Enabling Passive Monitoring On Sonet/Sdh Interfaces; Removing Mpls Labels From Incoming Packets - Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual

Enabling Passive Monitoring on SONET/SDH Interfaces

The Monitoring Services I and Monitoring Services II PICs are designed to enable IP
services. If you have a Monitoring Services PIC and a SONET/SDH PIC installed in
an M160, M40e, or T Series router, you can monitor IPv4 traffic from another router.
On SONET/SDH interfaces, you enable packet flow monitoring by including the
passive-monitor-mode
You can include this statement at the following hierarchy levels:
If you include the
interface does not send keepalives or alarms, and does not participate actively on
the network.
On monitoring services interfaces, you enable packet flow monitoring by including
the
hierarchy level, specifying the
For conformity with cflowd record structure, you must include the
receive-options-packets
mo-fpc/pic/port unit logical-unit-number family inet]
For the monitoring services interface, you can configure multiservice physical interface
properties. For more information, see "Configuring Multiservice Physical Interface
Properties" on page 150 and the JUNOS Services Interfaces Configuration Guide.

Removing MPLS Labels from Incoming Packets

The JUNOS Software can forward only IPv4 packets to a Monitoring Services PIC.
IPv4 packets with MPLS labels cannot be forwarded to a Monitoring Services PIC.
By default, if packets with MPLS labels are forwarded to the Monitoring Services PIC,
they are discarded. To monitor packets with MPLS labels, you must remove the MPLS
labels as the packets arrive on the interface.
You can remove up to two MPLS labels from an incoming packet by including the
pop-all-labels
hierarchy level:
statement:
passive-monitor-mode;
[edit interfaces so-fpc/pic/port unit logical-unit-number]
[edit logical-systems logical-system-name interfaces so-fpc
logical-unit-number]
passive-monitor-mode
statement at the
family [edit interfaces mo-fpc/pic/port unit logical-unit-number]
[edit interfaces mo-fpc/pic/port unit logical-unit-number]
family inet;
and
[edit interfaces mo-fpc/pic/port unit logical-unit-number family inet]
receive-options-packets;
receive-ttl-exceeded;
statement at the
Chapter 61: Configuring SONET/SDH Interfaces
statement in the configuration, the SONET/SDH
option:
inet
receive-ttl-exceeded statements at the
hierarchy level:
[edit interfaces interface-name sonet-options mpls]
Enabling Passive Monitoring on SONET/SDH Interfaces
/ pic/port unit
[edit interfaces
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