Cisco ASR1002 - ASR 1002 Router Software Configuration Manual page 85

Software Upgrade Process
upgrade. The SPA and SIP software subpackages must be upgraded on a per-SPA or per-SIP basis. See
Table 11
be performed.
If you are updating multiple subpackages, you should also realize that the sequence of the upgrade is
important to minimize router downtime for the software upgrade (see the
SubPackages (Prior to Cisco IOS XE Release 2.1.2)" section on page
The specific procedures in this document represent supported and tested installation sequences. The
Cisco IOS XE system software allows other installation sequences for special purposes under the
guidance of Cisco customer support representatives, but the steps in this document should be followed
otherwise. These steps should be followed completely, as the Cisco ASR 1000 Series Routers are
designed to run one version of Cisco IOS XE for all consolidated packages and subpackages on an RP,
and running subpackages from different versions of Cisco IOS XE can cause unexpected router behavior.
When performing ISSU upgrades on the Cisco ASR 1000 Series Routers, it is important to remember
that minimal interruption upgrades can be performed using either the issu command set or the request
platform command set, and that either command set can be used to perform limited interruption
individual consolidated package or subpackage upgrades.
ROMmon images are downloaded separately from Cisco IOS XE images and have their own installation
Note
procedures, and are therefore not mentioned as part in this document as part of the ISSU upgrade
procedure.
Table 11
be upgraded without losing any network traffic in single and dual RP and ESP configurations using
ISSU.
Table 12
SubPackage
Consolidated package (any)
RPBase
RPControl
RPAccess
RPIOS
ESPBase
SIPBase
SIPSPA
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. Any SIPBase upgrade will require the SPA interfaces to go down during the upgrade for all the SPAs in the SIP.
5. Any SIPSPA upgrade will require the SPA interfaces for that particular SPA to go down during the upgrade.
to view an In Service table that addresses the contexts where limited interruption upgrades can
provides a list of the Cisco ASR 1000 Series Routers subpackages and whether or not they can
Limited Interruption Upgrade Compatibility Table
4
5
Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
Nonredundant RP and ESP
No (Reload required)
No (RP Reload required)
Yes (in-service)
Yes (in-service)
1
Yes (IOS software switchover)
2
No (ESP reload required)
No (SPAs in SIP do not forward
traffic during upgrade)
No (SPAs in SIP do not forward
traffic during upgrade)
ISSU Upgrade for Redundant Platforms
"Using ISSU to Upgrade
75).
Redundant RP and ESP
Yes (RP switchover)
Yes (RP switchover)
Yes (in-service)
Yes (in-service)
Yes (RP switchover)
3
Yes (via ESP switchover)
No (SPAs in SIP do not forward
traffic during upgrade)
No (SPAs in SIP do not forward
traffic during upgrade)
3