ALC+2 Training Slide

ALCplus2 1

ALCplus2

ACM radio link

ALCplus2 2

Training items

1. ALCplus2

2. SCT or WEBLCT console

3. WEB LCT commands

4. Link configuration

ALCplus2 3

IDU

ALCplus2 (single board)

ALplus2/ALCplus2 4

ALCplus2 HW configurations

ALplus2/ALCplus2 5

ODU

AL plus and ALC plus Copyright Siae Microelettronica S.p.a.8

ODUAS 03 edition

ASN

Unprotected ODU

1+1 ODU

ALCplus2 6

ALCplus2 Connectors

16 E1 75/120

STM1 (1+0/1+1)

LAN 2, 4

LAN 1, 3

RJ45 management LAN 3, 4

(optical)

2 E1 75/120

Trib A and B

Nodal bus

ODU cable

-48Vdc (in parallel)

Power supply Fuse

USB

Alarm LEDs:URG, NURG, SW, TEST, power ON

1 - 8 9 - 16

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Connection to equipment

• LAN – using an internet browser with the MNGT port address

• USB/RS232 – using a serial connection using the WebLCT Console (on SIAE site: http://siaemic.com and, after the login, Download area, Software, WEB LCT). The connection address is assigned by

the equipment itself) with LCT port or RS232 port.

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SCT

ALCplus2 9

WEBLCT console

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Management ports 1/2

PC address assigned by IDU

Traffic ethernet ports can be used for management (in a separated VLAN)

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Management ports 2/2

EOC can arrive to IDU also through a Trib A or Trib B using a timeslot (…slow)

In case of both equipments (loc. and rem.) in the same LAN

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WEB LCT

SCT: Equipment menu

WEB LCT main menu is similar to SCT Equipment menu.

This software manages a single terminal.

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Remote element list

In order to have the whole link in one page only, local equipment is declared “managed by SCT”, remote one is declared “remote link”. Opposite configuration on remote side.

172.18.81.20 WEBLCT

172.18.81.22 WEBLCT

172.18.81.20 172.18.81.22

Local

Local

ALCplus2 14

ALCplus2 status display

local alarms

configuration

activity

name and hardware

Rx active branch

Tx and Rx ACM

profiles

TDM capacity

ethernet capacity

RF channel and

frequencies Tx and Rx power

Tx active branch

connection

IDU C°

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WEB LCT: equipment configuration

Configuration

ACM setting

Alarms thresholds, Tx and Rx switches

RF channel

Tributaries

Commands to configure a single equipment

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ALCplus2 IDU Configurator

1..81..8

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ALCplus2 Node connections

IDU 1 NB1 NB2

IDU 2 NB1 NB2

IDU 3 NB1 NB2

IDU 8 NB1 NB2

Max 8

LAN 1 LAN2

LAN 1 LAN2

LAN 1 LAN2

LAN 1 LAN2

. . . . . . . . .

From LAN 1 of IDU8 From NB1 of IDU8

To LAN 2 of IDU1 To NB2 of IDU1

Node Traffic transport:

TDM (E1) Nbus cable

LAN LAN cable

Max 8

LAN1 and LAN2 are used for cabling

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ALCplus2 node manager (SCT only)Example: 4 idu node

IDUs

IDUs connected through NBus

Commands

IDUs connected through LAN

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Nodal matrix

It’s a logical matrix relevant a logical IDU made up by the

physical IDUs

The cross connections between IDUx and the Nbus and Nbus and

IDUx+1 are automatically performed

ALCplus2 20Nodal matrix

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Nodal Ethernet switch configurator

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Nodal Port based VLAN

LAN1 and LAN2 are used for cabling

Connections are bidirectional automatically

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Node VLAN table

LAN1 and LAN2 are used for cabling

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VLAN table

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Ethernet ports of the IDUs of the node

LAN1 and LAN2 are used for cabling

IDU1 Interface

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Ethernet ports of the IDUs of the node

LAN1 and LAN2 are used for cabling

IDU1 VLAN

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Ethernet ports of the IDUs of the node

