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NOTE: On channelized STM1 interfaces, you should configure the clock source at
one side of the connection to be internal (the default JUNOS Software configuration)
and configure the other side of the connection to be external.
To configure loop timing on an interface, include the
the
To explicitly configure line timing on an interface, include the
statement at the
Configuring Receive and Transmit Leaky Bucket Properties on SONET/SDH
Interfaces
Congestion control is particularly difficult in high-speed networks with high volumes
of traffic. When congestion occurs in such a network, it is usually too late to react.
You can avoid congestion by regulating the flow of packets into your network.
Smoother flows prevent bursts of packets from arriving at (or being transmitted from)
the same interface and causing congestion.
For all interface types except ATM, Fast Ethernet, Gigabit Ethernet, and channelized
IQ and IQE, you can configure leaky bucket properties, which allow you to limit the
amount of traffic received on and transmitted by a particular interface. You effectively
specify what percentage of the interface s total capacity can be used to receive or
transmit packets. You might want to set leaky bucket properties to limit the traffic
flow from a link that is known to transmit high volumes of traffic.
NOTE: Instead of configuring leaky bucket properties, you can limit traffic flow by
configuring policers. Policers work on all interfaces. For more information, see the
JUNOS Policy Framework Configuration Guide.
The leaky bucket is used at the host-network interface to allow packets into the
network at a constant rate. Packets might be generated in a bursty manner, but after
they pass through the leaky bucket, they enter the network evenly spaced. In some
cases, you might want to allow short bursts of packets to enter the network without
smoothing them out. By controlling the number of packets that can accumulate in
the bucket, the
packets entering the network in
By default, leaky buckets are disabled and the interface can receive and transmit
packets at the maximum line rate.
For each DS3 channel on a channelized OC12 interface, you can configure unique
receive and transmit buckets.
[edit interfaces interface-name]
[edit interfaces interface-name]
clocking external;
[edit interfaces interface-name]
[edit interfaces interface-name]
clocking internal;
property controls burstiness. The maximum number of
threshold
Configuring Receive and Transmit Leaky Bucket Properties on SONET/SDH Interfaces
Chapter 61: Configuring SONET/SDH Interfaces
clocking external
hierarchy level:
hierarchy level:
t
time units is
threshold + rate * t
statement at
clocking internal
.
931
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