Introduction
DME Admin Guide 3
DME Supported Protocols
The table below describes the supported protocols of the DME.
DME Se rve r Mo de ls
Vbrick currently supports a variety of shelf and rack-mount models. See the latest DME
Release Notes for a detailed description of DME models and specifications. There are no
absolute rules for sizing a multipurpose device like the DME but there are some basic
guidelines that can help you select the right model.
The smaller Model 7530 does not offer redundant power supplies or redundant VOD storage
so if these attributes are important, you should consider the larger models. The Model 7530 is
shelf-mount only while the larger models are rack mount 1U and 2U servers. Users seeking
significant VOD content playback should consider one of the two larger models.
The RAID arrays built into the Models 7550 and 7570 (seen below) are much more powerful
and better suited for frequent requests than for concurrent VOD playback. The single drive
on the Model 7530 is well suited for small to medium offices that have occasional VOD
demands.
Protocol Description
Incoming • RTSP Announce
• RTP Over UDP (with RTCP) Unicast and Multicast
• RTP over TCP (with RTCP) Unicast Only
• RTP over UDP (SDP file delivered via FTP)
• FTP for VOD file transfer
• RTMP via RTMP Push over TCP
• Transport Stream (MPEG2TS delivery of H.264 audio
and video content)
Outgoing • RTP via RTSP (stream)
• UDP, TCP Interleaved, and HTTP Tunneled
• RTP via RTSP (relay - Push)
• UDP, TCP Interleaved using Announce
• RTMP (stream and relay)
• RTMP (Flash Multicast)
• HTTP (progressive download)
• TS (transport stream)
• HLS (Apple HTTP iPad/iPhone live streaming)
• HDS (Adobe Flash HTTP dynamic streaming)
• HTTP Caching Server
Management • HTTP/HTTPS for management
• IGMPv3
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