Index

 A  B  C  D  E  F  H  I  L  M  N  P  Q  R  S  T  U  V  W

 

A

access modules    
ES2 4G LMs as    
in an LNS device, stateful switchover
access modules in the LNS    
receipt of event from an application    
access module processes PPP echo requests
failure with the primary module
Access-Request messages    
ICR Partition ID VSA
Acct-Start messages    
ICR Partition ID VSA
Acct-Stop messages    
ICR Partition ID VSA
activating guidelines    
high availability, line modules    
mirroring configuration files from active to standby
reverting to default redundancy mode
same software release on primary and secondary modules
active    
high availability state
active, line module high availability state    
change in previously matching criterion    
transition to disabled state
mirroring of information    
relevant applications create and post transactions
standby module replays updates and performs changes for applications
updates in settings sent to standby module
synchronization of data    
from active to standby module
unsupported application configured    
transition to disabled state
when a switchover occurs    
warm restart of standby module
application support    
high availability
Automatic Reversion    
enabling
automatic switchover    1
limitations
Automatic Switchover    
disabling
 

B

backup router    12
defined
election process and    12
VRRP
 

C

call setup rate    
data synchronization    
impact on
under peak load conditions    
time for system to become HA-active
clear redundancy commands    
clear redundancy history
cold boot    
of secondary line module    
when slot is disabled
when slot is reloaded
when software fault occurs
commands for configuring    
stateful SRP switchover    
similarity with commands for stateful line module switchover
connection manager    
usage of stream ID    
to identify connections
conventions    
notice icons
text and syntax
customer support    1
contacting JTAC
 

D

data synchronization    
call setup rate impact    
consumption of backplane bandwidth
deactivating    
high availability, line modules
deactivating guidelines    
high availability, line modules
redundancy mode of line modules    
disruption in user sessions, forwarding data
reloading interfaces, routing tables from SRP
destination address (DA), VRRP
DHCP proxy client bindings    
mirroring of data    
synchronization between primary and standby SRP modules
preservation of    
across a stateful SRP switchover
direct memory access (DMA)    
receipt of packets for forwarding controller    
by interface controller
receipt of packets for system controller    
by interface controller
disable-switch-on-error command
disabled    
high availability state
disabled, line module high availability state    
cold-restart of the router    
when switchover occurs
retention in the same state    
requirements not met
router uses redundancy mode
disabled,, line module high availability state    
criteria to move to initializing state    
active module support for high availability
high availability mode configured
releases on standby and active modules are same
standby module is online, mirroring enabled
standby module support for high availability
documentation set    
comments on
double fault window    
scenarios that occur    
stateful line module switchover after stateful SRP switchover is completed
stateful SRP switchover after line module high availability is completed
stateful SRP switchover before enabling line module high availability
simultaneous switchovers of    
line module and SRP module
system behavior during
downlink modules    
ES2 4G LMs as    
in an LNS device, stateful switchover
drop events    
on egress queues    
not preserving across stateful switchover of LMs
drop rates    
on egress queues    
not preserving across stateful switchover of LMs
 

E

egress queues    
drop events on    
stateful switchover of LMs
drop rates on    
stateful switchover of LMs
forwarding events on    
stateful switchover of LMs
forwarding rates on    
stateful switchover of LMs
ES2 4G line modules    
as access modules    
in an LNS device for stateful switchover
as downlink modules    
in an LNS device for stateful switchover
ES2 4G LMs    
installed with Service IOA    
support for stateful line module switchover
 

F

failover.     See switchover    
file system synchronization mode    
redundancy mode
forwarding controller    
receives packets from interface controller    
using direct memory access
tables that point to failed modules    
updated with stream IDs to new primary
transfer of packets from the interface controller    
not preserved during stateful line module switchover
transfer of packets to the system controller    
not preserved during stateful line module switchover
usage of stream ID    
to identify connections from a specific slot
forwarding controller database    
mapping of the slot ID, stream ID, and traffic class
forwarding events    
on egress queues    
not preserving across stateful switchover of LMs
forwarding rates    
on egress queues    
not preserving across stateful switchover of LMs
 