IDU1 priority

LAN1 and LAN2 are used for cabling

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Ethernet ports of the IDUs of the node

IDU1 LAN3 loop

LAN1 and LAN2 are used for cabling

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Ethernet ports of the IDUs of the node

IDU1 LAN3 STP

LAN1 and LAN2 are used for cabling

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STP mode of each IDU

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STM1 synchronisation - ALCplus2

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T2 / T3 1

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T2 / T3 2

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Synchro status

Source with the higher priority is present, with good quality and selected

All the sync. sources are degraded (out > 9.9 ppm) or missing. The IDU keeps the estimation of the last good

source used

Clock internally generated

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ACM setting

Downshift (from 256QAM to 4QAM): the modulation complexity and the radio capacity decrease.

Upshift (from 4QAM to 256QAM): the modulation complexity and the radio capacity increase.

For each modulation profile the number of extra TDM (and then the Ethernet bitrate) can be set.

Radio capacity:

Ethernet

Permanent TDM (high priority E1)

Extra TDM (low priority E1)

ACM enable: bandwidth and reference modulation (its mask can not be exceeded by any ACM profile)

ACM disable: bandwidth and used modulation

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Permanent and extra E1

Permanent: E1 present with all ACM profile

Extra

Capacity for E1 streams

In ALCplus2 the first 2

extra are A and B

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Extra TDM priority and order

A, B and after 1-16As you need

1-16 and after A, B Keep attention to set the same config. in order to mantain the traffic

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Adaptive Code Modulation 1 / 2

ACM profilesIn ALplus2/ALCplus2 radio family uses Adaptive Code and Modulation (ACM) in order to employ the correct modulation

profile depending on the Rx signal quality.

Available ACM profiles are the following:• ·       4QAM strong • ·       4QAM• ·       8 PSK• ·       16 QAM• ·       32 QAM• ·       64QAM• ·       128QAM• ·       256 QAM 

ACM switchingThe usage of the previous modulation profiles in a fixed channel bandwidth results in a variable capacity.

The criteria defining the necessity of an ACM switching, upshift or downshift, is the Rx S/N ratio.

• ·       Upshift – When there is an increase of received S/N, within the same Channel Spacing, the modulation complexity is increased in the direction from 4QAM strong to 256QAM increasing the spectral efficiency

• ·       Downshift – When there is a decrease of received S/N, within the same Channel Spacing, the modulation is reduced in the direction from 256QAM to 4QAM strong reducing the spectral efficiency,

These profiles operate in an RF channel with the following bandwidth:

• ·       7 MHz

• ·       14 MHz

• ·       28 MHz

• ·       56 MHz

ODU pass band filters

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Adaptive Code Modulation 2 / 2

ACM setting The ACM can vary modulation profiles between two extremes defined by the operator through software

configuration: Upper Modulation and Lower Modulation.• ·         Upper Modulation – When propagation into the given radio channel is in the better condition (high Rx • S/N), the radio link is working at the maximum throughput defined at Upper Modulation: the highest • modulation profile that ACM can employ• ·         Lower modulation – When propagation into the given radio channel is in the worst condition (low Rx • S/N), the radio link is working at the minimum throughput, defined at Lower Modulation: the lowest • modulation profile that ACM can employ

Tx Power mode Tx power mode can be set as Constant Peak or Constant Average (constant bolometer measurement).

• ·         Constant Peak – Tx power is at maximum at 4QAM and at 256QAM is reduced (typical 4.5 dB) so the • RF Tx amplifier can operate in better linear conditions

• ·         Constant Average – Tx power is the same at any modulation (…is the Upper Mod Tx power)

The Tx Power mode is set depending on the modulation license of the user

With Constant Average Tx power (Tx Power Constant Peak Mode = Disable), the Tx power at 4QAM and any other modulation is the same, so if Upper Modulation is 256QAM the output power at any modulation is the same of 256QAM which is 4.5 dB less than 4QAM.

The result is that enabling 256QAM gives a big advantage for traffic but less link budget margin at 4QAM.

