AC6605 does not automatically assign channels and adjust signal strength

Issue Description

Customer installed multiple AP’s at a site.  He noticed that channels are not being assigned automatically, and had to assign channels manually on 200+ AP’s.  Also the signal strength was not being adjusted dynamically causing some devices to drop connections because the devices were trying to connect to multiple AP’s due to high signal strength.

Alarm Information

none

Handling Process

we reported to R&D and they provided with new version of software.
customer was using V2R2, and we upgraded to V2R3 and issues were resolved.

Root Cause

we tried to turn off certain AP’s in the room, and connection was stable.  customer was having trouble with Apple devices particuarly.

Suggestions

previous version of software had issues with assigning channels and adjusting signal strength.
version V2R3 resolved the issue.

More technical support

Contact information:

Telephone:852-30623083

Email: Sales@thunder-link.com

Supports@thunder-link.com

Website: http://www.thunder-link.com

 

 

 

A network problem caused by default vlan case

Issue Description

The network is that three AccessPoint devices connect to switch in ports GE0/0/18, GE0/0/19 and GE1/0/19, and configure different VLANs, then connect these devices to firewall who will send through his own DHCP server IP address to APs. But when the customer connects a computer in any VLAN1 ports membership, the device receives an IP from DHCP server and this shouldn’t happen.

Network topology:
qq%e5%9b%be%e7%89%8720170214172936

Alarm Information

None

Handling Process

Check the customer’s switch configuration, I find that all the interfaces which customer used have been configured as hybrid type and allow the VLANs which he wants, as following:

interface GigabitEthernet0/0/20
port link-type hybrid
port hybrid tagged vlan 22 to 24 52 to 54
port hybrid untagged vlan 21

interface GigabitEthernet1/0/20
port link-type hybrid
port hybrid tagged vlan 22 to 24 52 to 54
port hybrid untagged vlan 21
As the above configuration, these interfaces still allow the VLAN 1, because vlan 1 is the default vlan for all of interfaces, if you want to the interface doesn’t allow VLAN 1, you should delete it from vlan 1. The commands like below:

interface GigabitEthernet0/0/20
port link-type hybrid
undo port hybrid vlan 1    //Need to add this command under interface
port hybrid tagged vlan 22 to 24 52 to 54
port hybrid untagged vlan 21

interface GigabitEthernet1/0/20
port link-type hybrid
undo port hybrid vlan 1
port hybrid tagged vlan 22 to 24 52 to 54
port hybrid untagged vlan 21

After do the above change, the problem is resolved.

Root Cause

According to the following problem information,Seems like there are some wrong configuration on the swicth devices.

Suggestions

For the switch network, please pay attention to the default VLAN 1. For all interfaces, because it is default VALN, and there is no command under the interface, sometimes, it is possible to forget it.

The most popular Huawei switch as below:

Huawei S5700 Switch

Huawei S2700 Switch

Huawei S6700 Switch

Contact information:

Telephone:852-30623083

Email: Sales@thunder-link.com/Suports@thunder-link.com

Website: http://www.thunder-link.com

 

What’s the Overview of the Working Modes ?

Overview of the Working Modes

This section describes the board working mode and port working mode. A specific service signal flow of a board is available when the board working mode and port working mode are set to specific values.

Board mode

As shown in Table 1, the TN11TOM boards support the cascading and non-cascading modes.

Table 1 Board mode of the TN11TOM board
Board mode Description
Cascading mode
  • A maximum of eight multi-rate (< 2.5 Gbit/s) client-side services can be input to the TN11TOM board through the SFP module on the client side.
  • The services are then multiplexed into different timeslots of one or two ODU0 services or one ODU1 service.
  • Each group of ClientLP ports, for example, 201(ClientLP1/ClientLP1)-1 to 201(ClientLP1/ClientLP1)-8 ports, can access a maximum of eight client-side services.
Non-cascading mode
  • A maximum of eight multi-rate (< 2.5 Gbit/s) client-side services can be input to the TN11TOM board through the SFP module on the client side.
  • The services are then multiplexed into different timeslots of one to eight ODU0 services or one to four ODU1 services.
  • Each group of ClientLP ports, for example, 201(ClientLP1/ClientLP1)-1 to 201(ClientLP1/ClientLP1)-4 ports, can access a maximum of four client-side services.

