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- About Sahil Mengi
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Member since
04-15-2011
63
Posts
68
Helpful
11
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
10-28-2014
07:57 AM
10-28-2014
07:57 AM
Hi Mounir, 1602 plugged to ur switch for vlan configured with dhcp and required options (option 43/60) or dns resolution should be able to find the wlc using discovery once it gets an ip. If you do not have dhcp option 43 configured, this is how you do it, http://www.cisco.com/c/en/us/support/docs/wireless-mobility/wireless-lan-wlan/97066-dhcp-option-43-00.html Else, on AP cli, debug capwap console cli capwap ap ip address <ip> <mask> capwap ap controller ip address <ip> capwap ap primary mwar <wlc name> Regards
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
10-28-2014
07:33 AM
10-28-2014
07:33 AM
Hi Tovio, 1. If you havent reduced the number of wlans serviced in this unique ap group, i am afraid its not serving you any good. The air is still busy. 2. Why do you need lower rates at all, 1,2,5.5 mbps at all? Have you tried disabling them at a global level? 3. What security do you have on this wlan? Is cckm enabled? http://www.cisco.com/c/en/us/td/docs/wireless/technology/vowlan/troubleshooting/VoWLAN_Troubleshooting_Checklist.html
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Created by
Sahil Mengi
in Wireless and Mobility
in Wireless and Mobility
01-09-2014
10:37 AM
01-09-2014
10:37 AM
Great.. i think i know who worked your case, didnt know that was yours though.. Happy that we have a resolution now. Cheers..
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
12-31-2013
08:04 AM
12-31-2013
08:04 AM
Making a come back on this, here is what i have. CSCul57266 Show client detail on WLC is inaccurate compared to the Flexconnect AP Note# Specific case: Local Auth is enabled. Workaround: Check "show capwap reap association" reflecting true stats. Now for the stated/suspected client drops/reassociations, we would need logs. This should validate if it truly is a drop issue, or just the incorrect stats displayed for those. HTH Sahil
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
12-30-2013
08:07 AM
12-30-2013
08:07 AM
You guys could be running into this CSCui67640 Clean:Failed to get DHCP response on interface. Marking interface dirty Open a tac case to verify and get a fix. Note# Preferably attach wlc port wired trace to the TAC case. HTH Sahil
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12-27-2013
11:00 AM
Try this, debug capwap console cli test mesh mode local Thanks, Sahil
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
12-24-2013
01:31 PM
12-24-2013
01:31 PM
OK, gotta ask one more question, Are you really using interface groups or this error is without those configured? Plus get the output of "grep include SIm "show msglog" This could be a known issue. Thanks Sahil
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
12-24-2013
01:15 PM
12-24-2013
01:15 PM
Hi, Does the client disconnect while stationary or during roaming? What is the code running on this wlc? Please share, config paging disable show wlan If you can share this debug while capturing atleast one or two drop events. debug client debug dot11 management enable Thanks, Sahil
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
in Other Wireless - Mobility Subjects
12-24-2013
01:06 PM
12-24-2013
01:06 PM
What wlc code are you running? Do you see this in syslog/msglog "Failed to get DHCP response on interface. Marking interface dirty"?
What does "grep include SIM "show msglog" look like? Thanks, Sahil
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Created by
Sahil Mengi
in Wireless and Mobility
in Wireless and Mobility
12-24-2013
12:32 PM
12-24-2013
12:32 PM
Roberto, Yes, a tac case is the way to go on this. Infact am investigating this issue as well. If you can just attch the screenshots from Administration>Data Sources >Device data sources Detail dashboards >>Application Also, change looging to Trace, Admin>Logging>Message: Trace>Save Pull the logs after 15 minutes. We are interested in, ifm_da, da_daemon.0 and sam_daemon.0
Thanks, Sahil
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Created by
Sahil Mengi
in Wireless - Mobility Documents
in Wireless - Mobility Documents
10-29-2013
03:43 PM
10-29-2013
03:43 PM
Introduction The data rate display format employed for 802.11ac is, Format: aX.YcZ X = mcs (modulation coding scheme) 0-9
Y = No of spatial streams, 1-3.
