Switches - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Complete Software Guide for Junos
Table 270: Junos OS Layer 3 Protocol Statements and Features That Are Not
Supported (continued)
Feature
General routing options in the
hierarchy:
routing-options
MPLS and
label-switched-paths
Traffic sampling and
fowarding in the
hierarchy
forwarding-options
Related
Documentation
Understanding Distributed Periodic Packet Management on EX Series Switches
1904
®
OS for EX Series Ethernet Switches, Release 10.4
Configuration Statements Not Supported on EX Series Switches
and subordinate statements
auto-export
and subordinate statements
dynamic-tunnels
lsp-next-hop and subordinate statements
multicast and subordinate statements
and subordinate statements
p2mp-lsp-next-hop
statement
route-distinguisher-id
accounting and subordinate statements
and
family mpls family multiservice
Under
monitoring group-name family inet output
statement
cflowd
export-format-cflowd-version-5
flow-active-timeout
flow-export-destination
flow-inactive-timeout
statement
interface
port-mirroring statement (On EX Series switches, port mirroring is implemented using the
analyzer statement.)
and subordinate statements
sampling
Layer 3 Protocols Supported on EX Series Switches on page 17
EX Series Switch Software Features Overview on page 3
Periodic packet management (PPM) is responsible for processing a variety of
time-sensitive periodic tasks for particular processes so that other processes on the
Juniper Networks EX Series Ethernet Switch can more optimally direct their resources.
PPM is responsible for the periodic transmission of packets on behalf of its various client
processes, which include the processes that control the Link Aggregation Control Protocol
(LACP) and Bidirectional Forwarding Detection (BFD) protocols, and also for receiving
packets on behalf of these client processes. PPM also gathers some statistics and sends
process-specific packets. PPM cannot be disabled and is always running on any
operational switch.
The responsibility for PPM processing on the switch is distributed between the Routing
Engine and either the access interfaces (on EX3200 and EX4200 switches) or the line
cards (on EX8200 switches) for all protocols that use PPM by default. This distributed
model provides a faster response time for protocols that use PPM than the response
time provided by the nondistributed model.
If distributed PPM is disabled, the PPM process runs on the Routing Engine only.
under hierarchy
hash-key
hierarchy:
statement
statement
statement
statement
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