Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual page 824

JUNOS 10.1 Network Interfaces Configuration Guide
Ensuring that Distributed ppm Is Not Disabled
By default, the router s period packet management process (
distributed to the Packet Forwarding Engine in addition to the Routing Engine. This
process is responsible for periodic transmission of packets on behalf of its various
client processes, such as Bidirectional Forwarding Detection (BFD), and it also receives
packets on behalf of client processes.
In addition,
processes as sending process-specific packets and gathering statistics. With
processes running distributed on both the Routing Engine and the Packet Forwarding
Engine, you can run such processes as BFD on the Packet Forwarding Engine.
Ethernet frame delay measurement requires that
Distributed ppm
Packet Forwarding Engine. If
Required for ETH-DM
of both routers, ETH-DM PDU frame timestamps and ETH-DM statistics are not valid.
Before you start ETH-DM, you must verify that the following configuration statement
is NOT present:
If distributed
router, you must re-enable it in order to use the ETH-DM feature.
Procedure to Ensure
that Distributed ppm is
Not Disabled
To ensure that distributed
1.
754
Ensuring that Distributed ppm Is Not Disabled
ppm handles time-sensitive periodic processing and performs such
[edit]
routing-options {
ppm {
no-delegate-processing;
}
}
ppm processing is disabled (as shown in the stanza above) on either
ppm
Display the packet processing management (PPM) configuration to determine
whether distributed
ppm
In the following example, distributed
case, you do not need to modify the router configuration:
[edit]
user@host# show routing-options
ppm;
In the following example, distributed
case, you must proceed to Step 2 to modify the router configuration:
[edit]
user@host show routing-options
ppm {
no-delegate-processing;
}
ppm
ppm is not distributed to the Packet Forwarding Engines
is not disabled on a router:
has been disabled.
ppm is enabled on the router. In this
ppm is disabled on the router. In this
) runs sessions
ppm
ppm
remains distributed to the