Z = Bandwidth 2, 4, 8 (2 = 20Mhz, 4=40Mhz, 8=80Mhz)
c = b for Beamform, s for STBC, - none
s = Guard Interval, indicates Short guard interval applicable over LGI (Long guard interval) Some Examples Datarate: a1.1-2 X = mcs 1
Y = 1 (Single spatial stream)
- = Nodifferentiation for beamform/stbc
Z = 2 (20 Mhz wide) Datarate: a9.1-4 X = mcs9
Y = 1 (Single spatial stream)
- = No diffrentiation for bf/stbc
Z = 4 (40 Mhz wide) Interesting section from "Sh controllers dot11radio2" AP-8-1-11#sh cont dot11Radio 2
!
interface Dot11Radio2
Radio BCM radio, Base Address 0600.0011.ac00, BBlock version 0.00, Software version 6.00.163
Serial number: FOC17403NF1
Number of supported simultaneous BSSID on Dot11Radio2: 8
Carrier Set: Americas (OFDM) (US) (-A)
Uniform Spreading Required: Yes
Configured Frequency: 5180 MHz Channel 36 80MHz
Antenna: Rx[a b c ]
Tx[a b c ofdm all]
Internal
Gain [Allowed 8, In Use 8] (dBi x 2), In Use 8] (dBi x 2), In Use 8] (dBi x 2), In Use 8] (dBi x 2), Reported 0, Configured 0, In Use 8] (dBi x 2)
Active Rates: basic-6.0 9.0 basic-12.0 18.0 basic-24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2 m16-2 m17-2 m18-2 m19-2 m20-2 m21-2 m22-2 m23-2 a0.1-2 a1.1-2 a2.1-2 a3.1-2 a4.1-2 a5.1-2
Current Rates: basic-6.0 9.0 basic-12.0 18.0 basic-24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2 m16-2 m17-2 m18-2 m19-2 m20-2 m21-2 m22-2 m23-2 a0.1-2 a1.1-2 a2.1-2 a3.1-2 a4.1-2 a5.1-2
Allowed Rates: 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0
All Rates: 6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2 m16-2 m17-2 m18-2 m19-2 m20-2 m21-2 m22-2 m23-2 a0.1-2 a1.1-2 a2.1-2 a3.1-2 a4.1-2 a5.1-2 a6.1-2 a7.1-2 a8.1-2 a9.1-4 a0.2-2 a1.2-2 a2.2-2 a3.2-2 a4.2-2 a5.2-2 a6.2-2 a7.2-2 a8.2-2 a9.2-4 a0.3-2 a1.3-2 a2.3-2 a3.3-2 a4.3-2 a5.3-2 a6.3-2 a7.3-2 a8.3-2 a9.3-2
Default Rates: basic-6.0 9.0 basic-12.0 18.0 basic-24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2 m16-2 m17-2 m18-2 m19-2 m20-2 m21-2 m22-2 m23-2 a0.1-2 a1.1-2 a2.1-2 a3.1-2 a4.1-2 a5.1-2 a6.1-2 a7.1-2 a8.1-2 a9.1-4 a0.2-2 a1.2-2 a2.2-2 a3.2-2 a4.2-2 a5.2-2 a6.2-2 a7.2-2 a8.2-2 a9.2-4 a0.3-2 a1.3-2 a2.3-2 a3.3-2 a4.3-2 a5.3-2 a6.3-2 a7.3-2 a8.3-2 a9.3-2
Best Range Rates: basic-6.0 9.0 12.0 18.0 24.0 36.0 48.0 54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2 m16-2 m17-2 m18-2 m19-2 m20-2 m21-2 m22-2 m23-2 a0.1-2 a1.1-2 a2.1-2 a3.1-2 a4.1-2 a5.1-2 a6.1-2 a7.1-2 a8.1-2 a9.1-4 a0.2-2 a1.2-2 a2.2-2 a3.2-2 a4.2-2 a5.2-2 a6.2-2 a7.2-2 a8.2-2 a9.2-4 a0.3-2 a1.3-2 a2.3-2 a3.3-2 a4.3-2 a5.3-2 a6.3-2 a7.3-2 a8.3-2 a9.3-2
Best Throughput Rates: basic-6.0 basic-9.0 basic-12.0 basic-18.0 basic-24.0 basic-36.0 basic-48.0 basic-54.0 m0-2 m1-2 m2-2 m3-2 m4-2 m5-2 m6-2 m7-2 m8-2 m9-2 m10-2 m11-2 m12-2 m13-2 m14-2 m15-2 m16-2 m17-2 m18-2 m19-2 m20-2 m21-2 m22-2 m23-2 a0.1-2 a1.1-2 a2.1-2 a3.1-2 a4.1-2 a5.1-2 a6.1-2 a7.1-2 a8.1-2 a9.1-4 a0.2-2 a1.2-2 a2.2-2 a3.2-2 a4.2-2 a5.2-2 a6.2-2 a7.2-2 a8.2-2 a9.2-4 a0.3-2 a1.3-2 a2.3-2 a3.3-2 a4.3-2 a5.3-2 a6.3-2 a7.3-2 a8.3-2 a9.3-2
Current Voice Rates: basic-6.0 basic-12.0 basic-24.0 [disabled until voice packet-discard enabled]
Default Voice Rates: basic-6.0 basic-12.0 basic-24.0
Managment Rates: basic-6.0
