Wireless

[shaikh.zaid22]

Hi guys,

i have a 1602 Aps in my organisation and 5508 wlc, the problem is that am facing weak signal coverage , 3 apS ARE INSTALLED AT A HEIGHT OF 30 FT due to which even if am standing beneath the ap only one signal bar its displaying.

other aps are installed at a normal height but the employees are facing lots of problems.

Pl help .

[George Stefanick]

You need to be more specific what your problems are .. 

[shaikh.zaid22]

Hey George,

There was already 2600 sereis running and we installed this 1602APs to cover the required area that was not having coverage but now after installing the emplyoees are facing very weah signals at their places so much so that they have to change their locations to the areas where 2600aps are installed.

and other thing is that in the basement section the ceiling height is 30ft to 35ft there also the ppl are facing problem, i did not understand this as the area is completlety open space 

pl help.

[Scott Fella]

Seems like you may have a configuration issue... I would take a look to verify that the 1600's are enabled and both radios are up status. I would also look to see if your using AP Groups and the new AP's are not in the proper group. 

As far as the height, I think the issue is finding what the problem is as far as what I mentioned. You could always use conduit pipe and drop the AP's lower to 15' - 20'.  The low voltage guys should be able to do that for you. 

-Scott 

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[shaikh.zaid22]

guys,

I have been to the site and following things i noticed 

1) standing beneath the AP also am geting very bad RSSI

2) There is GSM boosters also installed near the APs

The AP model is AIR-CAP-1602E-EK9 onto which there is external knobs are present for external ANtennas which we are not using. DO i need to buy separate antenna and fix it into the knobs ?

Does the country code on the wlc also affects the configurations? as in my case it been to its default GB (and am in GCC country)

Pl find the outputs as attached

=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2016.01.13 12:54:05 =~=~=~=~=~=~=~=~=~=~=~=
show ap config 802.11b 9th Floor AP

Cisco AP Identifier.............................. 134
Cisco AP Name.................................... 9th Floor AP
Country code..................................... GB - United Kingdom
Regulatory Domain allowed by Country............. 802.11bg:-E 802.11a:-E
AP Country code.................................. GB - United Kingdom
AP Regulatory Domain............................. -E
Switch Port Number .............................. 13
MAC Address...................................... f4:cf:e2:d5:82:a5
IP Address Configuration......................... DHCP
IP Address....................................... 10.X.X.X
IP NetMask....................................... 255.255.255.0
Gateway IP Addr.................................. 10.X.X.X
NAT External IP Address.......................... None
CAPWAP Path MTU.................................. 1485
Telnet State..................................... Globally Disabled
Ssh State........................................ Globally Disabled
Cisco AP Location................................ 09GG-03
Cisco AP Floor Label............................. 0
Cisco AP Group Name.............................. Headquarters
Primary Cisco Switch Name........................ WLC1
Primary Cisco Switch IP Address.................. 10.X.X.X
Secondary Cisco Switch Name...................... WLC2
Secondary Cisco Switch IP Address................ 10.X.X.X
Tertiary Cisco Switch Name.......................
Tertiary Cisco Switch IP Address................. Not Configured
Administrative State ............................ ADMIN_ENABLED
Operation State ................................. REGISTERED
Mirroring Mode .................................. Disabled
AP Mode ......................................... Local
Public Safety ................................... Disabled
AP SubMode ...................................... Not Configured
Remote AP Debug ................................. Disabled
Logging trap severity level ..................... informational
Logging syslog facility ......................... kern
S/W Version .................................... 8.0.121.0
Boot Version ................................... 15.2.2.0
Mini IOS Version ................................ 7.5.1.73
Stats Reporting Period .......................... 180
Stats Collection Mode ........................... normal
LED State........................................ Enabled
PoE Pre-Standard Switch.......................... Disabled
PoE Power Injector MAC Addr...................... Disabled
Power Type/Mode.................................. PoE/Full Power
Number Of Slots.................................. 2