ALCplus2 40

Power profiledBm

4QAM 8PSK 16QAM 32QAM 64QAM 128QAM 256QAM

+23

+28

+23.5

+24

+25

AVERAGE

PEAK

AS13 13GHz

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Average

In Average the Max Pout is the Max

Pout of the upper mod (23dBm @

256 QAM) and is the same at any

profile

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Peak and 4QAM as ref. mod.

With Peak mode enabled and 4 QAM as reference modulation, the max Pout is the max Pout of the radio at any modulation

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Peak request and 256QAM as ref. mod.With Peak mode enabled and 256 QAM as reference modulation, the max Pout is the Pout that makes the transmitted spectrum not going out from the mask relevant to reference modulation. If reference modulation is not the one that allows the max Pout of the radio, the Tx power mode comes back to Average.

Every time the reference modulation is higher than the lower modulation…the power mode becomes Average

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Max CapacityRF Bandwidth 7MHz 14MHz 28MHz 56MHz

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Radio Throughput (max E1 number)

Radio Throughput E1

48

17

34

5

10

20

40

7

14

30

60

10

20

40

80

12

25

50

80

15

30

60

80

17

35

70

80

20

40

80 80

0

10

20

30

40

50

60

70

80

90

7 MHz 14 MHz 28 MHz 56 MHz

Channel Bandwith

Ma

x E

1

4QAMst

4QAM

8PSK

16QAM

32QAM

64QAM

128QAM

256QAM

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General Preset

Rx Power Low alarm threshold

Local Tx switch in case both Remote Rx are alarmed: if remote Rx are alarmed for more than 10 sec in one minute, on local side Tx switch is performed and a Tx Fail alarm is active (to reset manually)

Link name

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Tributary traffic

• E1

- Permanent (high priority)

- Extra (low priority) In ALCplus2, trib A and B are here!

• STM-1

- STM-1 1+0

- STM-1 1+1

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E1 Tributaries

Enable/DisableRIGHT: E1 loop Radio side

Line side

Radio side

E1 name

alarms

Remember that exist• Permanent E1 (in all ACM

profiles)• Extra E1

LEFT: E1 loop Line side

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STM-1 Frame

• Bit rate = 155,52 Mbit/s , Frame Period = 125s (rec. G.707)

• Byte matrix: 9 lines and 270 columns row by row transmission (first byte is on the left of the top line )

• Every Byte is 64 Kbit/s channel

• STM-1 frame has a payload big enough for 1 E4 (140 Mbit/s) or 3 E3 (3 x 34 Mbit/s) or 63 E1 (63 x 2 Mbit/s)

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SOH

64Kbit/sRSOH

MSOH

First 9 bytes of all the lines represent SOH (Section Overhead), made up by RSOH and MSOH separated by 9 bytes of AUOH (AU pointer)

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RSOH Regenerator Section Overhead

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MSOH Multiplex Section Overhead

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Path overhead The Virtual Container is made up by path overhead and relevant container:

VC = POH + C

VC path overhead allows BER extimations, alarm and trouble information, multiplation indication.

Depending on C, 2 different POH exist:

VC-3 / VC-4 POH (with E3 and E4)

VC-11 / VC-12 POH (with A1 and E1)

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Compensation of variation of payload bit rate (with respect to nominal one) is obteined using stuffing.

In AUOH there are 6 bytes for justification signal and other 6 bytes (3 in SOH and other 3 adiacent in the same line of the payload) used for stuffing in order to adjust the position of VC first byte: Adjustment, if necessary, concerns 3 bytes more or less (154 s delay or anticipation) and the update is every 4 frames.

AUOH Administrative unit overhead

H1 H1 H1 H2 H2 H2 H3 H3 H3AUOH

RSOH

MSOH

Payload

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AU pointerFirst 6 bytes of AUOH contain: the pointer to position of VC first byte, the AU and the New Data Flag (it informs there are new data).

