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10 C1640M-B (3/06)
ENDURA A BLOCK
The A Block is the most important design entity of the network. The A Block is functionally responsible for encoding, recording, and storage of
the video streams entering the Endura network (both live and playback video).
The A Block is summarized as follows:
• Each A Block can support up to 48 Encoders and one NVR5100.
• Each A Block is assigned to a specific VLAN.
• The number of A Blocks is unlimited.
• Each A Block has only one NVR5100 for recording of video streams from all Encoders in the A Block. Additional storage is provided by
SEB5000 storage expansion boxes.
Figure 1 shows the Endura components that comprise the A Block. The SEB5000 is shown directly connected to the NVR5100 using a patch
cable. If multiple SEB5000s are required, you can use a dedicated, Pelco-approved gigabit Ethernet switch to expand the video storage of the
NVR5100. For more information about connecting SEB5000s to the NVR5100, refer to Connecting the NVR5100 and SEB5000s on page 26 and
Connecting Multiple NVR5100s and SEB5000s on page 26.
Figure 1. A Block: Encoding, Recording, and Playback
BROADCAST DOMAINS AND VLANS
In a network, the logical area within which all devices can see each other’s broadcasts is referred to as a broadcast domain. Endura components
generate multicast traffic, which in some cases can be treated like broadcast traffic, depending on the switch. For this reason, it is important to
isolate these broadcasts and to create a separate broadcast domain for each Endura block on the network. The most efficient approach is to use
VLANS to separate the broadcast domains (refer to Figure 2).
Figure 2. Using VLANs to Segment the Network into Separate Broadcast Domains for Each Block
NVR
SEB
ENCODER
ENCODER
A BLOCK
LAYER 2 SWITCH
INTERFACES WITH
THE CORE BLOCK
NVR
SEB
ENCODER
ENCODER
A BLOCK
BROADCAST DOMAIN 1
VLAN 3
A BLOCK 1
LAYER 2 SWITCH
CORE SWITCH
LAYER 3 SWITCH
VLAN 1
B BLOCK
BROADCAST DOMAIN 2
VLAN 4
VLAN 3
VLAN 3
VLAN 3