H

hardware    
monitoring information    12
high availability    
activating    12
activating guidelines
deactivating    12
IP interface priority    12
overview
preservation of DHCP proxy client bindings
high availability mode    
redundancy mode
high availability mode, line modules    
brief pause in data forwarding    
when secondary module becomes primary
initial bulk transfer of data    
to newly assigned primary module
no impact on existing user sessions
synchronization of state and dynamic configuration    
between primary and secondary LMs
transaction-based mirroring subsequently    
to newly assigned primary module
high availability pair    
of line modules    
unified ISSU disabled on the secondary
unified ISSU support on the primary
high availability, line module     See stateful line module switchover    
high availability, line modules    
activating    
launching Redundancy Configuration mode
specifying slots of primary and secondary modules
activating guidelines
deactivating
deactivating guidelines
error message displayed    
when maximum limit is exceeded for pairs configured
maximum pairs that can be configured
 

I

icr cluster
ICR commands    
interface
icr interface
ICR Options    
icr-control-interface
priority command
timers-learn command
ICR Partition    
configuring    12345
configuring, naming
radius
ICR partition accounting    
and dependence on Acct-Stop messages
configuring
disabling and enabling messages    
sent to the RADIUS server
overview
processing in different scenarios    
administrative switchover
complete chassis failure
line module or interface failure
transition of ICR partition states
ICR Partition commands    
naming
ICR partition ID VSA    
including in access and accounting messages
ICR Partition ID VSA    
transmitting to the virtual router    
where ICR control interface is configured
where ICR partition is configured
ICR Partition Options    
advertise-mac    12
control-interface    12
group option    12
use-default-mac    12
ICR Partitions    
configuration example    
backup ICR partition, S-VLAN based grouping
master ICR partition, S-VLAN based grouping
ICR RADIUS commands    
inclusion of icr-partition-id
radius icr-partition-accounting
icr-partition
in-service software upgrade.     See unified ISSU    
initializing    
high availability state
initializing, line module high availability state    
completion of operation    
transition to active state
criteria not met or previously matching criteria not complied    
shifts to disabled state
events that occur    
bulk synchronization of memory
mirroring of state and dynamic configuration
presence of unsupported application    
shifts to disabled state
when a switchover occurs    
system cold-restarts
Interchassis Redundancy    
heterogeneous icr clusters
icr clusters
icr partition
interface controller    
forwards packets to system controller    
using direct memory access
using Ethernet channel
operational image that runs on    
and stateful line module switchover
receives packets destined for forwarding controller    
using Ethernet channel
receives packets destined for system controller    
using direct memory access
Interim-Acct messages    
ICR Partition ID VSA
IOA slots    
and SRP module combination    
compatible with stateful line module switchover
IP addresses    
IP address owner, VRRP
primary, VRRP
VRRP    12
ip commands    1,  See also vrrp commands    
ip address
ip vrrp
ip vrrp accept-data
ip vrrp advertise-interval
ip vrrp authentication-key
ip vrrp authentication-type
ip vrrp enable    12
ip vrrp preempt
ip vrrp priority    12
ip vrrp track
ip vrrp virtual-address    12
ip pim commands    
ip pm dr-priority
ISSU.     See unified ISSU    
 

L

L2TP    
after switchover to the secondary module occurs    
restores operation data to the new primary
configuration and operation data    
maintained in the line module
mirrored to the standby module
on the SRP module    
handles line module events
restoration of configuration to the new primary    
similarity with warm start during unified ISSU
L2TP tunnels    
data packets received on    
preventing requests from LAC devices for sequence numbering
sequence number checking for
LEDs    
monitoring status
line module high availability     See stateful line module switchover    
line module high availability states    
active
disabled
initializing
line module redundancy    
configuring
managing
modules enabled for    
cannot be configured in a high availability pair
overview
requirements    
E120 and E320 Routers
ERX7xx models and ERX14xx Models
line modules    
applications that support    
stateful switchover
behavior of system functions    
with stateful switchover configured
cold switchover of    
loss of existing subscriber sessions
same behavior as line module redundancy
on E120 and E320 routers, components    
forwarding controller
input/output adapter
interface controller
replacing    
when stateful switchover is enabled
stateful switchover of    
active or primary module
packet processing by the router
standby or secondary module
warm switchover of    
preservation of subscriber sessions
with downlink interface to the LAC, reloading    
not retaining user sessions during stateful switchover
not retaining user sessions with line module redundancy
LNS devices    
ES2 4G LMs as access modules    
and stateful line module switchover
ES2 4G LMs as downlink modules    
and stateful line module switchover
LNS sessions    
stateful switchover of    
for routers that act as LNS devices
supported module and IOA combinations
log messages    
generated for stateful line module switchover    
in response to manual settings
in response to system events
stateful line module switchover    
transition between switchover states    12
transition from active to disabled state
transition from disabled to active state
when HA is enabled
stateful SRP switchover    
transition from pending to active state
when HA is enabled    123
 