This is why AUOH is called POINTER

Byte H1 Byte H2

bit

n° AU POINTERNDF

Administrative Unit = AUOH + VC

AU4 = AUOH + VC4

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Start = First Byte of VC4RSOH

MSOH

AU4 POINTER

9 lines

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TU, Tributary Unit, is made up by VC and overhead TUOH placed in a fixed position relevant to POH of higher order VC (where TU is placed)

In TUOH there are

- A pointer towards VC frame start - Stuffing bytes

TU12 = 4 columns of 9 bytes 2,304 Mbit/s capacity

TUG is a group of same order TU:

- TUG21= 3 x TU12

- TUG3 = 7 x TUG21 (= 21 x TU12)

TU and TUG

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STM-1 & C4Stuffing and justification

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High order POH (POH of VC4)• J1 Path Trace: it is the label relevant to VC4

• B3 : BIP-8 parity result of the previous VC4, in MST mode points out C4 quality

• C2 : signalling label that points out if VC4 is equipped

• G1 : RDI, Remote Defect Indication, used to transmit to remote terminal an alarm condition

• F2/H4/F3/K3/N1 : not used

• C4: 140Mbit/s container with justification, stuffing and overhead bits

• VC4 : is made up by C4 and POH (path over head). POH is the first VC4 column (9 bytes)

• AU4 : is made up by VC4 and AU pointer.

• STM-1 : is made up by AU4 and SOH

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STM-1 & E1

SOH

AU pointer

POH

POH

E1

Justification

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E1

AU4 VC4

TUG3

TUG21

TU12VC12C12

x 3

x 7

x 3

STM-1

…in a STM-1 can be inserted 63 E1

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STM-1 Tributaries

Line alarmsEnable/Disable

STM-1 Loops

J0 Path trace

If J0 Received is different from Expected TIM alarm

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STM-1 B2 quality thresholds

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VC4

VC4 alarms

J1 Path trace

If J1 Received is different from Expected TIM alarm

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VC4 B3 quality thresholds

DegradedExcessive

VC4 label: tugStructure

*Tug = Trib. unit group

ALCplus2 66

VC-12

Tug-3 = 1

Tug-2 = 7

VC-12 = 3VC-12 1-7-3

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Ethernet traffic

• Packet frame• Level 2 and Level 3• VLAN• Priority (Qos and PoS)• LLF

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802.3 PACKET FORMAT

Pre.

Octet (byte)

SFD DSAP SSAP lenDati

(LLC-PDU)pad FCS

7 1 6 6 2da 0

a 1500da 0 a 46 4

From 64 to 1518 Byte without tag

Start Frame Delimiter

Preamble: it permits receiver synchronisation

Destination Service Access Point: MAC address of destination

Source Service Access Point: MAC address of source

Frame Check Sequence

Lenght

ALCplus2 69

• MAC switching: - destination local = discarded - destination known = sent to the port- destination unknown = sent to all the ports

• MAC Address learning

• MAC Address ageing

• Auto negotiation : - port speed- duplex-mode

• MDI/MDIX crossover

• Layer 2 Flow Control / Back Pressure

Switch at Layer 2

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Ethernet switch

QinQ

91 00: field to add (the same on local and on remote switch) in case of double tag. This field is add after the Destination Address in the overhead before the transmission and is deleted by the switch on the other side as soon as it has been received.

The Double tag is the one set as default tag of each external port

Packet output queue depending on packet 802.1p priority

Life of addresses in the MAC address table

Max packet size

Queue emptying policy- 8421 WRR: 8 packets with queue 3, then 4 with queue 2, then 2 with queue 1 and then 1 with queue 0.

- Strict priority: a packet can go out only if the upper priority queue is empty

- Strict 3: all queue 3 packets can go out, after them all the other using 8421WRR policy

- Strict 3 and 2: all queue 3 and 2 packets can go out strictly, after them all the other using 8421WRR policy

WRR= Wait Round Robin mode

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CONNECTION EXAMPLESNO

VLAN

AL_ETH AL_ETH

NOVLAN

PC1

NOVLAN

AL_ETH AL_ETH

NOVLAN

PC2

PC2PC1

PC3PC4

NOVLAN

NOVLAN

1

2

1

2

VLAN 4001

VLAN 4002

AL_ETH AL_ETH

PC4

VLAN 4003 VLAN 4003

AL_ETH AL_ETH

PC2PC1

VLAN 4005

VLAN 4005

PC1

NOVLAN

PC3NO

VLAN

1

2VLAN 4004

VLAN 4004

PC2

NOVLAN

VLAN 4005

An all pass Hub/Switch. Example1

PC1 with PC2 and PC3 with PC4. Example2

PC1 with PC2 and PC3 with PC4 with one external switch.