Multicast Rates: basic-6.0 basic-12.0 basic-24.0
Multicast Active rate: 24.0
RTS Rates: basic-6.0 basic-12.0 basic-24.0
RTS Active rate 24.0
RTS Max rate 24.0
Rateset and MCS maps:
Default configured rateset and MCS map:
[Based on configuration only]
[ 6(b) 9 12(b) 18 24(b) 36 48 54 ]
MCS SET : [ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ]
VHT SET : 0x1 1x1 2x1 3x1 4x1 5x1 6x1 7x1 8x1 9x1
: 0x2 1x2 2x2 3x2 4x2 5x2 6x2 7x2 8x2 9x2
: 0x3 1x3 2x3 3x3 4x3 5x3 6x3 7x3 8x3 9x3
Current operational rateset and MCS map:
[Based on nss, band and chan width settings]
[ 6(b) 9 12(b) 18 24(b) 36 48 54 ]
MCS SET : [ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ]
VHT SET : 0x1 1x1 2x1 3x1 4x1 5x1 6x1 7x1 8x1 9x1
: 0x2 1x2 2x2 3x2 4x2 5x2 6x2 7x2 8x2 9x2
: 0x3 1x3 2x3 3x3 4x3 5x3 7x3 8x3 9x3 Calculate PHY datarate For calculating the physical layer speed following formula is applied. Formula = { [Bandwidth (As in no. of data subcarriers) x No. of spatial Strms. x Databits per sub-carrier] / Time per ofdm symbol } Table for standard values: Header 1 Header 2 Header 3 Header 4 Header 5 PHY BW (No. of data Subcarriers No. of Spatial Streams Databits per subcarrier Time per OFDM Symbol 11N or AC 20 Mhz (56) 1-4 Up to 5/6 x log^2(64) = 5 3.6 µs(SGI) 11N or AC 40 Mhz (108) 1-4 Up to 5/6 x log^2(64) = 5 4 µs (LGI) 11AC only 80 Mhz (234) 5-8 Up to 5/6 x log^2 (256) = 6.67 11Ac only 160 Mhz (2 x 234) 5-8 Up to 5/6 x log^2 (256) = 6.67 Related Information http://tools.cisco.com/squish/4E33c
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Labels:
2602i LAPs Refuse to Join Controller
in Wireless and Mobility
09-10-2013
10:28 AM
09-10-2013
10:28 AM
I think Shankar has hit the right spot. +5 Shankar This could very well be the case of ap shipped/ordered as mesh. In addition to what has been said for adding mac address, you can issue following on the ap cli "test mesh mode local". With 3850 if the wcm (controller) on the same stack is intended for this ap to join, you dun need any discovery options. AP has to be in same vlan as wlc management. Thanks Sahil
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09-06-2013
02:18 PM
For 2602s you need a minimum of 7.2.110.0, you are running 7.0.220.0 on the wlc. Thats the reason discovery is being rejected, *Mar 1 00:03:31.811: %CAPWAP-3-ERRORLOG: Discovery response from MWAR 'Cisco_55:c1:84'running version 7.0.220.0 is rejected. Upgrade wlc to 7.2.110.0 or above. http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00805f381f.shtml Thanks Sahil
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Created by
Sahil Mengi
in Wireless and Mobility
in Wireless and Mobility
09-06-2013
02:14 PM
09-06-2013
02:14 PM
You need zero config on the access point itself, once switchport and discovery is configured correctly, there is ip reachability, it should be able to discover and join the wlc. Thanks Sahil
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Created by
Sahil Mengi
in Wireless and Mobility
in Wireless and Mobility
09-06-2013
02:12 PM
09-06-2013
02:12 PM