Port Working Mode

The TOA board supports five working modes listed in Table 2. You can set the port working modes on the NMS.

Table 2 Mappings between the working modes and the service mapping paths
Board Working Mode Configuration Scenario Port Working Mode Mapping Path
Cascading mode Scenario 1: ODU1 tributary mode (cascading) N/A OTU1/Anya->ODU1
Scenario 2: ODU1 tributary-line mode (cascading) N/A OTU1/Any->ODU1->OTU1
Non-cascading mode Scenario 3: ODU1 tributary mode (non-cascading) N/A OTU1/Any->ODU1
Scenario 4: ODU1 tributary-line mode (non-cascading) N/A Any->ODU1->OTU1
Scenario 5: ODU1 tributary-line mode (electrical regeneration board) N/A OTU1->ODU1->OTU1
a: “Any” in the table indicates the client-side service supported in the corresponding application scenario.

SDH Board Is Damaged Due to Misoperation on OTDR

MC-B14 SDH Board Is Damaged Due to Misoperation on OTDR

When the optical time domain reflectormeter (OTDR) is used to check the fibers, the optical ports on the SDH board are damaged because the routing connection is incorrect. Hence, you need to ensure that the test distance and the routing connection are correct when you use the OTDR for testing fibers.

Product

OptiX OSN 3500

Fault Type

SDH_Access_Unit

Symptom

Use the OTDR to test the fiber between NE A and NE B. The fiber length between NE A and NE B is 105 km. NE A and NE B are configured with the SSN1SL1602 boards (with the L-16.2Je port). The test distance of the OTDR is set to 100 km and the OTDR is connected to test the fiber between NE A and a place 5 km away from NE B. During the connection between the OTDR and the ODF, the OTDR is misconnected to NE B. The OTDR is started to test the fiber. The test result shows that the SSN1SL1602 board on NE B is damaged.

Cause Analysis

In the case of different distances, the output optical power of the OTDR has different values. The overload receive power of the L-16.2Je port is -9 dBm. The OTDR is misconnected to NE B, that is, the routing connection is incorrect. Hence, the power transmitted from the OTDR to the L-16.2Je port exceeds the overload receive power of the L-16.2Je port. As a result, the L-16.2Je port is damaged.

Procedure

  1. Replace the damaged board with a new board.

Reference Information

Note the following points when you use the OTDR to test fibers:

  • Clearly mark the labels of the optical ports, fiber jumpers, and ODF when you install the equipment. Otherwise, misoperations may occur during later maintenance.
  • Determine the required test distance and check the connection of the ODF when you use the OTDR.
  • Remove the fiber jumpers from the line board when you use the OTDR to test fibers.
  • In the case of long-distance optical ports, ensure that the routing connection is correct. The overload receive power of a long-distance optical port is low and thus may be damaged by the optical power that exceeds the overload receive power in the case of routing misconnection.

Testing the 1+1 Protection of the Cross-Connect Board and Clock Board for OptiX OSN 8800