Example3

PC1 with PC2 with 2 external switches. Example4

PC3

PC5 PC6

PC4

LocalRemote

ALCplus2 72

TAG composition

1 VLAN TAG

ALCplus2 73

IEEE 802.1Q VLANsVLANs in two different ways:

- Based on Port, VLAN related to a local port attribute

- Based on IEEE 802.1Q TAG , VLAN is defined by the VID

(VLan Identifier) TAG content.

Switching between ports is based on VLAN membership defined

into Vlan configuration table.

Lan1 and Port1 are members of Vlan 303

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IEEE 802.1Q VLANs

• Break a LAN into a few smaller LANs and prevent data to flow between the sub-LANs

• Micro segment the LAN with scalability• Distribute traffic load • Better control of broadcast messages• VLAN: a field starting with other 4 Bytes starting

with the 2 Bytes 8100 – the packet size from 1518 Bytes arrives to 1522!

• VLAN with double TAG: a new field with other 4 Bytes starting with the 2 Bytes 9100 (see Ethernet Switch) – Remember to increase packet size!

ALCplus2 75

VLAN

Disable 802.1q: no Tag filter, “Port Based VLAN” will be followed

Fallback: if input is tagged, Virtual LAN table will be followed; if input tag is not present in the map or input is untagged, Port Based VLAN will be followed

Secure: if input is tagged, Virtual LAN table will be followed; if input tag is not present in the map or input is untagged, packets will be dropped

VLAN can be used to route packets through local and remote switch.

If VLAN are not used, “Port Based VLAN” assignment is used port by port

( Port Based VLAN is the old LAN per port )

4001

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VLAN mapPort 1 Port 2 Port 3 RadioPort

VLAN 720 doesn’t transit through port 1

VLAN 720 exits through port 1 untagged

VLAN 720 exits through port 1 with tag 720

VLAN 720 exits through port 1, with the same tag it has at input (unmodified)

ALCplus2 77

LAN settings: Interface

Cable

Port status

LAN SpeedFlow control

LLF status

LAN status

Port always active

ALCplus2 78

Settings for allpass Hub all ports to all ports, Example 1

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Settings for Lan to Lan separated traffic, Example 2

LAN per port

ALCplus2 80

Lan to Lan separated trafficExample 2 settings

ALCplus2 81

Priority

802.1p

IpTOS

Priority queues are set for all the ports

Priority management can be defined port by port:

in this example, despite general rules, LAN1 does not consider priority!

3 bits8 levels

6 bits64 levels

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Quality of Service

Better service to selected network traffic   Different service classes based on the identity of the customer

or the type of application Different service levels or to ensure service quality for time-

critical traffic such as voice or video. IEEE 802.1p QoS (Layer 2- Quality of Service): 3 bit of the

TAG. IP-V4 ToS (Layer 3- Type of Service): 6 bit of the TOS

(D.S.C.P.) QoS at level 2, at level 3 or at both

ALCplus2 83

Example of DSCP assignement in a UMTS station

NODE B RAB/RB

DSCP value

Queue Service class 802.1p

TBD 7

TBD 6

Synch 46 3 CBR 5

CS conversational 38 3 CBR 5

SRB 36 3 CBR 5

Common channels 34 3 CBR 5

NBAP Signalling 30 2 VBR real time 4

CS streaming 28 2 VBR real time 4

PS streaming 26 2 VBR real time 4

HS streaming 24 2 VBR real time 4

PS interactive 22 1 VBR not real time 3

PS background 20 1 VBR not real time 3

O&M 12 0 UBR 0

HSPA interactive (1,2) 12 0 UBR 0

HSPA interactive (3) 12 0 UBR 0

ALCplus2 84

LLF

Seconds before the LLF alarm

Port by port, ports to check relevant LLF can be set

ALCplus2 85

LAN PORTEthernet synch.

