Cisco Cisco ASR 5500
Mobile Video Gateway Overview
Features and Functionality ▀
MVG Administration Guide, StarOS Release 17 ▄
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x-forwarded-for: (Optional) The subscriber or client’s IPv4 address. This x-header is inserted when MVG acts
as a non-transparent proxy to CAE.
x-adaptation-profile-index: (Optional) The index number of the video quality profile for the CAE to use to
select the level of video quality for adaptation.
The ECS HTTP Analyzer now supports parsing for content-range HTTP headers. This header is useful in detecting
HTTP video requests when using ECS-DPI ruledefs based on HTTP headers/URI.
HTTP video requests when using ECS-DPI ruledefs based on HTTP headers/URI.
For configuration instructions and a sample configuration, see the Mobile Video Gateway Configuration chapter.
Video Detection using HTTP Payload
Readdressing to CAE is done only for HTTP video traffic. Non-video traffic will be sent to the origin server (until flow
is readdressed to CAE for the first video request). The mechanism for detection of HTTP video traffic is based on
inspection of HTTP payload for video signatures. Only Response payloads will be inspected and not request payloads.
MVG supports video types such as FLV, ISOM (mp4, 3gp, 3g2, qt, f4v, m4v, etc.), moov, wmv, MPEG2_TS, AVI, and
so on.
is readdressed to CAE for the first video request). The mechanism for detection of HTTP video traffic is based on
inspection of HTTP payload for video signatures. Only Response payloads will be inspected and not request payloads.
MVG supports video types such as FLV, ISOM (mp4, 3gp, 3g2, qt, f4v, m4v, etc.), moov, wmv, MPEG2_TS, AVI, and
so on.
This feature has the following limitations:
This mechanism may have some performance impact.
Only the first packet of the response video header will be inspected. If video header is not complete in the first
packet of the payload due to TCP fragmentation, then video detection may not happen by this mechanism.
Chunk encoded video responses, and compressed/encoded videos may not be detected by this mechanism.
CAE Video Re-adressing Call Flows
Video Request Re-addressing
The UE requests an OTT video from the OS. In this case, the MVG recognizes that the request is for Video content and
steers the request to CAE instead of the OS for optimization. CAE delivers the optimized video which is proxied back to
UE by MVG.
steers the request to CAE instead of the OS for optimization. CAE delivers the optimized video which is proxied back to
UE by MVG.