1+1 protection is configured by using the cross-connect board and clock board. This section
describes how to test the 1+1 protection switching of the cross-connect board and clock
board, thus ensuring that the protection switching is normal.
Prerequisites
For the OptiX OSN 8800 T16, slots 9 and 10 must house the high cross-connection, system
control and clock processing board.
For the OptiX OSN 8800 T32, slots 9 and 10 must house the cross-connect board.
For the OptiX OSN 8800 T64, slots 9 and 43 (or slots 10 and 44) must house the cross-
connect board.
For the OptiX OSN 8800 T32, slots 42 and 44 must house the clock board.
For the OptiX OSN 8800 T64, slots 75 and 86 must house the clock board.
The NE commissioning data must be configured.
Tools, Equipment, and Materials
U2000
Procedure
Step 1 Double click the ONE icon on the Physical Map, and the NE Panel tab is displayed.
Step 2 Right-click the NE icon and choose NE Explorer.
Step 3 Choose Configuration > Board 1+1 Configuration. Click Query. The queried Active
Board should be the same as the Working Board.
NOTE
For the OptiX OSN 8800 T16, Working Board is the cross-connection, system control and clock processing board in slot 9, and Protection Board is the cross-connection, system control and clock processing board in slot 10. Active Board is the cross-connection, system control and clock processing board that is actually working.
For the OptiX OSN 8800 T32, Working Board is the cross-connect board in slot 9, and Protection Board is the cross-connect board in slot 10.Active Board is the cross-connect board that is actually working.
For the OptiX OSN 8800 T64, Working Board is the cross-connect board in slot 9 or 10, and Protection
Board is the cross-connect board in slot 43 or 44. Active Board is the cross-connect board that is actually working.
For the OptiX OSN 8800 T32, Working Board is the clock board in slot 42, and Protection Board is the clock board in slot 44. Active Board is the clock board that is actually working.
For OptiX OSN 8800 T64, Working Board is the clock board in slot 75, and Protection Board is the clock board in slot 86. Active Board is the clock board that is actually working.
Step 4 Select Cross-Connect Board 1+1 Protection or Clock 1+1 Protection, and then click
Working/Protection Switching. In the Microsoft Internet Explorer dialog box that is
displayed, click OK. In the Operation Result dialog box that is displayed, click Close.
OptiX OSN 8800/OSN 6800/3800
NOTE
When you select the cross-connect board or the clock board for switching, the cross-connect board and the
clock board perform switching at the same time.
Step 5 Repeat step 3 to perform the query. The queried Active Board should be the same as the Protection Board.
Step 6 Select Cross-Connect Board 1+1 Protection or Clock 1+1 Protection, and then click
Restore Working/Protection. In the Confirm dialog box that is displayed, click OK. In the
Operation Result dialog box that is displayed, click Close.
NOTE
When you select the cross-connect board or the clock board for switching, the cross-connect board and the clock board perform switching at the same time.
NOTE
The 1+1 protection switching on the cross-connect boards and clock boards is non-revertive. When Protection Board becomes Active Board, restore the cross-connect boards and clock boards to the original working/protection state by removing the protection board, or by clicking Restore Working/Protection on the U2000.
Step 7 Repeat step 3 to perform the query. The queried Active Board should be the same as
Working Board.
—-End

What the N66-22 Cabinet of MA5608T?

The N66-22 cabinet complies with the IEC standard. This topic provides the appearance, and specification of the N66-22 cabinet, and describes the configuration, cable holes, ESD jack, air filter, external cable connections, and ventilation of the cabinet.
Appearance
This topic provides the appearance of the N66-22 cabinet.
The N66-22 cabinet is an IEC 600 mm middle standing pillar cabinet of NC purple grey.
The N66-22 cabinet houses the MA5680T IEC cabinet and MA5683T chassis.

The N66-22 cabinet consists of the rack (main frame), a front door, a rear panel fixed by screws, and side panels on the left and right sides.
The door of the N66-22 cabinet is removable and the top of the cabinet has the grounding point. All N66E-22 cabinets have the same key for the front door.
Figure 1 Appearance of the N66-22 cabinet

1

Specification
This topic provides the dimensions, weight and power parameters of the N66-22 cabinet.
Figure 2 and Table 1 list the dimensions and weight of the N66-22 cabinet.

Figure 2 Dimensions of the N66-22 cabinet

2

Table 1 Dimensions and weight of the N66-22 cabinet

3

Table 2 lists the power parameters of the N66-22 cabinet.
Table 2 Power parameters of the N66-22 cabinet

4

Configuration
The N66-22 cabinet adopts the DC power. This topic describes the service subrack configuration, maximum number of subscribers and maximum power consumption of the N66-22 cabinet.
Figure 3 shows the configuration of the N66-22 cabinet installed with two service shelves.

Figure 3 Configuration of the N66-22 cabinet installed with two service shelves

5

NOTE
In Figure 3, the filled holes are for floating nuts to fasten subracks.

Cable Hole

The power cables and subscriber cables are led into the N66-22 cabinet from the top and the bottom of the cabinet. This topic describes the positions of cable holes at the top and the bottom of the N66-22 cabinet.
The cables of the N66-22 cabinet can be routed in the overhead cabling mode or the underfloor cabling mode.

