Monitoring High Availability

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Monitoring High Availability
This section shows how to use the show commands to view your high availability configuration and how to clear the high availability switchover history for the router.

High Availability show Commands

You can monitor various aspects of high availability using show commands. These aspects include redundancy modes and status, redundancy clients, historical information about redundancy on the router, and specific redundancy information for line modules and SRPs.

show redundancy

Use to display the supported redundancy modes and other status relating to high availability. In particular, the output indicates any conditions that are preventing high availability from operating.

Field descriptions

SRP

high-availability state—State of the high availability mode (disabled, active, or pending)

current redundancy mode—Redundancy mode currently being used by this router (high-availability or file-system-synchronization)

last activation type—Last type of activation that occurred on this router (that is, the method by which the SRP las booted [cold-start or warm-start])

Criteria Required for High Availability to be Active—criteria required for HA to be active.

NOTE: All criteria must be "yes" for High Availability to be active.

Line Card

automatic reverting—State of automatic reverting (on or off)

slot(s)—Slots in which the line modules reside

hardware role—Function of the line module: primary or spare

lockout config—Status of redundancy on this line module (protected—line module redundancy is enabled; locked out—line module redundancy is disabled)

backed up by slot—Slot that contains the line module that is a spare for this primary line module

sparing for slot—Slot that contains the primary line module for which this line module is a spare

revert at—Time at which you want line module to revert

midplane type—Identifier for the type of midplane

midplane rev—Hardware revision number of the redundancy midplane
Example 1
host1#show redundancy
SRP
---
high-availability state:  active
current redundancy mode:  high-availability
last activation type:     cold-switch
Line Card
---------
automatic reverting is off
                              backed
                                up     sparing
       hardware    lockout      by       for     revert
slot     role      config      slot     slot       at
----   --------   ---------   ------   -------   ------
 3       ---         ---       ---       ---      ---
 8      spare        ---       ---       ---      ---
 12    primary    protected    ---       ---      ---
         midplane   midplane
slots      type       rev
------   --------   --------
8 - 13      6          0
Example 2
host1#show redundancy detail
SRP
---
high-availability state:  active
current redundancy mode:  high-availability
last activation type:     cold-switch
Criteria Required for High Availability to be Active
   ----------------------------------------------------
                     criterion                         met
----------------------------------------------------   ---
Active SRP hardware supports High Availability?        Yes
High Availability mode configured?                     Yes
Mirroring Subsystem present?                           Yes
Network Core Dumps disabled?                           Yes
Running configuration is safe for High Availability?   Yes
Standby SRP hardware supports High Availability?       Yes
Standby SRP is online and capable of mirroring?        Yes
Standby SRP is running the same release?               Yes
Line Card
---------
automatic reverting is off
                              backed
                                up     sparing
       hardware    lockout      by       for     revert
slot     role      config      slot     slot       at
----   --------   ---------   ------   -------   ------
 3       ---         ---       ---       ---      ---
 8      spare        ---       ---       ---      ---
 12    primary    protected    ---       ---      ---
         midplane   midplane
slots      type       rev
------   --------   --------
8 - 13      6          0
show redundancy clients

Use to display high availability clients and their various levels of high availability support.

Specify an optional client type that you want to view (all, supported, unsafe, unsupported)

NOTE: Issuing this command without the optional client type results in showing only unsupported high availability clients (the default).

