System Planning
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Reserved IPv6 address space
If the operator let the system automatically generate the IPv6 addresses for the network, the following
private IPv6 address spaces are reserved:
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FD00:CEED::0/32 for seed prefix of the mesh network
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FD00:BA5E::0/32 for all the PoP nodes and the E2E Controller
E2E and cnMaestro deployment consideration
While the E2E and cnMaestro are two separate entities, they can be hosted on separate computers or the
same computer. While the E2E communicates with the cnMaestro using IPv4, the E2E communicates
with the cnWave radios using IPv6.
Ethernet bridging
Layer 2 (L2) bridging
L2 Bridge employs Ethernet over GRE (EoGRE) to carry the customer traffic across the Terragraph
network. when L2 Bridge is enabled, all CNs and DNs automatically create an EoGRE tunnel with their
PoP node and the PoP node creates a tunnel back to each of those CNs/DNs. The tunnel is capable of
carrying both IPv4 and IPv6 customer traffic between CN and PoP. The IPv6 over the tunnel can be
optionally disabled from the UI.
An ingress Ethernet frame from a customer’s network must not exceed 1942 bytes. On top of this, the
device (CN, DN, or PoP) adds 58 bytes of tunnel headers. Hence, the maximum size of an encapsulated
Ethernet frame is 2000 bytes.
If the device nodes are configured to insert VLANs (native Q or native QinQ), additional room must be
left free for that in the ingress Ethernet frame.
Broadcast/Multicast control
The downstream broadcast can be controlled by explicitly disabling it from the UI. Disabling IPv6 over
the tunnel also reduces the downstream multicast traffic.
Limitations
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In bridge mode, the V5000 PoP node can forward 1.8 Gbps of TCP traffic and 2.0 Gbps of UDP
traffic in the down-link direction.
Layer 2 Bridge support in multi-PoP deployments
Note
Multi-PoP deployment is not recommended if on board E2E is enabled.
This feature applies to Layer 2 bridging and Deterministic Prefix Allocation (DPA) are configured to be
used in the network.
In the Terragraph network, CNs and DNs are allocated prefixes from a seed prefix. There are various ways
for allocating prefixes. In DPA, the controller assigns prefix zones to PoPs based on the network topology
to allow PoP nodes to take advantage of summarizing the route and helps in load balancing ingress
traffic.
Содержание cnWave
Страница 1: ...USER GUIDE 60 GHz cnWave System Release 1 2 2 ...
Страница 56: ...System Hardware 56 Figure 37 10 GbE PoE C000000L141A ...
Страница 136: ...Installation 136 Figure 128 Connecting the power injector to ODU drop cable ...
Страница 205: ...Operation 205 SNR graph Figure 219 SNR graph MCS Index graph Figure 220 MCS Index graph ...