I have had reports for slow/ disconnecting WiFi Clients ( smartphones ) at one of our remote sites. When testing connection on site, SNR looks ok and Signal strength looks ok ( see below output) . Connections to Wireless LAN and Cisco switch interfaces also look fine.
I ran a show client detail command for one of the Smartphones that is disconnecting and I got the below output ( some details clipped for privacy reasons ) . My question is this. Why would the client negotiate a data rate of 4 Mbps as indicated by the below output ? I thought the only possible data rates were 12, 18, 24, 36, 48, and 54 ( as configured on the Wireless controller - see below output for mandatory and supported data rates )
Also number of data retries is 5061 . Is this high or low or normal ? What does this value represent please and Is it related to frame retransmissions ?
show client detail
Client MAC Address...............................
Client Username ................................. N/A
Client Webauth Username ......................... N/A
Hostname: .......................................
Device Type: .................................... Unclassified
AP MAC Address...................................
AP Name..........................................
AP radio slot Id................................. 1
Client State..................................... Associated
User Authenticated by ........................... None
Client User Group................................
Client NAC OOB State............................. Access
Wireless LAN Id.................................. 13
Wireless LAN Network Name (SSID).................
Wireless LAN Profile Name........................
WLAN Profile check for roaming................... Disabled
Hotspot (802.11u)................................ Not Supported
Connected For ................................... 475 secs
BSSID............................................
Channel.......................................... 64
IP Address....................................... 172.17.96.205
Gateway Address.................................. 1.2.3.5
Netmask.......................................... 255.255.255.0
Association Id................................... 1
Authentication Algorithm......................... Open System
Reason Code...................................... 1
Client IPSK-TAG.................................. N/A
Status Code...................................... 0
Session Timeout.................................. 7200
Client CCX version............................... No CCX support
QoS Level........................................ Platinum
Avg data Rate.................................... 500
Burst data Rate.................................. 500
Avg Real time data Rate.......................... 500
Burst Real Time data Rate........................ 500
Avg Uplink data Rate............................. 500
Burst Uplink data Rate........................... 500
Avg Uplink Real time data Rate................... 500
Burst Uplink Real Time data Rate................. 500
802.1P Priority Tag.............................. disabled
Security Group Tag............................... Unknown(0)
KTS CAC Capability............................... No
Qos Map Capability............................... No
WMM Support...................................... Enabled
APSD ACs....................................... BK BE VI VO
Current Rate..................................... 4.0
Supported Rates.................................. 9.0,12.0,18.0,24.0,36.0,48.0,
............................................. 54.0
Mobility State................................... Export Foreign
Mobility Anchor IP Address....................... 172.17.60.10
Mobility Move Count.............................. 0
Security Policy Completed........................ Yes
Policy Manager State............................. RUN
Pre-auth IPv4 ACL Name........................... none
Pre-auth IPv4 ACL Applied Status................. Unavailable
Pre-auth IPv6 ACL Name........................... none
Pre-auth IPv6 ACL Applied Status................. Unavailable
Pre-auth Flex IPv4 ACL Name...................... none
Pre-auth Flex IPv4 ACL Applied Status............ Unavailable
Pre-auth Flex IPv6 ACL Name...................... none
Pre-auth Flex IPv6 ACL Applied Status............ Unavailable
Pre-auth redirect URL............................ none
Audit Session ID................................. 64600a0a000a624776b78e65
AAA Role Type.................................... none
Acct Interim Interval............................ 0
Local Policy Applied............................. none
IPv4 ACL Name.................................... none
AAA FlexConnect ACL Applied Status............... Unavailable
--More or (q)uit current module or <ctrl-z> to abort
IPv4 ACL Applied Status.......................... Unavailable
IPv6 ACL Name.................................... none
IPv6 ACL Applied Status.......................... Unavailable
Post-auth Flex IPv6 ACL Name..................... none
Post-auth Flex IPv6 ACL Applied Status........... Unavailable
Layer2 ACL Name.................................. none
Layer2 ACL Applied Status........................ Unavailable
URL ACL Name..................................... none
URL ACL Applied Status........................... Unavailable