LAN cable

From 64Kb to Full Rate Auto Negotiation

In point to point connection

ALCplus2 86

Spanning tree

The Spanning Tree Protocol (STP) is a link layer protocol that ensures a loop-free topology for any bridged LAN.

MAC address & priority

Standard STP or rapid RSTP

STP params

edge/no edgeEach port must be assigned to

Bridge1 or Bridge2, every equipment crossed by a packet increases of 1 sec the max age

of the packet

ALCplus2 87

STP parameters• Hello time: from 2 to 10 sec, is the period between two BPDU

packets

• Forward Delay: the time for a status change (blocking learning, learningforwarding, forwardingblocking). In this way the time requested from blocking to forwarding is twice the Forward Delay (2 status changes)

• Max Age: If the incoming packet has a max age bigger than the one here defined, the packet is dropped

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RSTP parameters• Hello time: from 1 to 10 sec, is the period between two BPDU

packets

• Forward Delay: the time for a status change (blocking learning,

learningforwarding, forwardingblocking). In RSTP the time

requested from blocking to forwarding between two RSTP ports is the

hallo time (RAPID!) instead if the other port is not RSTP, again the

time is twice the Forward Delay (2 status changes)

• Max Age: If the incoming packet has a max age bigger than the one

here defined, the packet is dropped

ALCplus2 89

Bridge

00 00 00 1C 00 01

Equipment MAC address, set by SIAE, the same for management and traffic

Bridge priority: in case of same value, the smaller MAC addr. elects the router bridge

High Low

Bridge1 and 2 have same MAC addr. but can have different priority

ALCplus2 90

Crossconnection matrix

• Tributary – Radio crossconnetions• Tributary – Tributary crossconnections• Radio – Radio crossconnections

Remember that exist• Permanent E1 (in all ACM

profiles)• Extra E1 (…there are A and B)

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CrossConnect Matrix

Radio-Tributary

Tributary (Front panel connectors)

Radio capacity

Extra (Low priority)

Permanent (High priority)

CrossConnection is performed with a Drag ’n’ Drop of the E1 slot

ALCplus2 92

Radio-Radio crossconnection (passthrough)

ALCplus2 93

Trib.-Trib. crossconnection

ALCplus2 94

CrossConnection ListSelection column

Delect the selected crossconnection

ALCplus2 95

ATPC

ALCplus2 96

Link configuration

• 1+0• 1+1 hot stand by• 1+1 freq. diversity• 2+0 (ALplus2 only)

ALCplus2 97

1+1 hot stand-by= FHIGH

= FLOW

= Stand-by= Active

Both radios, working at the same frequency, are active in Rx but only one is active in Tx:

1 antenna – Branching losses are inserted in link budget

2 antennas –Link is in space diversity (and without branching losses) Best performance for d=150l (d=distance between antennas)

ODU ODU

ODU ODU

IDUIDU

1 1

2 2

ALCplus2 98

1+1 frequency diversityODU ODU

ODU ODU

IDUIDU

1 1

2 2

All radios, working at different frequencies, are active in Rx and Tx

1 antenna – Branching losses are inserted in link budget

2 antennas –Link is in space diversity (and without branching losses)

= F1HIGH

= F1LOW

= F2HIGH

= F2LOW

ALCplus2 99

SD management1. Delete SD files2. Create Boot SD3. Create Sw DWL SD4. Enable automatic restore (all)5. Enable automatic restore (Data only)6. Disable automatic restore7. Enable “Not running” Sw delete8. Disable “Not running” Sw delete9. Force automatic restore10. Copy Sw from SD11. Copy Data to BOOT SD12. Copy Sw to BOOT SD_________________________Notes: Sw= Equipment firmwaresData=Configuration Backup file

ALCplus2 100

Configure a new IDU with the SDAfter the substitution of an IDU, the SD memory of the old IDU can download configuration (“data”) and firmware (“SW”) on the new one automatically as soon as its controller points out a mismatch between the serial number (of the old IDU) stored in the SD and the serial number of the new IDU. After there will be a restart.

