Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual page 761

placing a peer into loopback mode.............235
processing of OAM PDUs.................................235
settings for enabling and disabling remote
loopback
not stored across reboots...............................242
viewing configuration................................................248
warning message
while placing local entity in remote
loopback............................................................242
OAM messages
format of
Code field, usage.................................................226
Data/Pad field, usage.......................................226
Flags field, usage.................................................226
format of, figure...........................................................226
forwarding to the control block..............................229
higher priority over data traffic
during remote loopback...................................236
length of untagged frames......................................238
maximum transmission rate
performance impact..........................................237
processing by multiplexer.........................................229
processing by the packet parser............................229
processing during remote loopback
measuring link performance..........................236
properties of
determination of maximum frame
size.......................................................................226
rate of transmission per second...................226
size range...............................................................226
value of destination MAC address...............226
value of Ethertype..............................................226
value of frame payload....................................226
rules management of received
by the control block...........................................229
supported types
Event notification OAM PDUs........................226
Information OAM PDUs....................................226
Loopback control OAM PDUs........................226
Vendor-specific OAM PDUs...........................226
transmission of
control block and................................................229
transmission rate and
impact on router operations...........................227
with link-fault event bit in Flags field
higher preferential processing.......................234
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OAM PDU loss threshold
actions taken when exceeded
link problem signalled.......................................232
link transition to the down state...................232
configuring.....................................................................239
definition of
action taken when configured value is
exceeded.............................................................231
product of transmission rate and
equals lost-link timer.........................................232
recommendation for setting
for link-fault monitoring....................................237
viewing configured value..........................................250
OAM PDU transmission rate
configuring.....................................................................239
definition of
range for configuration......................................231
product of loss threshold and
equals lost-link timer.........................................232
viewing configured setting.......................................250
OAM PDUs See OAM messages
OAM remote failure monitoring See OAM remote
fault detection
OAM remote fault detection
action when link fault occurs
disabling interface..............................................234
failing over to secondary port........................234
conditions notified using
Flags field of Information OAM PDU...........234
example, configuring..................................................244
monitoring the receive link path
generation of Event notification
PDUs...................................................................234
types of failures monitored
critical event.........................................................234
dying gasp.............................................................234
link fault..................................................................234
OAM remote loopback settings
viewing............................................................................250
OAM session
changed to down, nonfunctional
after the action for high threshold excess
is taken...............................................................233
in down state with loss of OAM association
status in show command output.................232
OAM state machine
port in the down state
until discovery process completion..............231
Index
729