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Cirius LM User Manual 2016
Page 63
4. Ethernet Features Overview
The platform includes a multi-port Layer 2 Ethernet switch providing interconnect
between the four front panel ports, the local (IDU internal) CPU port and the radio
port. The switch is capable of providing normal, unrestricted address learning and
frame forwarding functions between these six ports. The switch is also configurable
via the IDU user interface (see Section 2.1.7) to provide the following enhanced
functionality:
•
VLAN-based security restricts the forwarding of frames between the
management and transport ports, protecting the near and far-side CPUs and
management Ethernet ports from unauthorized access via the transport
ports.
•
Port-based QoS Priority provides for setting the priority of each port,
determining the QoS level assigned to all frames entering that port.
Port-
based rate limiting allows the assignment of a maximum ingress bit rate
allowed for each port.
•
Ethernet flow control for managing data overflows in the network by halting
transmissions for specified periods of time. A more detailed discussion of
each of these features is given below.
4.1. VLAN-based Security Features
The platform includes VLAN-based security features designed to protect the near
and far-side CPUs and management Ethernet ports from unauthorized access via
the transport ports. The design is depicted in Figure 38. When VLAN Security is
enabled, Ethernet frames ingressing into either of the two transport (User) ports at
each IDU are allowed to egress from only the corresponding transport port at the
far-side IDU(e.g., frames ingressing into P1 at the near-side egress only from P1
on the far side). Frames ingressing from either of the transport ports are not
allowed to egress to the local switch’s CPU port or management ports, nor to the
far-side switch’s CPU or management ports. Ethernet frames ingressing from
either of the management ports are allowed to egress to the other local
management port, the local CPU port, the far-side management ports, or the far
side CPU port, as determined by the switches’ address lookup and forwarding
functions. Frames ingressing from either of the management ports are not allowed
to egress the local or far-side transport ports.
This VLAN Security feature operates by adding a VLAN tag to all ingressed frames
for internal processing within the Ethernet switches. The VLAN security feature can
accommodate traffic traversing the link that is already VLAN tagged. VLAN-tagged
frames that ingress to the switch will be double
Содержание SM Cirius LM
Страница 21: ...Cirius LM User Manual 2016 Page 21 Figure 11 Web GUI Login Page ...
Страница 27: ...Cirius LM User Manual 2016 Page 27 Figure 14 Web GUI Modem Tab ...
Страница 29: ...Cirius LM User Manual 2016 Page 29 Figure 15 Web GUI Link Quality Tab ...
Страница 31: ...Cirius LM User Manual 2016 Page 31 Figure 16 Web GUI Telco Lines Tab shown T E4 ...
Страница 33: ...Cirius LM User Manual 2016 Page 33 Figure 17 Web GUI Ethernet Tab ...
Страница 35: ...Cirius LM User Manual 2016 Page 35 Figure 18 Web GUI ODU Tab ...
Страница 38: ...Cirius LM User Manual 2016 Page 38 Figure 20 Web GUI Event Log Tab ...
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