M

manuals    
comments on
master router
Module Redundancy    
switching example    
primary Line Module, Spare Line Module
modules    
monitoring information    12
 

N

notice icons
 

P

pending    
high availability state
performance impact    
maximum tunneled PPP sessions    
on the primary line module
platform considerations    
high availability
stateful line module switchover
policy application    
downloading policy attachments    
using the SRP module
in the line module    
policy definitions not stored in
transmission of policy attachments from SRP to LM    
in a bulk manner
policy attachments    
transfer in a bulk operation    
from SRP to line module
reduced time for download
policy manager    
stateful line module switchover safe    
download of policy attachments
preservation of statistics after switchover
policy statistics    
preserved across line module switchover    
green bytes and packets
red bytes and packets
saturated bytes and packets
transmit-unconditional bytes and packets
upper green bytes and packets
upper red bytes and packets
upper yellow bytes and packets
yellow bytes and packets
PPP accounting statistics    
preserved across line module switchover    
Acct-Input-Octets RADIUS attribute
Acct-Input-Packets RADIUS attribute
Acct-Output-Octets RADIUS attribute
Acct-Output-Packets RADIUS attribute
IPv6-Acct-Input-Octets RADIUS attribute
IPv6-Acct-Input-Packets RADIUS attribute
IPv6-Acct-Output-Octets RADIUS attribute
IPv6-Acct-Output-Packets RADIUS attribute
PPP application    
after stateful line module switchover    
replication of sessions on standby module
components on the line module    
basic protocol
state machines in a running state
timers
echo requests for sessions on ES2 4G LM    
handled by access module
echo requests for sessions on failed module    
redirection to a different hardware
expiry of keepalives    
time for the new primary to become active
mirrored storage data    
reconstruction of
sessions alternating between up and down states    
not retained during switchover
time for standby module to become active    
dependent on configuration settings
PPP echo reply messages    
sent from access modules in LNS    
in response to echo requests from clients
PPP echo requests    
handling by access module in LNS    
during stateful switchover
stoppage of handling by access module in LNS    
after stateful switchover is complete
PPP subscriber sessions    
on an LNS device in L2TP tunnels    
echo requests handled by access module
terminated due to lack of keepalive responses
primary line module    
actions that trigger stateful switchover    
disabling the slot
graceful switchover to secondary module
reloading the slot
collection of statistics from    
for policy manager
for PPP applications
disabling the slot
disabling the slot of    
secondary module becomes the primary
erasing the slot of    
primary and secondary modules are cold booted
failure of    
retaining active user sessions
running of diagnostic functions
stateful switchover to secondary module
subscriber disconnection for two minutes
performance impact, stateful switchover    
maximum tunneled PPP sessions
reloading the slot of    
secondary module becomes the primary
software fault occurs on    
secondary module becomes the primary
timeout value    
to reach the online state after router reboot
 

Q

QoS    
agent clients bind and register    
to the QoS agent
configuration stored in line modules
settings mirrored to standby module
stateful line module switchover support    
restoration of queues on subscriber interfaces
queue manager    
agent running on line modules    
handling of forwarding controller updates
agents reside on line modules
initiation of requests to the connection manager    
on reception of the controller up event
resides on the SRP
usage of queue ID    
to identify connections
 

R

RADIUS
rebooting of the router    
stateful line module switchover configured    
primary module reaches online state
secondary module is not an online state
timeout for primary module to become online
recovery of routers    
from double failures    
not supported
redundancy    
line module.     See line module redundancy    
SRP module.     See SRP module redundancy    
redundancy commands    
redundancy force-switchover    123
redundancy lockout
redundancy revert
redundancy revertive
srp switch
redundancy modes    
high availability
redundancy modes, line modules    
high availability
stateless switchover
removal of IOAs    
without powering down    
stateful line module switchover not triggered
replacement of line modules    
stateful line module switchover enabled, action taken for failures    
cold and warm switchovers of LMs in a HA pair
disabling the slots in which the LMs in a HA pair reside
reloading slot in which LMs in a HA pair reside
reloading the primary line module
reloading the secondary line module
removing IOAs from LMs in a HA pair without powering down
without erasing the interface settings
resetting of subscriber sessions    
with stateful line module switchover disabled, dependency on    
configuration parameters applied
number of active user sessions
router models in network
 