To prepare the SD memory to be a “back-up”, in the WEBLCT:

1.Insert an empty SD in the IDU and after run WEBLCT

2.Create a Boot SD …it takes about 10 minutes

3.Enable Automatic Restore (All)

Evenctual new setting after this point are included in the back-up

The status of the SD will show:

Automatic data restore from SD..……..Enabled

Automatic SW download from SD……Enabled

ALCplus2 101

Force automatic restore

Force the download from SD to IDU (Only for BootSD).

This command applies the backup manually.

Firmware 1.2.2 and WebLCT 1.2.2• ACL• Configuration mismatch alarm• Line trunk (ethernet traffic)• Radio trunk (ethernet traffic)• ELP• Ethernet OAM-FM• Ethernet Switch reset• Factory default

ALCplus2 102

ACL – Access Control ListA “white list” of IP addresses that can access

the LOCAL IDU

In order to avoid to be cut out from the IDU:

1) Configure the list

2) Enable the list

ALCplus2 103

An empty list, enabled, means: no one can enter!

In any case the access to IDU through LCT port (the USB one) is allowed.

Synchronization: Mismatch and Rescue

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Config. Mismatch and

“5 minutes Rescue” are enabled

Configuration Mismatch alarm

Every time one of the equip of the hop has a mismatch due to a new setting…the configuration is not applied until the remote is not configured in the same way.

Parameters checked through this function are:

1.Traffic division (TDM against Ethernet)

2.Extra TDM setting

3.ACM on/off

4.Reference modulation with ACM off

5.Extra TDM priority order

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Parameters not checked:Reference modulation with ACM onChannel spacingRF frequencyPeak/Average Tx powerLink ID

Rescue status

During the line-up, if the remote, already configured, is not visible both terminals enter in Rescue status: 4QAM and 0 TDM with Rescue alarm ON.

After 5 minutes if the remote remains unreachable, they turn back to use the traffic configuration of the line up.

ALCplus2 106

Line trunk (802.3 ad-LAG)Up to 4 Ethernet lines can be grouped to increase capacity (4 different groups are available) in the same IDU

Conditions:

1.Same speed

2.Full duplex

Division of Ethernet traffic:

XOR between destination MAC

and source MAC (hashing)

ALCplus2 107

LAN1 LAN2 LAN3 LAN4

Trunk x

Radio trunk (for Ethernet traffic only)

Up to 4 different streams can be grouped to increase capacity (1 group only is available). The IDUs must be in the same node.

Throughput:•Unicast < 1Gbit/s bidirectional

•Broadcast < 0.5Gbit/s bidirectional

ALCplus2 108

Division of Ethernet traffic:XOR between destination MACand source MAC (hashing)

ELPA level 2 protection of ethernet lines (2 or more lines in different groups) in the same IDU or in the same node:

the switch is performed when a LAN port LOS (on local side) is noticed.

When this LOS is over a second switch is not performed.

ELP equipment Prot 1 and 2

ELP nodal Nodal Prot 1, 2, 3 and 4

ALCplus2 109

OAM - FM

ALCplus2 110

…remember to set Fallback or Secure on used port

• FM Fault Management inside user VLAN– Continuity Check Protocol heartbeat with period 1s, 10s, 1m, 10m; no auto reply– Loopback Protocol LBM destination mep/mip replies, up to 5 consecutive– Link Trace Protocol LTM in a MA, reached devices answer with its own MAC address– Remote Defect Indicator a mep informs the other meps of the MA regarding a defect

• MD Maintenance Domain levels from 7 (higher) to 0 (lower)– Customer Domain both ends of Ethernet service: between end users levels 7, 6, 5 – Service Provider Domain whole network except end users levels 4, 3– Operator Domain a part of network levels 2, 1 and 0

• DL Domain Label, different for every domain

• MA Maintenance Association, MA correlates VLAN to MD (and its meps/mips)

