Cisco RF Gateway 1 Modules, Руководство по настройке

Страница: 59 / 286

GbE Interface Configuration
78-4025112-01 Rev H0 35
GbE Interface Configuration
GbE Interface Operation Modes
The RF Gateway 1 has four physical GbE input ports that receive video and data
streams from the upstream network. These ports may be used independently (four-
port independent mode) or configured to implement input redundancy (Dual port-
pair mode).
In software releases 02.02.11 or later, the RF Gateway 1 may be configured for the
four physical ports to operate independently. In this mode, no redundancy options
are available. Each port will retain its hard-coded MAC address in this mode.
Four-Port Independent Mode
In four-port independent mode, the RF Gateway 1 may be configured for the four
physical ports to operate independently. In this mode, no redundancy options are
available. Each port will retain its hard-coded MAC address in this mode. All the
four ports can belong to the same/different IP subnets.
The four-port independent mode supports redundancy for unicast streams if the
‘Ingress-All’ setting is enabled on the RFGW-1. If the Ingress-All is disabled then all
the configured sessions can receive traffic only on the designated input port.
The four-port independent mode does not support redundancy for multicast
streams. Multicast sessions can be configured to receive traffic on only one input
port.
Ingress-All operation for Unicast Streams in Four-Port Independent Mode
For unicast stream sessions, the input stream can be received on any of the four
input ports. The session will latch on to the input port on which the stream is
detected first. If a loss of input occurs on the port that is currently receiving the
stream, the session will automatically try to detect and switch to other ports where
the stream may be available. If none of the input ports are receiving the traffic, then
the stream will shut down until any of the ports start receiving traffic.
Source Specific Multicast Operation in Four-Port Independent Mode
When a multicast session is configured on the RFGW-1 with multiple source IP
addresses for the input stream, then the RFGW-1 will repeatedly try the sources in
the order they are specified (primary, secondary, tertiary and quaternary) until it
receives the input stream.
Dual Port-Pair Mode
In port-pair mode, the RF Gateway 1 is preconfigured to implement redundancy as
follows. The four input ports are configured to operate as two redundant port-pairs.