SR520 WLAN and QOS

Hello all,
I wanted to know if the WLAN on a SR520 supports QOS.
We are trying to setup a teleworker site and want to stick with the 500 family of devices.  The requirement of the teleworker site is to have hard wired PCs connecting to the SR520 and a wireless phone at the teleworker site with good voice quality (QOS).
For Example, take the UC500 (not a typo UC500) and its built-in WLAN (assuming you order it this way).  According to the documentation the WLAN will work with the Cisco 7921 (for example), but does not support QOS over that WLAN antenea, you must get a WAP or WLC and WAP combination to support QOS over WLAN.
I would appreciate seeing this in a Cisco official document.
Thanks, John

The SR520 is WMM certified, but it does not support diversity. For mixed wireless voice and wireless data deployments it should be a good choice. However, you are sayig that the PC's will be wired to the network, while the voice will be wireless. In this case, I think that more important than WLAN QoS is WAN QoS. The reason is that with this being a teleworker deployment, the 7921 will be registering to a remote UC500.
With regards to the lack of QoS/WMM support in the UC500, that has changed somehow. We still mandate that you deploy a WAP/WLC when using the 7921. But with the new SPA525 phone (wireless desk phone), CCA will push QoS configuration for the embedded and external access points, depending on the deployment model. Notice that this is possible because there are no roaming or mobile considerations (the SPA525 is a "static" phone).
Hope this helps,
Marcos

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    Being able to discover and communicate with all our workstations in our sites is crucial requirement....
    This microsoft article says, http://technet.microsoft.com/en-gb/library/cc771255.aspx
    Dynamic updates can be sent for any of the following reasons or events:
        * An IP address is added, removed, or modified in the TCP/IP properties configuration for any one of the installed network connections.
        * An IP address lease changes or renews with the DHCP server any one of the installed network connections. For example, when the computer is started or if the ipconfig /renew command is used.
        * The ipconfig /registerdns command is used to manually force a refresh of the client name registration in DNS.
        * At startup time, when the computer is turned on.
        * A member server is promoted to a domain controller.
    However from what I am reading, both adapters(LAN,WLAN), if configured to update DNS, will register their Ip addresses. Which leads to an invalid DNS entry if the laptop is undocked, as the IP for LAN adapter isn't removed.
    Has anyone solved this problem for their organizations without
    1. Controlling which adapter is used - large management overhead
    2. Only allowing one adapter to register with DNS
        - If using LAN adapter for DNS, then anytime the user is using WLAN, their workstation doesn't have a valid DNS entry. Which also impacts Kerberos.
        - If using the WLAN, then we would have to invest a large amount of money into Wireless to provide the necessary bandwidth
    3. Setting GPO's to configure dns updates every 30mins on clients
        - Inconsistent results...which I think is sometimes a worse problem
    4. Defining separate DNS suffixes for their WLAN networks (I read some people did this)
        - This doesn't remove an invalid DNS entry ie the ip(LAN adapter) DNS entry if the laptop is undocked
        - It also creates problems with kerberos, if the host is registered under a separate DNS suffix from the Active Directory domain name

    Hi,
    From my point of view, DNS can't be so smart.
    As a workaround, please try the steps below,
    Disable the DNS register of wireless adapter
    Put "ipconfig /regiserdns" in a bat file
    Everytime when the wired network is undocked, run the bat file.
    If the wired network is docked, wired adapter will register the DNS record.
    When the wired network is undocked, run the bat file, then the wireless adapter will register the DNS record.
    If the wired network is docked again, wired adapter will register the DNS record automatically.
    Best Regards.
    Steven Lee
    TechNet Community Support

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