• MEP Maintenance End Point– MEP down outside line side– MEP up inside (radio port and other local ports depending on the VLAN table)

• MIP Maintenance Intermediate Point

ALCplus2 111

OAM acronims

ALC+2 1 DM

1 MEP/MIP each VLAN , max 32 VLAN (Vid 1 and Vid 4095 are not available)

1 MA each VLAN (except Vid 1 and Vid 4095)

MEP and MIP1. Create VLAN (VLAN 1 and VLAN 4095 are available for traffic but not for OAM)

2. Set as filter on the VLAN ports Fallback or Secure

3. Create Domain (command OAM-FM Domain in WebLCT)

4. Bind MA (…MIP) or Bind MEP (command OAM-FM MA/MEP in WebLCT)

ALCplus2 112

Bind MAIn OAM-FM MA/MEP select the VLAN

where to create the MIP and select the command Bind MA. The name of the VLAN is suggested MA name.

A MIP is created inside the Ethernet switch.

ALCplus2 113

VLAN 2 is selected

Now VLAN 2 has a MA and a MIP inside the ALC+2

Bind MEP

ALCplus2 114

VLAN 11 is selected

• MEP ID is univocal in the VLAN• MA Name is the VLAN label• CCM Interval is the CCM period :1s, 10s, 1m, 10m

and LAN4 is the port where CCM messages exit through

Select port and direction

Outside the switch

Inside the switch

Now VLAN 11 has a MEP inside the ALC+2, the CCM start from this MEP and go out through LAN4 every 10 seconds

Used port must be NOT “trunked”

MEP usage

ALCplus2 115

CCM enabled. The MEP sents CCMs, every T, to its RMEPs to evalutate the status of the VLAN circuit. The CCM can be originated only by a MEP.T = 1s, 10s, 1m, 10m

MEP identity

RED: no CCM received from remote MEPs for more than 2.5T , or RMEP not present/crosschecked. Green: received from crosschecked RMEP

RMEP: table of Remote MEPs (RMEP) of this local MEP. A RMEP must be crosschecked to be used.Local MEP and its RMEP are in the same VLAN and must have the same CCM period T.A RMEP sends CCMs towards the local MEP and without LBM or LTM does not replies to local MEP.

MAC of remote equip.

MEP status:Start - RMEP must be crosscheckedConnected – RMEP is workingFailed – RMEP is not receiving

Test using MEP: LBM and LTM

ALCplus2 116

Set the MIP

select the RMEP

Number of messagesReplies

LBM – A unicast message towards a same domain MEP/MIP . In case of MIP destination the MAC of the equipment should be written (not in ALC+2)

LTMLTM – All the MEP/MIP met reply towards the sender… that

obtains a list of MIP/MEP crossed towards the RMEP destination.

ALCplus2 117

List

Destination

Sender

Ethernet switch reset

All the ethernet setting are deleted (ethernet traffic is cut). The system restarts.

ALCplus2 118

Factory default

ALCplus2 119

User: System Pswd: “****”

If “Apply” is selected all the settings are deleted substituted by factory default (addresses depends on ODU H or L)

ALCplus2 120

ODU POLE MOUNTING

ALCplus2 121

1+0 Integrated AntennaSTANDARD POLE MOUNTING KIT

ALCplus2 122

1+1 Integrated AntennaSTANDARD POLE MOUNTING KIT

ALCplus2 123

1+0 Not Integrated AntennaSTANDARD POLE MOUNTING KIT

ALCplus2 124

1+1 Not Integrated AntennaSTANDARD POLE MOUNTING KIT

ALCplus2 125

1+0 Integrated AntennaFAST-LOCK POLE MOUNTING KIT

ALCplus2 126

1+1 Integrated AntennaFAST-LOCK POLE MOUNTING KIT

ALCplus2 127

1+0 Not Integrated AntennaFAST-LOCK POLE MOUNTING KIT

ALCplus2 128

1+1 Not Integrated AntennaFAST-LOCK POLE MOUNTING KIT

IDU-ODU cable

Gain in Vdc (dBm in Rx)

Ground