Field descriptions

client—High availability client

mode—Whether the client is supported or unsupported for high availability

configuration—Safety level of the configuration based on whether or not the client is supported or unsupported and, in the case of those unsupported, whether or not the client has been configured (for example, if an unsupported client is configured on a router with high availability enabled, the configuration would read "unsafe")
Example 1
host1#show redundancy clients
 Unsupported High Availability Clients
 -------------------------------------
       client           configuration
---------------------   -------------
Bridged Ethernet            safe
Transparent Bridging        safe
DHCP Proxy Client           safe
Flow Inspection             safe
frameRelay                  safe
Global Ipv6                 safe
IPsec Transport (ITM)       safe
l2tpDialoutGenerator        safe
l2tp                        safe
DHCPv4 Local Server         safe
DHCPv6 Local Server         safe
MPLS                        safe
Radius Relay Server         safe
SMDS                        safe
SonetVT                     safe
IPsec Tunnel (ST)           safe 
Example 2
host1#show redundancy clients all
         High Availability Client Information
         ------------------------------------
       client              mode       configuration
---------------------   -----------   -------------
atm1483DataService       supported        safe
AA83                     supported        safe
aaaServer                supported        safe
atmAal5                  supported        safe
atm                      supported        safe
Bridged Ethernet        unsupported       safe
Transparent Bridging    unsupported       safe
dcm                      supported        safe
dhcpExternal             supported        safe
DHCP Proxy Client       unsupported       safe
DS1                      supported        safe
DS3                      supported        safe
ethernet                 supported        safe
Flow Inspection         unsupported       safe
frameRelay              unsupported       safe
FT1                      supported        safe
Global Ipv6             unsupported       safe
Global Ip                supported        safe
HDLC                     supported        safe 
ipflowstats              supported        safe
IpSubscriberManager      supported        safe
IPTU                     supported        safe
IPVR                     supported        safe
IPsec Transport (ITM)   unsupported       safe
l2tpDialoutGenerator    unsupported       safe
l2tp                    unsupported       safe
DHCPv4 Local Server     unsupported       safe
DHCPv6 Local Server     unsupported       safe
MPLS                    unsupported       safe
PMGR                     supported        safe
pppoe                    supported        safe
ppp                      supported        safe
qos                      supported        safe
Radius Relay Server     unsupported       safe
SCM                      supported        safe
Cisco HDLC               supported        safe
SMDS                    unsupported       safe
Sonet                    supported        safe
SonetPath                supported        safe
SonetVT                 unsupported       safe
IPsec Tunnel (ST)       unsupported       safe 
show redundancy history

Use to display information about dates, times, and the number of occurrences for starts and switchovers.

Use the srp keyword to view SRP module-specific information.

Use the detail keyword to view additional history information.

Field descriptions

system up time—Amount of time elapsed since the last cold boot

last cold start—Date and time the router experienced the last cold start

last cold switchover—Date and time the router experienced the last cold switchover

last warm switchover—Date and time the router experienced the last warm switchover

cold starts—Total number of cold starts the router has experienced

switchovers—Number of cold, warm, and consecutive warm switchovers the router has experienced
Example 1
host1#show redundancy history
system up time:        0 00:08:01
last cold start:       2004-07-26 10:44:25
last cold switchover:  2004-07-25 18:51:56
last warm switchover:  2004-07-25 20:58:57
activation statistics:
    cold starts:           92
    switchovers:
        cold:              21
        warm:              147
        consecutive warm:  0
Example 2
host1#show redundancy history detail
system up time:        0 00:08:01
last cold start:       2004-07-26 10:44:25
last cold switchover:  2004-07-25 18:51:56
last warm switchover:  2004-07-25 20:58:57
activation statistics:
    cold starts:           92
    switchovers:
        cold:              21
        warm:              147
        consecutive warm:  0
                                          system
SRP activation time      type      slot   uptime    running release
-------------------   ----------   ----   ------   -----------------
2004-09-08 15:10:40   cold-start    00     ---     erx_6-0-0b1-8.rel
2004-09-08 14:39:10   cold-start    00     ---     erx_6-0-0b1-1.rel 
show redundancy line-card

Use to display line-module-specific redundancy information.

Field descriptions

automatic reverting—State of automatic reverting (on or off)

slot(s)—Slots in which the line modules reside

hardware role—Function of the line module: primary or spare

lockout config—Status of redundancy on this line module (protected—Line module redundancy is enabled; locked out—Line module redundancy is disabled)

backed up by slot—Slot that contains the line module that is a spare for this primary line module

sparing for slot—Slot that contains the primary line module for which this line module is a spare

revert at—Time at which you want line module to revert

midplane type—Identifier for the type of midplane

midplane rev—Hardware revision number of the redundancy midplane
Example
host1#show redundancy line-card
automatic reverting is off
                              backed
                                up     sparing
       hardware    lockout      by       for     revert
slot     role      config      slot     slot       at
----   --------   ---------   ------   -------   ------
 3       ---         ---       ---       ---      ---
 8      spare        ---       ---       ---      ---
 12    primary    protected    ---       ---      ---
         midplane   midplane
slots      type       rev
------   --------   --------
8 - 13      6          0
show redundancy srp

Use to display SRP-module-specific redundancy information.

Use the brief keyword to display

Field descriptions

SRP

high-availability state—State of the high availability mode (disabled, active, or pending)

current redundancy mode—Redundancy mode currently being used by this router (high-availability or file-system-synchronization)

last activation type—Last type of activation that occurred on this router (that is, the method by which the SRP las booted [cold-start or warm-start])

Criteria Required for High Availability to be Active—Criteria required for HA to be active.