--More-- or (q)uit
AP Model......................................... AIR-CAP1602E-E-K9
AP Image......................................... C1600-K9W8-M
IOS Version...................................... 15.3(3)JA5$
Reset Button..................................... Enabled
AP Serial Number................................. FGL1852XC8G
AP Certificate Type.............................. Manufacture Installed
AP User Mode..................................... AUTOMATIC
AP User Name..................................... admin
AP Dot1x User Mode............................... Not Configured
AP Dot1x User Name............................... Not Configured
Cisco AP system logging host..................... 255.255.255.255
AP Up Time....................................... 45 days, 03 h 27 m 14 s
AP LWAPP Up Time................................. 45 days, 03 h 24 m 47 s
Join Date and Time............................... Sun Nov 29 09:29:21 2015
Join Taken Time.................................. 0 days, 00 h 02 m 26 s

Attributes for Slot 0
Radio Type................................... RADIO_TYPE_80211n-2.4
Administrative State ........................ ADMIN_ENABLED
Operation State ............................. UP
Radio Role .................................. ACCESS
Radio Mode .................................. Local
CellId ...................................... 0

Station Configuration
Configuration ............................. AUTOMATIC
Number Of WLANs ........................... 8
Medium Occupancy Limit .................... 100
CFP Period ................................ 4
CFP MaxDuration ........................... 60
BSSID ..................................... 3c:5e:c3:73:9b:50
Operation Rate Set
1000 Kilo Bits........................... MANDATORY
2000 Kilo Bits........................... MANDATORY
5500 Kilo Bits........................... MANDATORY
11000 Kilo Bits.......................... MANDATORY
6000 Kilo Bits........................... SUPPORTED
9000 Kilo Bits........................... SUPPORTED
12000 Kilo Bits.......................... SUPPORTED
18000 Kilo Bits.......................... SUPPORTED
24000 Kilo Bits.......................... SUPPORTED
36000 Kilo Bits.......................... SUPPORTED
48000 Kilo Bits.......................... SUPPORTED
54000 Kilo Bits.......................... SUPPORTED
MCS Set
MCS 0.................................... SUPPORTED
MCS 1.................................... SUPPORTED
MCS 2.................................... SUPPORTED
MCS 3.................................... SUPPORTED
MCS 4.................................... SUPPORTED
MCS 5.................................... SUPPORTED
MCS 6.................................... SUPPORTED
MCS 7.................................... SUPPORTED
MCS 8.................................... SUPPORTED
MCS 9.................................... SUPPORTED
MCS 10................................... SUPPORTED
MCS 11................................... SUPPORTED
MCS 12................................... SUPPORTED
MCS 13................................... SUPPORTED
MCS 14................................... SUPPORTED
MCS 15................................... SUPPORTED
MCS 16................................... DISABLED
MCS 17................................... DISABLED
MCS 18................................... DISABLED
MCS 19................................... DISABLED
MCS 20................................... DISABLED
MCS 21................................... DISABLED
MCS 22................................... DISABLED
MCS 23................................... DISABLED

Beacon Period ............................. 100
Fragmentation Threshold ................... 2346
Multi Domain Capability Implemented ....... TRUE
Multi Domain Capability Enabled ........... TRUE
Country String ............................ GB

Multi Domain Capability
Configuration ............................. AUTOMATIC
First Chan Num ............................ 1
Number Of Channels ........................ 13

MAC Operation Parameters
Configuration ............................. AUTOMATIC
Fragmentation Threshold ................... 2346
Packet Retry Limit ........................ 64

Tx Power
Num Of Supported Power Levels ............. 4
Tx Power Level 1 .......................... 18 dBm
Tx Power Level 2 .......................... 15 dBm
Tx Power Level 3 .......................... 12 dBm
Tx Power Level 4 .......................... 9 dBm
Tx Power Configuration .................... AUTOMATIC

Current Tx Power Level .................... 1
Tx Power Assigned By ...................... DTPC

