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Experiencing slow WMV download speed.

I am experiencing slow download speed when downloading WMV files across a 525 pix running version 7.1.This only occurs with WMV as other Http traffic is fine.

what couls be the possible cause of this.

1 REPLY
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Re: Experiencing slow WMV download speed.

You can check the following url for slow WMV download process

http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_tech_note09186a00804c8b9f.shtml

http://www.cisco.com/univercd/cc/td/doc/product/multisec/asa_sw/v_70/cref_txt/gl.htm#wp1573329

When you use RTSP inspect command, there are the following Restrictions and Limitations:

The security appliance does not support multicast RTSP or RTSP messages over UDP.

PAT is not supported with the inspect rtsp command.

The security appliance does not have the ability to recognize HTTP cloaking where RTSP

messages are hidden in the HTTP messages.

The security appliance cannot perform NAT on RTSP messages because the embedded IP

addresses are contained in the SDP files as part of HTTP or RTSP messages. Packets could

be fragmented and the security appliance cannot perform NAT on fragmented packets.

You can configure NAT for Apple QuickTime 4 or RealPlayer. Cisco IP/TV only works with

NAT if the Viewer and Content Manager are on the outside network and the server is on the

inside network.

Media streams delivered over HTTP are not supported by RTSP application inspection. This

is because RTSP inspection does not support HTTP cloaking (RTSP wrapped in HTTP).

I guess your media application hits one of the above Restrictions. So when you remove

rtsp inspect, your media stream can pass PIX 7.0.

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