Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X User Manual

router1(config)#hostname host1
host1(config)#
■ There is no no version.
■ See hostname.
Configuring the Switch Fabric Bandwidth
By default, the switch fabric for the Juniper Networks ERX1440, ERX310, E120, and
E320 routers uses a bandwidth weighting ratio of 15:2 for multicast-to-unicast
weighted round robin (WRR). In the absence of strict-priority traffic, and when both
unicast and multicast traffic compete for switch fabric bandwidth, the switch fabric
allocates 15/17ths of the available bandwidth to multicast traffic and 2/17ths of the
available bandwidth to unicast traffic.
The fabric weights command enables you to specify a ratio for multicast-to-unicast
traffic on the router switch fabric. The no version of the command reverts the
weighting ratio back to its default.
fabric weights
■ Use to define the multicast-to-unicast traffic ratio for the switch fabric for the
ERX1440, ERX310, E120, and E320 routers
■ Example
host1(config-traffic-class)# fabric weights multicast 2 unicast 1
■ Use the no version to return the switch fabric to its default multicast-to-unicast
ratio (15:2).
■ See fabric weights.
Configuring Timing
You can use the timing source command to configure three timing sources for the
system. These sources are known as the primary, secondary, and tertiary sources.
The system periodically polls the status of the current timing source. If the system
discovers that the current source has become unavailable, it polls the timing source
you specified as next in line. If this source is available, it switches to this source; if
not, it then polls the next source in line. If the lowest source is unavailable, the system
maintains the SRP clock as the source.
If you enable auto-upgrade, in the event of a source failure, the system—after
switching to a lower source—polls all higher configured sources and automatically
switches back to the highest timing source when that source becomes available.
The timing select command enables you to specify which source (primary, secondary,
or tertiary) the system is to use by default. The system will never attempt to upgrade
to a source higher than the selected source.
timing disable-auto-upgrade
Configuring the Switch Fabric Bandwidth ■ 253
Chapter 5: Managing the System

Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Specifications

General

Brand	Juniper
Model	SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X
Category	Software
Language	English