NOTE: All criteria must be "yes" for High Availability to be active.
Example 1
host1#show redundancy srp
high-availability state:  active
current redundancy mode:  high-availability
last activation type:     warm-switch
Example 2
host1#show redundancy srp detail
high-availability state:  active
current redundancy mode:  high-availability
last activation type:     warm-switch
   Criteria Required for High Availability to be Active
   ----------------------------------------------------
                     criterion                         met
----------------------------------------------------   ---
Active SRP hardware supports High Availability?        Yes
High Availability mode configured?                     Yes
Mirroring Subsystem present?                           Yes
Network Core Dumps disabled?                           Yes
Running configuration is safe for High Availability?   Yes
Standby SRP hardware supports High Availability?       Yes
Standby SRP is online and capable of mirroring?        Yes
Standby SRP is running the same release?               Yes
show redundancy switchover-history

Use to displays the high availability switchover history for the chassis.

Field descriptions

SRP activation time—Amount of time the SRP module has been active

type—Type of switchover

slot—Slot in which the SRP module resides

system uptime—Amount of time the chassis has been operational

running release—Release running on the SRP module at the time of the switchover

Example
host1#show redundancy switchover-history
                                             system
SRP activation time      type       slot     uptime          running release
-------------------   -----------   ----   ----------   -------------------------
2004-07-26 10:44:25   cold-start     07       ---       L-07-25-60b1mrg-e.rel
2004-07-25 20:58:57   warm-switch    06    0 00:15:08   L-07-25-60b1mrg-e.rel
2004-07-25 20:53:41   warm-switch    07    0 00:09:51   L-07-25-60b1mrg-e.rel
2004-07-25 20:44:43   cold-start     06       ---       L-07-25-60b1mrg-e.rel
2004-07-25 19:32:01   cold-start     06       ---       L-07-25-60b1mrg-d.rel
2004-07-25 18:58:01   warm-switch    06    0 00:12:01   L-07-25-60b1mrg-c.rel
2004-07-25 18:51:56   cold-switch    07    0 00:05:56   L-07-25-60b1mrg-c.rel
2004-07-25 18:46:54   cold-start     06       ---       L-07-25-60b1mrg-c.rel
2004-07-25 17:44:48   warm-switch    06    0 00:14:32   L-07-25-60b1mrg-b.rel
2004-07-25 17:31:07   cold-start     07       ---       L-07-25-60b1mrg-b.rel
2004-07-25 16:05:08   cold-start     07       ---       L-07-25-60b1mrg-a.rel
2004-07-24 23:25:09   warm-switch    07    0 16:27:03   L-07-24-60b1mrg-b.rel
2004-07-24 23:18:23   cold-switch    06    0 16:20:17   L-07-24-60b1mrg-b.rel
Clearing the Redundancy History

You can use the clear redundancy history command to clear the high availability switchover history for the router.

clear redundancy history

Use to clear the detailed high availability switchover history for the router.

Example
host1#show redundancy history detail
system up time:        0 00:08:01
last cold start:       2004-07-26 10:44:25
last cold switchover:  2004-07-25 18:51:56
last warm switchover:  2004-07-25 20:58:57
activation statistics:
    cold starts:           92
    switchovers:
        cold:              21
        warm:              147
        consecutive warm:  0
                                             system
SRP activation time      type       slot     uptime          running release
-------------------   -----------   ----   ---------- -------------------------
2004-07-26 10:44:25   cold-start     07       ---       L-07-25-60b1mrg-e.rel
2004-07-25 20:58:57   warm-switch    06    0 00:15:08   L-07-25-60b1mrg-e.rel
2004-07-25 20:53:41   warm-switch    07    0 00:09:51   L-07-25-60b1mrg-e.rel
2004-07-25 20:44:43   cold-start     06       ---       L-07-25-60b1mrg-e.rel
2004-07-25 19:32:01   cold-start     06       ---       L-07-25-60b1mrg-d.rel
2004-07-25 18:58:01   warm-switch    06    0 00:12:01   L-07-25-60b1mrg-c.rel
2004-07-25 18:51:56   cold-switch    07    0 00:05:56   L-07-25-60b1mrg-c.rel
host1#clear redundancy history
host1#show redundancy history
system up time:        0 00:08:01
last cold start:       2004-07-26 10:44:25
last cold switchover:  2004-07-25 18:51:56
last warm switchover:  2004-07-25 20:58:57
activation statistics:
    cold starts:           92
    switchovers:
        cold:              21
        warm:              147
        consecutive warm:  0
                                             system
SRP activation time      type       slot     uptime          running release
-------------------   -----------   ----   ---------- -------------------------
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