0 0 *.11111 *.* LISTEN

tcp6 0 0 *.21 *.* LISTEN

tcp6 0 0 *.23 *.* LISTEN

COMMAND EXECUTED


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ZQRX OutputQRX:OMU::IP=10.2.77.220:PING:;

BSC3i BSC31-LAB 2007-01-25 12:48:35

PING, SENDING UNIT: OMU

PING 10.2.77.220 (10.2.77.220): 56 data bytes64 bytes from 10.2.77.220: icmp_seq=0 ttl=254 time=9.282 ms

----10.2.77.220 PING Statistics----

1 packets transmitted, 1 packets received, 0% packet loss

round-trip min/avg/max = 9.282/9.282/9.282 ms

COMMAND EXECUTED

< QRX:OMU::IP=10.2.77.220:TRACE;

LOADING PROGRAM VERSION 12.12-0

BSC3i BSC31-LAB 2007-01-25 12:49:39

TRACEROUTE, SENDING UNIT: OMU

traceroute to 10.2.77.220 (10.2.77.220), 15 hops max, 38 byte packets

1 10.2.99.2 1.056 ms

2 10.2.77.220 0.781 ms

COMMAND EXECUTED

To test host reachability and route from source to destination


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ZQKB Output

QKB:;

BSC3i BSC31-LAB 2007-01-25 12:51:24

INTERROGATED STATIC ROUTES

ROUTE

UNIT DESTINATION GATEWAY ADDRESS TYPE NBR

------------------- ------------------ ------------------ ----- ----

BCSU-1 -PCU2D-3 DEFAULT ROUTE 10.2.77.2 LOG 2

OMU DEFAULT ROUTE 10.2.99.2 LOG 1

COMMAND EXECUTED


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ZIAI OutputIAI:USERID=ALL;

EXECUTION STARTED

BSC3i BSC31-LAB 2007-01-25 12:58:40

USER ID: SYSTEMPROFILE NAME: PROFILE

COMMAND CLASS AUTHORITIES:

A=250 B=250 C=250 D=250 E=250 F=250 G=250 H=250 I=250 J=250

K=250 L=250 M=250 N=250 O=250 P=250 Q=250 R=250 S=250 T=250

U=250 V=250 W=250 X=250 Y=250

PARALLEL PASSWORD EXISTENCE: YES

PASSWORD VALIDITY TIME LEFT: PASSWORD NEVER EXPIRES

MML COMMAND LOG ACCESSIBILITY: LIMITED

UNIQUE PROFILE: NO

MML SESSION IDLE TIME LIMIT: 15 MIN(S)

FTP ACCESSIBILITY: WRITE

NETWORK USE ALLOWED: NO

COMMAND EXECUTED

FTP setting for this profile


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Exercise: BSC interrogation

SWU

OMU

MCMU

SWU

PCU

BCSU

MCMU

BCSU

PCU

Exercise: BSC Interrogation, duration ~ 15min

Required equipment: one working VDU terminal for each workgroup.

Complete the picture above according to your classroom BSC!

Write down the used MML commands!

Interrogate the IP address of the OMU:

____________________________________________________________________

Is there any interface configured with logical IP address?

____________________________________________________________________

Whats the default gateway of the OMU?

____________________________________________________________________

Run ping and traceroute commands from OMU unit to IP address

____________________________________________________________________

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Documents

08_RN28198EN20GLA0_Interrogation of BSC IP Settings