S

secondary line module    
disabling the slot
disabling the slot of    
cold boot is performed
erasing the slot of    
line module high availability is disabled
mirroring of    
subscriber details from failed primary
performance impact, stateful switchover    
newly provisioned
preservation of active sessions    
after a stateful switchover
reloading the slot of    
cold boot is performed
software fault occurs on    
cold boot is performed
taking over as    
primary after stateful switchover
taking over as primary, timeout exceeded for primary    
after system reboot
taking over as the primary    
recovery of applications to a stable state
sequence number checking    
for packets on L2TP tunnels    
not maintained during stateful switchover of LMs
setting recommendation for stateful switchover of LMs
Service Availability    
Features
ICR
Module redundancy
Stateful Line Module Switchover
Stateful SRP Switchover
Unified ISSU
VRRP
show icr commands    
show icr-partition
show icr-partitions
state
summary
show ip commands    
show ip vrrp    12
show ip vrrp brief    12
show ip vrrp neighbor
show ip vrrp neighbors
show ip vrrp statistics    1234
show ip vrrp statistics global    123
show ip vrrp summary    12
show ip vrrp tracked-objects    12
show issu commands    
show issu
show issu brief
show issu detail
show redundancy commands    
show environment    12
show hardware    12
show redundancy
show redundancy clients
show redundancy clients all
show redundancy detail
show redundancy history
show redundancy history detail
show redundancy history line-card slot
show redundancy history line-card slot detail
show redundancy line-card
show redundancy line-card slot
show redundancy srp
show redundancy srp detail
show redundancy switchover-history
simultaneous switchover of    
SRP and line modules    
not supported
SRP module redundancy    1
managing
SRP modules    
installing a redundant module
paired with IOAs    
support for stateful line module switchover
reset button
simultaneous switchover with line modules    
not supported
stateful line module switchover    
1:1 redundancy model
access modules in an LNS device
actions that trigger    
disabling the slot of the primary module
graceful switchover to secondary module
rebooting the slot of the primary module
activating
activating guidelines
active module, primary
advantages of functionality    
1:1 redundancy model
seamless preservation of subscriber sessions
and line module redundancy    
cannot be enabled simultaneously
and stateful SRP switchover    
configured and active on the same router
applications that do not support
applications that support    
connection manager
forwarding controller
interchassis control protocol
L2TP
mirroring subsystem
policy manager
PPP
QoS
unified ISSU
available on the operational image    
that runs on the interface controller
behavior of system functions    
configured and disabled on LMs
configured and enabled on LMs
interoperation with line module redundancy
interworking with stateful SRP switchover
LM is in active or disabled switchover state
when the router is rebooting
when unified ISSU is performed
benefits of    
enhanced reliability and resiliency
preservation of active client sessions
recovery of applications to a stable state
undisrupted forwarding of data
deactivating
deactivating guidelines
differences in keywords of commands    
with stateful SRP switchover
disabled    
forcible termination of user sessions
downlink modules in an LNS device
enabled on the router    
retaining existing client connections
synchronization of applications to a stable state
uninterrupted forwarding on interfaces
for LNS sessions    
active and standby Service IOAs supported
compatible SRP and SFM models
downlink and uplink LMs in an L2TP tunnel
L2TP tunnels and sessions supported
with the router as an LNS in an L2TP tunnel
forwarding controller tables    
updated with stream IDs to new primary
guidelines for configuring
historical record of, not preserving    
drop events on egress queues
drop rates on egress queues
forwarding events on egress queues
forwarding rates on egress queues
hot-swap of the IOA    
in a managed environment
improving router availability
independent of stateful SRP switchover
interworking with unified ISSU    
not supported on the secondary line module
supported on the primary line module
log messages    
transition from active to disabled state
transition from disabled to active state
log messages generated during    
in response to manual settings
in response to system events
maximum pairs that can be configured
modules enabled for    
cannot be configured in a redundancy group
mutually exclusive of    
line module redundancy
non-support of    
1:N hot standby mode
automatic switchover of serial connection
not preserving packets flowing    
between forwarding and interface controllers
between forwarding and system controllers
overview
performance impact    
insertion of new secondary module
maximum PPP sessions on primary module
primary line module    
continuation of data forwarding after failure of
failure of
mirroring of user sessions
scenarios of configuration
secondary line module    
mirroring of subscriber sessions from primary
not preserving fluctuating sessions
taking over as primary
sequence number checking    
for data packets on L2TP tunnels
similarity in configuration commands    
with stateful SRP switchover
spare or standby module, secondary
supported line module, IOA combination
supported LM and IOA combinations    
for stateful switchover of LNS sessions
system operations when enabled on the router
unavailable for setting up    
forcible termination of user sessions
using status LEDs for monitoring    
states of line modules
viewing    
detailed history information for line module in a slot
information about starts and switchovers for line module in a slot
redundancy setting of line module in a slot
stateful line module switchover commands    
line-card switch
line-card switchmode high-availability slot
stateful line module switchover, scenarios    
not supported in software releases    
restart of line modules
setting disabled on the router    
disconnection of user sessions
excessive time for rebuilding user sessions
reestablishment of client connections
restart of line modules
stateful SRP switchover    
configuration independent of    
stateful line module switchover
differences in keywords of commands    
with stateful line module switchover
disruption of connection between ICs    
reestablishment of ICC sessions
switch relearns MAC addresses
does not prevent root cause of reload or restart    
similarity in behavior with stateful line module switchover
log messages    
transition from pending to active state
similarity in configuration commands    
with stateful line module switchover
simultaneously performed with    
stateful line module switchover, double fault
stateful SRP switchover.,  See also high availability    
stateless switchover mode, line modules    
default behavior for redundant LMs
system events that occur
temporary halt in working of I/O modules
states    
high availability
statistics    
for policy manager    
collection frequency from primary module
polling and sending to secondary line module
for PPP applications    
collection frequency from primary module
polling and sending to secondary line module
last collected value used as baseline    
on the primary line module
status LEDs    
monitoring redundancy state of SRP and line modules    
OK LED
ONLINE LED
REDUNDANT LED
status LEDs, monitoring
subscriber sessions    
preservation of active    
during stateful line module switchover
support, technical     See technical support    
switchover    1
stateless
 

