NSG 9000-6G - Harmonic Inc

Chapter 3 Configuring Platform Parameters
Input GbE Ports Configuration
4. In the IP Addresses table, enter the following parameters:
IP Address1 - type in the required IP address
Subnet - type in the required subnet mask.
3.10.2 Configuring Input GbE Port Redundancy
3.10.2.1 Overview
NSG 9000-6G supports 1:1 and N:1 redundancy modes for its GbE input ports. Typical port
redundancy configuration depends on the application in which the NSG is deployed as the
following scenarios describe:
• VOD application - to allow redundancy for IP unicast VOD streams, you should use 1:1
port redundancy. Select a distinct backup port for each primary port, with the Same IP
Address option checked.
• Broadcast application - to allow redundancy for IP multicast streams, you should use 1:1
port redundancy.
• SDV application - to allow redundancy for IP multicast SDV streams, use either 1:1 or N:1
redundancy modes depending on the desired level of protection:
1:1 port redundancy - define for each primary port a backup port. De-select the Same
IP Address option, and set a distinct IP address for the designated backup port. This
mode ensures the highest level of protection against various network failures.
N:1 port redundancy - allows an efficient use of the eight available input GbE ports,
by utilizing a single backup port for protecting several primary ports. The typical and
recommended configuration for this mode is to define two groups of 3 primary ports
and one backup port. For example, port 4 backs up ports 1-3 and port 8 backs up
ports 5-7. In case of a redundancy switch, the backup port starts transmitting also the
streams of the failed primary port(s).
In general, the following guidelines apply for the port redundancy feature:
• To configure port redundancy, port should be enabled. (Select GbE Port > General tab)
• A primary port cannot serve as a backup port.
• If the Same IP Address option is selected, the backup port is disabled and the IP address of
the port changes to the IP address of the primary port. When the primary port fails, the
backup port is enabled, using the same IP address of the failed port.
• Configuring port redundancy, blocks the port configuration except for IP address in case
Same IP Address is selected.
• Alarm configuration:
By default both Link Down and No Input Traffic alarms trigger port redundancy.
The alarm configuration of the primary port and backup port is the same.
You can configure the alarms of a primary port only.
When selecting a backup Port, the alarm configuration of the primary port also
applies to the backup port.
In N:1 port redundancy, the alarm configuration applies to the backup port and to all
of the primary ports it backs up. Once you configure the backup port to backup an
additional primary port, the alarm configuration automatically applies to the primary
port.
Any changes to the alarm configuration immediately applies to the backup port and
to all primary ports it backs up.
© 2012 Harmonic Inc. 37 NSG 9000-6G, Version 2.7, Rev B