  • In the overhead cabling mode, external cables are led into the cabinet through the top of the cabinet. Figure 1-51 shows the positions of cable holes at the top of the cabinet.
  • In the underfloor cabling mode, external cables are led into the cabinet through the bottom of the cabinet. Figure 1-52 shows the positions of cable holes at the bottom of the cabinet.

Figure 4 Cable holes at the top of the cabinet (top view)

1

Figure 5 Cable holes at the bottom of the cabinet (top view)

2

ESD Jack
The ESD wrist strap is used to prevent the electrostatic discharge from damaging the equipment. One end of the ESD wrist strap should be connected to the ESD jack on the cabinet.
Wear an ESD wrist strap when installing the N66-22 cabinet. Insert one end of the ESD wrist strap into the ESD jack in the middle of the mounting angle, as shown in Figure 6.

6

 

The OSN 6800 Slot Description

The board area of the subrack has 21 slots, defined as IU1 to IU21 from left to right.

Slots of the subrack

 

  • IU1-IU18 are for service boards.
  • IU21 is for the AUX.
  • IU19 and IU20 are for the PIU.
  • IU18 is for the active SCC.
  • IU17 is available for the standby SCC or the other service boards.
  • IU9 is available for the active XCS or for the other service boards.
  • IU10 is available for the standby XCS or for the other service boards.

Mapping of Pair Slots

Pair slots refer to a pair of slots whose resident boards’ overhead can be processed by the buses on the backplanes. For the two boards in the paired slots, the inter-board cross-connection can be directly configured, and the cross-connect grooming of services can be realized without the cross-connect board. The OptiX OSN 6800 supports seven pair slots, which are IU1 and IU2, IU3 and IU4, IU5 and IU6, IU7 and IU8, IU11 and IU12, IU13 and IU14, IU15 and IU16.

Mapping of Boards and Slots

The table shows the mapping between boards and slots of the OptiX OSN 6800.

Mapping between boards and slots of the OptiX OSN 6800

Board Available slot
AUX IU21
CMR2 IU1-IU17
CMR4 IU1-IU17
D40 IU1-IU15
D40V IU1-IU15
DCP IU1-IU17
DCU IU1-IU17
DMR1 IU1-IU17
ECOM IU1-IU8, IU11-IU16
FIU IU1-IU17
HBA IU2-IU16
ITL IU1-IU17
L4G IU1-IU8, IU11-IU16
LDGD IU1-IU8, IU11-IU16
LDGS IU1-IU8, IU11-IU16
LOG IU1-IU8, IU11-IU16
LOM IU1-IU8, IU11-IU16
LQMS IU1-IU8, IU11-IU16
LQMD IU1-IU8, IU11-IU16
LSX IU1-IU17
LSXL IU1-IU14
LSXLR IU1-IU14
LSXR IU1-IU17
LWX2 IU1-IU17
LWXD IU1-IU17
LWXS IU1-IU17
M40 IU1-IU15
M40V IU1-IU15
MCA4 IU1-IU16
MCA8 IU1-IU16
MR2 IU1-IU17
MR4 IU1-IU17
MR8 IU1-IU16
NS2 IU1-IU8, IU11-IU16
OAU1 IU2-IU17
OBU1 IU1-IU17
OBU2 IU2-IU17
OLP IU1-IU17
RMU9 IU1-IU17
ROAM IU1-IU15
SBM2 IU1-IU17
SC1 IU1-IU17
SC2 IU1-IU17
SCC IU17, IU18
SCS IU1-IU17
TBE IU1-IU8, IU11-IU16
TDX IU1-IU8, IU11-IU16
TDG IU1-IU8, IU11-IU16
TMX IU1-IU17
TQS IU1-IU8, IU11-IU16
TQM IU1-IU8, IU11-IU16
VA1 IU1-IU17
VA4 IU1-IU17
WMU IU1-IU17
WSM9 IU1-IU15
WSD9 IU1-IU15
WSMD4 IU1-IU16
XCS IU9, IU10