T

technical support    
contacting JTAC
text and syntax conventions
transmission of packets    
between forwarding and interface controllers    
not preserved during stateful line module switchover
between forwarding and system controllers    
not preserved during stateful line module switchover
 

U

unified ISSU    
disabled on the secondary module    
in a high availability pair
support on primary module    
in a high availability pair
unified ISSU (in-service software upgrade)    1
AAA support
application support
ATM support    1
ATM port date rate
ILMI sessions
OAM CC effects
OAM VC integrity
VC and VP statistics
BGP IPv6 support
DHCP support    1
common component
external server
packet capture
relay and relay proxy
DHCP support:relay and relay proxy
DoS protection support
Ethernet support    1
ARP entries
LAG
port data rate
VLAN statistics
FTP support
halting during initialization
halting during upgrade
initialization phase    1
application data on standby SRP module
line module arming
SNMP traps
interoperation with    
stateful line module switchover
IPv6
IS-IS support    1
graceful restart
high link cost
IS-ISv6 support    1
graceful restart
high link cost
L2TP support    1234
fast path processing
IGP graceful restart
OSPF interface cost
subscriber termination    12
layer 3 protocol traffic forwarding
OSPF support    1
dead interval
graceful restart
high link cost
overview
phases    
initialization
overview of
service restoration
upgrade
PIM support
platform
procedure for upgrade
references
requirements    
hardware    12
software
traffic forwarding
verification in upgrade phase
restoring original router state    12
router behavior
service restoration phase    12
SONET/SDH support
subscriber support    1
logins
statistics
support, application
T3 support
TACACS+ support
terms
timer settings for routing protocol timers
upgrade phase    12
exceptions
line module control plane
line module forwarding plane upgrade
process steps
setup
SRP module switchover
verification requirements
upgrade procedure
unified ISSU (in-service software upgrade):DHCP support    
local server
upgrading software    
high availability
 

V

virtual MAC address
virtual router ID (VRID).     See VRID    
Virtual Router Redundancy Protocol (VRRP).     See VRRP    
VRID (virtual router ID)    
configuration
creating    12
router election rules    12
vrrp    
platform
VRRP
VRRP (Virtual Router Redundancy Protocol)    
advertisement interval
advertisement messages
authentication key
authentication type
backup router    12345
configuration examples    123
configuring
how it works
implementation    12
MAC address
master router
monitoring    1234
overview
preemption    12
router election rules    12
router priority
VLAN support
VRRP router defined
vrrp commands    
ip vrrp
ip vrrp accept-data
ip vrrp advertise-interval
ip vrrp authentication-key
ip vrrp authentication-type
ip vrrp enable    12
ip vrrp preempt    12
ip vrrp priority
ip vrrp track
ip vrrp virtual-address
VRRP commands    
icr
 

W

warm restart    
IP interface priority    12
preservation of DHCP proxy client bindings
warm restart, line modules    
events that occur    
denial of new user session login attempts
preservation of active user sessions
preservation of data forwarding through chassis
prevention of configuration changes