The reason for this post is to retrieve some information on how to go about configuring a QoS policy for LWAPP/CAPWAP.
Currently, we have a 'hub-and-spoke' topology with one hub location and six spoke sites. Each spoke site has a 100Mbps link through our ISP to a single 1GB link at our hub site. We currently deploy a WLC4402 (running v220.127.116.11) at the hub site. The hub site and each spoke site contains a 3560 that is performing L3 functionality. We are planning on deploy approximately 30 1252 LW APs across our six spoke locations. These LW APs will run in H-REAP mode. We wanted to make sure that CAPWAP traffic to/from these APs gets priority (or a certain amount of bandwidth reserved) when communicating back to the centralized WLC.
Does anyone have any configuration examples of this type of scenario or can anyone point me in the right direction as far as documentation?
LWAPP control frames require prioritization, and LWAPP control frames are marked with a DSCP classification of CS6 , so thats already one to configure.
For LWAPP data packets, it goes something like this :
WMM-enabled clients have the classification of their frames mapped to a corresponding DSCP classification for LWAPP packets to the WLC. This mapping follows the standard IEEE CoS-to-DSCP mapping, with the exception of the changes necessary for QoS baseline compliance. This DSCP value is translated at the WLC to a CoS value on 802.1Q frames leaving the WLC interfaces.
Non-WMM clients have the DSCP of their LWAPP tunnel set to match the default QoS profile for that WLAN. For example, the QoS profile for a WLAN supporting 7920 phones would be set to platinum, resulting in a DSCP classification of EF for data frames packets from that AP WLAN.
LWAPP data packets from the WLC have a DSCP classification that is determined by the DSCP of the wired data packets sent to the WLC. The 80211.e classification used when sending frames from the AP to a WMM client is determined by the AP table converting DSCP to WMM classifications.
LWAPP 802.11 traffic can be divided generally into the following two additional types:
•802.11 management frames—802.11 management frames such as probe requests, and association requests and responses are classified automatically with a DSCP of CS6.
•801.11 data frames—Client data and 802.1X data from the client is classified according to the WLAN QoS settings, but packets containing 802.1X frames from the WLC are marked CS4. 802.11 data traffic classification depends on the QoS policies applied in the WLAN configuration, and is not automatic. The default classification for WLAN data traffic is best-effort.
I am aware that you are using a controller and AP's who will perform CAPWAP but everything said here is valid for that setup as well.
Transferring Crash file from standby:
Login to the Active WLC in HA.
(Cisco Controller) >transfer upload datatype crash
(Cisco Controller) >transfer upload filename <Desired filename>
(Cisco Controller) >transfer up...
This is the start of a display filter cross reference between Wireshark and OmniPeek.
The 1st installment is a table of advanced filters. More filters will be added as time allows.
It is a living doc, so check back for changes every so often
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I have created a Powershell script to automatically add a Wireless Guest User on Cisco WLCs. (tested on 2500 Series)
The script should be completely self explanatory.
Powershell SNMP Module (Install-Module -Name SNMP)
SNMP Write Access to...