Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - SERVICE AVAILABILITY CONFIGURATION GUIDE 2010-10-08 Configuration Manual page 215

line module redundancy
configuring.........................................................................13
managing...........................................................................13
modules enabled for
cannot be configured in a high availability
pair...........................................................................71
overview...............................................................................9
requirements
E120 and E320 Routers.......................................10
ERX7xx models and ERX14xx Models...........10
line modules
applications that support
stateful switchover...............................................79
behavior of system functions
with stateful switchover configured...............75
cold switchover of
loss of existign subscriber sessions...............78
same behavior as line module
redundancy.........................................................78
on E120 and E320 routers, components
forwarding controller............................................74
input/output adapter...........................................74
interface controller................................................74
replacing
when stateful switchover is enabled..............77
stateful switchover of
active or primary module...................................68
packet processing by the router.......................74
standby or secondary module.........................68
warm switchover of
preservation of subscriber sessions...............78
with downlink interface to the LAC, reloading
not retaining user sessions during stateful
switchover.............................................................71
not retaining user sessions with line
module redundancy..........................................71
LNS devices
ES2 4G LMs as access modules
and stateful line module switchover..............72
ES2 4G LMs as downlink modules
and stateful line module switchover..............72
LNS sessions
stateful switchover of
for routers that act as LNS devices................70
supported module and IOA
combinations.....................................................70
Copyright © 2010, Juniper Networks, Inc.
log messages
generated for stateful line module switchover
in response to manual settings.......................68
in response to system events...........................68
stateful line module switchover
transition between switchover
states..............................................................90, 91
transition from active to disabled
state........................................................................91
transition from disabled to active
state........................................................................91
when HA is enabled.............................................93
stateful SRP switchover
transition from pending to active
state.......................................................................92
when HA is enabled......................................92, 93
M
manuals
comments on..................................................................xxi
master router...........................................................................151
Module Redundancy
switching example
primary Line Module, Spare Line
Module...................................................................14
modules
monitoring information.........................................27, 28
N
notice icons...............................................................................xix
P
pending
high availability state.....................................................41
performance impact
maximum tunneled PPP sessions
on the primary line module................................72
platform considerations
high availability...............................................................36
stateful line module switchover...............................70
policy application
downloading policy attachments
using the SRP module.........................................79
in the line module
policy definitions not stored in.........................79
transmission of policy attachments from SRP
to LM
in a bulk manner....................................................79
Index
193