Phy OFDM parameters
Configuration ............................. AUTOMATIC
Current Channel ........................... 1
Channel Assigned By ....................... DCA
Extension Channel ......................... NONE
Channel Width.............................. 20 Mhz
Allowed Channel List....................... 1,2,3,4,5,6,7,8,9,10,11,12,
......................................... 13
TI Threshold .............................. -50
DCA Channel List........................... Global
Legacy Tx Beamforming Configuration ....... CUSTOMIZED
Legacy Tx Beamforming ..................... ENABLED
Antenna Type............................... EXTERNAL_ANTENNA
External Antenna Gain (in .5 dBi units).... 0
Diversity.................................. DIVERSITY_ENABLED
802.11n Antennas
A....................................... ENABLED
B....................................... ENABLED
C....................................... ENABLED

Performance Profile Parameters
Configuration ............................. AUTOMATIC
Interference threshold..................... 10 %
Noise threshold............................ -70 dBm
RF utilization threshold................... 80 %
Data-rate threshold........................ 1000000 bps
Client threshold........................... 12 clients
Coverage SNR threshold..................... 12 dB
Coverage exception level................... 25 %
Client minimum exception level............. 3 clients
Rogue Containment Information
Containment Count............................ 0

CleanAir Management Information
CleanAir Capable......................... Yes
CleanAir Management Administration St.... Disabled
CleanAir Management Operation State...... Down
Rapid Update Mode........................ Off
Spectrum Expert connection............... Enabled
CleanAir NSI Key....................... 6C6C4675BBDCFA14BA17BAF22FD8783D
Spectrum Expert Connections counter.... 0
CleanAir Sensor State.................... Configured

Radio Extended Configurations
Beacon period.............................. 100 milliseconds
Beacon range............................... AUTO
Multicast buffer........................... AUTO
Multicast data-rate........................ AUTO
RX SOP threshold........................... AUTO
CCA threshold.............................. AUTO

[Sandeep Choudhary]

Hi,

Its a AP with external Antenna:AIR-CAP-1602E-E-K9.

You must use External antenna and connect to AP, Without these you will get nothing, means very bad RSSI.

*** There is no problem with country code as Cisco AP and WLC is in same full the regulatory domain/Country.

Regards

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[shaikh.zaid22]

George/Sandeep,

I do not have the external antennas installed, i guess that all AP has built-in internal antenas so i did not purchased the ext ant.

Do i need to ? without this no other solution?

[Sandeep Choudhary]

HI Shaikh, Its and external antenna AP(1602E). There is only solution and that is, buy External Antenna and connect to AP. no other choice.

Regards

Don't forget to rate helpful posts

[shaikh.zaid22]

Hi Sandeep,

Thank You very much for your time.

[shaikh.zaid22]

hi,

 can anyone assist, as I would like to know which model of antenna would be feasible enough to provide good signal broadcast and coverage?

[Scott Fella]

We can't properly tell you what would work without really knowing the environment.  This is why a site survey should always be considered.  As far as antennas, you have a few choices:

AIR-AN2524DB-R/AIR-ANT2524DG-R/AIR-ANT2524DW-R

For the high ceilings, I would either ruse the ones mentioned above or these:

AIR-ANT2544V4M-R=

How well they will provide coverage, depends on the building material and attenuation that we can't tell you.

-Scott

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[shaikh.zaid22]

Hi Scott,

AIR-ANT2524DB-R

2.4 GHz 2 dBi/5 GHz 4 dBi Dipole Ant., Blk, RP-TNC

Thanks

[Scott Fella]

If you use the di-pole antennas, make sure that the antennas are pointed vertically and not horizontal or at a crazy angle.  Hope that gets you the coverage you need. 

-Scott 

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[shaikh.zaid22]

Ok scott will do as directed!

Thanks:p

[George Stefanick]

First things first. Do you have external antennas installed on the al ? Can you take a pic of the ap ?