Hi, Here are the docs for you to configure the basic switch port config for AP's i.e 2600s and wlc. Wlc port should be configured as trunk. AP port has to be access. CAP2600 series requires a wlc software of minimum 7.2.110.0 (Make sure you have this or above release) To upgrade if you need to follow this. http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00805f381f.shtml 1. http://www.cisco.com/en/US/products/ps6366/products_configuration_example09186a0080665cdf.shtml (SW port configs) 2. http://www.cisco.com/en/US/tech/tk722/tk809/technologies_tech_note09186a00806c9e51.shtml (ANother very importand thing, discovery mechanism, choose appropriately) If you choose dhcp option 43, it uses TLV format. Type is always f1, length is 4*(no.of wlc for which you want to provide discovery for , in ur case one) Value = Hex conversion of the management ip address of wlc. A video for the process, http://www.youtube.com/watch?v=oOh_Iv1CHxQ. Thanks Sahil
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Created by
Sahil Mengi
in Other Wireless - Mobility Subjects
10-28-2014
10-28-2014
Hi Mounir, 1602 plugged to ur switch for vlan configured with dhcp and
required options (option 43/6...
10-28-2014
Hi Tovio, 1. If you havent reduced the number of wlans serviced in this
unique ap group, i am afraid...
Created by
Sahil Mengi
in Wireless and Mobility
01-09-2014
01-09-2014
Great.. i think i know who worked your case, didnt know that was yours
though.. Happy that we have a...
12-31-2013
Making a come back on this, here is what i have.CSCul57266 Show client
detail on WLC is inaccurate c...
12-30-2013
You guys could be running into this CSCui67640 Clean:Failed to get DHCP
response on interface. Marki...
12-24-2013
OK, gotta ask one more question, Are you really using interface groups
or this error is without thos...
12-24-2013
Hi,Does the client disconnect while stationary or during roaming?What is
the code running on this wl...
12-24-2013
What wlc code are you running?Do you see this in syslog/msglog "Failed
to get DHCP response on inter...
Created by
Sahil Mengi
in Wireless and Mobility
12-24-2013
12-24-2013
Roberto,Yes, a tac case is the way to go on this. Infact am
investigating this issue as well.If you ...
Created by
Sahil Mengi
in Wireless - Mobility Documents
10-29-2013
10-29-2013
IntroductionThe data rate display format employed for 802.11ac is,
Format: aX.YcZX = mcs (modulation...
09-10-2013
I think Shankar has hit the right spot.+5 ShankarThis could very well be
the case of ap shipped/orde...
09-06-2013
For 2602s you need a minimum of 7.2.110.0, you are running 7.0.220.0 on
the wlc.Thats the reason dis...
Created by
Sahil Mengi
in Wireless and Mobility
09-06-2013
09-06-2013
You need zero config on the access point itself, once switchport and
discovery is configured correct...
Created by
Sahil Mengi
in Wireless and Mobility
09-06-2013
09-06-2013
Hi,Here are the docs for you to configure the basic switch port config
for AP's i.e 2600s and wlc.Wl...
Public Statistics
| Date Registered | 04-15-2011 01:49 PM |
| Date Last Visited | 09-25-2019 12:21 AM |
| Total Messages Posted | 63 |
| Total Helpful Votes Received | 68 |
Helpful Votes From
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|---|---|
| 5 | |
| 5 | |
| 5 | |
| 5 | |
| 5 |
