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Soc Classification level RN2812CEN13GLN01 © Nokia Siemens Networks
Interrogating IP
S13
Soc Classification level RN2812CEN13GLN02 © Nokia Siemens Networks
Module 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)
• Interrogate the IP setting for O&M and for Gb over IP– ZQRI
– ZQRS
– ZQRX (ok and fail)
– ZQKB
– ZFXL
– ZFXI
– ZIAI (for FTP)
Soc Classification level RN2812CEN13GLN03 © Nokia Siemens Networks
ISO OSI model
application
host A
transmission medium
Communication
hardware/software
application
host B
Communication
hardware/software
OSI Stack
1 Physical Layer
2 Data Link Layer
3 Network Layer
4 Transport Layer
5 Session Layer
6 Presentation Layer
7 Application Layer
application
host A
transmission medium
Communication
hardware/software
Communication
hardware/software
application
host B
Communication
hardware/software
Communication
hardware/software
OSI Stack
1 Physical Layer
2 Data Link Layer
3 Network Layer
4 Transport Layer
5 Session Layer
6 Presentation Layer
7 Application Layer
Physical layer : Access to physical medium. E.g. PCM or UTP cable.
Data link layer: Error free exchange switching Performed at this layer based on MAC address. E.g. Ethernet 802.3
Network Layer: routing performed using routing protocols like ospf or static routes. Routing done for IP protocol packets that is used to address subnetworks and hosts. IP is a Network Layer
Transport Layer: distinguishing between different types of exchange between hosts ( telnet, ftp http) TCP, UDP, SCTP are Transport Layers
Soc Classification level RN2812CEN13GLN04 © Nokia Siemens Networks
IP address and subnetmask
IPV4 : IP address is build of 4 parts divided by “.” everyone of them is 1 byte. The decimal system is used to designate the address
IP Address is divided into two parts: subnetwork and host address.
This division can be in any part of the address depending of the user needs.
/24 in the address means that the subnet is made of 24 bits, while the host part is 8 bits
192.168.50.5/24
11000000.10100010.0011010.00000101
Subnetwork
address
Host
AddressNet
mask
11111111.11111111.1111111.00000000
255.255.255.0
Soc Classification level RN2812CEN13GLN05 © Nokia Siemens Networks
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
Local address is :
• 127.0.0.1
• It is the local IP address of the computer itself - this address cannot be assigned in the network
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 255.255.255.254
All other addresses are public and can be used and routed in the Internet. They are assigned by regulators.
Soc Classification level RN2812CEN13GLN06 © Nokia Siemens Networks
Routing
Routers are network devices that connect subnets on its different interfaces.
Routing is done using a routing protocol like OSPF, RIP or by configuring a static route (default gateway)
For host1 the default gateway is the interface of the router with IP address 172.16.25.1
Routers are exchanging information about the subnetworks connected to each one of them.
Host4
Host3
Host2
Host1192.168.5
0.5
192.168.50.6
172.16.25.4
10.66.82.31
172.16.25.1
10.66.82.1
Subnet 1
Subnet 2
Subnet 3
Soc Classification level RN2812CEN13GLN07 © Nokia Siemens Networks
Transport
Host2
Host1
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.
Soc Classification level RN2812CEN13GLN08 © Nokia Siemens Networks
IP interfaces in BSC
2 Switching unit present in the BSC.
Three ethernet switches ESB are included
in every switching unit:
One ESB for connecting the CPU-s of the
functional units to different interfaces
like CBC,BBI and other interfaces.
two ESB for connecting the PCU
to the SGSN (GB over IP) and the DNS.
Soc Classification level RN2812CEN13GLN09 © Nokia Siemens Networks
BSC IP interface types
BSC units can manage different types of IP interfaces
LOOPBACK:
Interface loopback is used for sending messages from the unit to itself to test it. This kind of interface is used in troubleshooting.
Physical Address:
Given to the OMU this address is assigned to the unit permanently.
OMU has no redundancy.
Logical Address:
Given to redundant units, this address follow the active unit. When unit state is changed to spare the address will to the working unit.
Soc Classification level RN2812CEN13GLN010 © Nokia Siemens Networks
Address Allocation in BSC
Every unit is connected to
two switching units for
redundancy.
OMU has two physical
addresses EL0 and EL1.
MCMU and BCSU everyone
has two logical addresses
EL0 and EL1.
PCU has Two addresses
IFETH0 and IFETH1.
E S B
E S B
E S B
O
M
U
M
C
M
UE S B
E S B
E S B
BCSU
P
C
U
Soc Classification level RN2812CEN13GLN011 © Nokia Siemens Networks
GB over IP structure
PCU is connected to
the PAPU in SGSN.
