Cisco Systems 1000 Series Manual De Usuario

The Cisco ASR 1000 Series Router ISSU procedure has a rollback timer. Rollback timers are used for 
for ISSU procedures on all Cisco routers that support ISSU, but this section will provide a brief overview 
of ISSU rollback timers on the Cisco ASR 1000 Series Routers.

During ISSU, the rollback timer begins after the consolidated package or subpackage is loaded. If the 
upgrade does not move forward in the amount of time specified in the rollback timer, the configuration 
will automatically “roll back” to the previous configuration and the ISSU upgrade will be cancelled. 

Upgrades using the issu command set and the request platform command set both have the rollback 
timer option. The issu command set always uses a rollback timer; the request platform command set 
does not use a rollback timer unless the auto-rollback option is used in the request platform software 
package install command line.

For the issu command set, the issu acceptversion command can be entered to stop the rollback timer 
without committing the upgrade during the ISSU upgrade. The issu commitversion command can be 
entered to stop the rollback timer and commit the ISSU upgrade.

SIPSPA

7

No (SPAs in SIP do not forward 
traffic during upgrade)

Yes (With MDR, traffic is
forwarded with minimal

interruption)

ELCBase

8

No (Built-in SPAs in an Ethernet 
Line Card (ELC) do not forward 
traffic during upgrade)

Yes (With MDR, traffic is
forwarded with minimal

interruption)

ELCSPA

9

No (Built-in SPAs in an ELC do 
not forward traffic during 
upgrade)

Yes (With MDR, traffic is
forwarded with minimal

interruption)

NIM SSD

10

No (NIM reload required)

NA

NGWIC T1E1

11

No (T1E1 do not forward traffic 
during upgrade)

NA

1.

Only supported if software redundancy is configured on the RP.

2.

ESP has to reload to complete ESPBase subpackage upgrade. All router traffic will be lost during ESP upgrade.

3.

An ESP switchover occurs as part of the upgrade, so traffic is forwarded with minimal interruption.

4.

ESP has to reload to complete ESPBase subpackage upgrade. All router traffic will be lost during ESP upgrade and 
ESPX86Base is not included in the RP1 bundle.

5.

An ESP switchover occurs as part of the upgrade, so traffic is forwarded with minimal interruption.ESPX86Base is not 
included in the RP1 bundle.

6.

Any SIPBase upgrade will require the SPA interfaces to go down during the upgrade for all the SPAs in the SIP.

7.

Any SIPSPA upgrade will require the SPA interfaces for that particular SPA to go down during the upgrade.

8.

Any ELCBase upgrade will require the ELC  interfaces to go down during the upgrade for all the SPAs in the SIP. ELCBase 
is not included in the RP1 bundle

9.

Any ELCSPA upgrade will require the ELC interfaces for that particular SPA to go down during the upgrade. ELCSPA is not 
included in the RP1 bundle

10.  NIM SSD is a built-in module available in ASR 1001-X platform. It is a slot for an extra harddisk, which helps increase the 

memory.

11. NGWIC T1E1 is a built-in module available in ASR 1001-X platform, used for serial interface. Any NGWIC T1E1 upgrade 

will require T1E1 interfaces for that particular SPA to go down during the upgrade.