Client Type...................................... SimpleIP
mDNS Status...................................... Enabled
mDNS Profile Name................................ default-mdns-profile
No. of mDNS Services Advertised.................. 0
Policy Type...................................... WPA2
Authentication Key Management.................... PSK
Encryption Cipher................................ CCMP-128 (AES)
Protected Management Frame ...................... No
Management Frame Protection...................... No
EAP Type......................................... Unknown
FlexConnect Data Switching....................... Central
FlexConnect Dhcp Status.......................... Central
FlexConnect Vlan Based Central Switching......... No
FlexConnect Authentication....................... Central
FlexConnect Central Association.................. No
Interface........................................ dummy
VLAN............................................. 0
Quarantine VLAN.................................. 0
Access VLAN...................................... 0
Local Bridging VLAN.............................. 0
Client Capabilities:
Radio Capability........................... 802.11ac-w2
CF Pollable................................ Not implemented
CF Poll Request............................ Not implemented
Short Preamble............................. Implemented
PBCC....................................... Not implemented
Channel Agility............................ Not implemented
Listen Interval............................ 10
Fast BSS Transition........................ Not implemented
11v BSS Transition......................... Implemented
Non-Operable Channels............................ None
Non-Prefer Channels.............................. None
Client Wifi Direct Capabilities:
WFD capable................................ No
Manged WFD capable......................... No
Cross Connection Capable................... No
Support Concurrent Operation............... No
Fast BSS Transition Details:
DNS Server details:
DNS server IP ............................. 0.0.0.0
DNS server IP ............................. 0.0.0.0
Assisted Roaming Prediction List details:
Client Dhcp Required: False
Allowed (URL)IP Addresses
-------------------------
AVC Profile Name: ............................... AUTOQOS-AVC-PROFILE
OpenDns Profile Name: ........................... none
Fastlane Client: ................................ No
Max DSCP: ....................................... 46
Nas Identifier: ................................. sww-wlc-2
Fabric Statistics
--------------------
Client Statistics:
Number of Bytes Received................... 4040093
Number of Bytes Sent....................... 21538938
Total Number of Bytes Sent................. 21538938
Total Number of Bytes Recv................. 4040093
Number of Bytes Sent (last 90s)............ 5077
Number of Bytes Recv (last 90s)............ 2248
Number of Packets Received................. 16032
Number of Packets Sent..................... 20108
Number of Interim-Update Sent.............. 0
Number of EAP Id Request Msg Timeouts...... 0
Number of EAP Id Request Msg Failures...... 0
Number of EAP Request Msg Timeouts......... 0
Number of EAP Request Msg Failures......... 0
Number of EAP Key Msg Timeouts............. 0
Number of EAP Key Msg Failures............. 0
Number of Data Retries..................... 5061
Number of RTS Retries...................... 0
Number of Duplicate Received Packets....... 0
Number of Decrypt Failed Packets........... 0
Number of Mic Failured Packets............. 0
Number of Mic Missing Packets.............. 0
Number of RA Packets Dropped............... 0
Number of Policy Errors.................... 0
Radio Signal Strength Indicator............ -54 dBm
Signal to Noise Ratio...................... 43 dB
Client Detected as Inactive................ No
Client RBACL Statistics:
Number of RBACL Allowed Packets............ 0
Number of RBACL Denied Packets............. 0
Client Rate Limiting Statistics:
Number of Data Packets Received............ 0
Number of Data Rx Packets Dropped.......... 0
Number of Data Bytes Received.............. 0
Number of Data Rx Bytes Dropped............ 0
Number of Realtime Packets Received........ 0
Number of Realtime Rx Packets Dropped...... 0
Number of Realtime Bytes Received.......... 0
Number of Realtime Rx Bytes Dropped........ 0
Number of Data Packets Sent................ 0
Number of Data Tx Packets Dropped.......... 0
Number of Data Bytes Sent.................. 0
Number of Data Tx Bytes Dropped............ 0
Number of Realtime Packets Sent............ 0
Number of Realtime Tx Packets Dropped...... 0
Number of Realtime Bytes Sent.............. 0
Number of Realtime Tx Bytes Dropped........ 0
Nearby AP Statistics:
cre-fap-2(slot 0)
antenna0: 361 secs ago................... -43 dBm
antenna1: 361 secs ago................... -43 dBm
cre-fap-2(slot 1)
antenna0: 464 secs ago................... -47 dBm
antenna1: 464 secs ago................... -47 dBm
cre-fap-1(slot 0)
antenna0: 362 secs ago................... -72 dBm
antenna1: 362 secs ago................... -72 dBm
cre-fap-1(slot 1)
antenna0: 765 secs ago................... -89 dBm
antenna1: 765 secs ago................... -89 dBm
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