IP addresses of PAPU
And PCU can be in
different subnetwork.
router is used to
enable the exchange
of in information between PCU and PAPU.
Port numbers should be higher then 1024. Lower ports are already assigned.
NSEI
UDP port 30001
PAPU BCSU PCU
IP 192.168.4.5
SGSN BSC
NSEI
UDP port 50001
IP 172.16.3.7
router
Default gateway= Router IP Adresse
Soc Classification level RN2812CEN13GLN012 © Nokia Siemens Networks
GB over IP interrogation In S11.5 Gb over IP interrogation is performed with the same command as frame relay (ZFWO)
In S13 there are three separate commands, one for frame relay and two for IP
ZFXI:
• Shows the structure of PSEIs, NSEIs, NSVLIs configured in the BSC
• Given one NSEI, shows details of the NSVLI such as the PAPU address and ports used
• PSEI (Packet Service Entity Id) is the identification of the GPRS core network
• NSEI (Network SEI)is the address or the identifier of the PCU
• NSVLI (Network Service Virtual Link Id) is the identifier of a virtual connection.
ZFXL:
• Shows the available PSEIs
• Given one PSEI shows PCUs, BTSs and DAPs using this PSE.
Soc Classification level RN2812CEN13GLN013 © Nokia Siemens Networks
ZQRI Output< ZQRI;
LOADING PROGRAM VERSION 12.12-0
BSC3i BSC31-LAB 2007-01-25 12:46:07
INTERROGATING NETWORK INTERFACE DATA
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
COMMAND EXECUTED
Netmask length
Soc Classification level RN2812CEN13GLN014 © Nokia Siemens Networks
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 Statetcp 0 2 10.2.99.82.telnet 172.21.222.11.3891 ESTABLISHEDtcp 0 0 *.www *.* LISTENtcp 0 0 *.11111 *.* LISTENtcp 0 0 *.ftp *.* LISTENtcp 0 0 *.telnet *.* LISTENudp 0 0 127.0.0.1.524 *.* Active Internet6 connections (including servers)Proto Recv-Q Send-Q Local Address Foreign Address Statetcp6 0 0 *.80 *.* LISTENtcp6 0 0 *.11111 *.* LISTENtcp6 0 0 *.21 *.* LISTENtcp6 0 0 *.23 *.* LISTEN
COMMAND EXECUTED
Soc Classification level RN2812CEN13GLN015 © Nokia Siemens Networks
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 lossround-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
Hosts that through them message
reach the destination
Soc Classification level RN2812CEN13GLN016 © Nokia Siemens Networks
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
Soc Classification level RN2812CEN13GLN017 © Nokia Siemens Networks
ZFXL OutputFXL:;BSC3i BSC31-LAB 2007-01-24 17:30:18PACKET SERVICE ENTITY DATAPSE-00
COMMAND EXECUTED< FXL:PSEI=0;LOADING PROGRAM VERSION 1.13-0BSC3i BSC31-LAB 2007-01-25 12:53:56PACKET SERVICE ENTITY DATA
PSE-00======
ATTACHED NSE(S) TO PSE:NSEI---------------------------------------------------------------------01755
ATTACHED PCU(S) TO PSE:PCU BCSU PCUID INDEX INDEX--- ----- -----00 00 03COMMAND EXECUTED
Soc Classification level RN2812CEN13GLN018 © Nokia Siemens Networks
ZFXI Output< FXI:NSVLI=5500;
LOADING PROGRAM VERSION 1.13-0
BSC3i BSC31-LAB 2007-01-25 12:56:54
NETWORK SERVICE VIRTUAL LINK PARAMETERS:
EQOS ENABLED
PSE-00 NSE-01755
================
LOCAL UDP PORT: 33000
NSE PFC MODE: ON
STATIC CONFIGURED NS-VL(S):
OP REMOTE REMOTE
ID NAME STATE RDW RSW IP ADDRESS UDP PORT
----- ---------- ----- --- --- --------------- --------
05500 GBIP WO-EX 010 005 10.2.77.220 50000
ID REMOTE HOST NAME
----- ----------------
COMMAND EXECUTED
Soc Classification level RN2812CEN13GLN019 © Nokia Siemens Networks
ZIAI OutputIAI:USERID=ALL;EXECUTION STARTEDBSC3i 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: YESPASSWORD VALIDITY TIME LEFT: PASSWORD NEVER EXPIRESMML 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
Soc Classification level RN2812CEN13GLN020 © Nokia Siemens Networks
QUESTIONS?