Cisco ASR 903 Guide

Cisco ASR 903 Software Upgrade
▀ ISSU One Shot Upgrade Overview
▄ Cisco ASR 903 Router Design and Deployment Guide
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• Per IM outage times— this variable depends upon FPGA upgrade time (if required), the IM software download
time, and the value of the interface-module-delay keyword
• HA switchover time — 50 msec or less
• Network topology—to reduce outage time during an ISSU upgrade. It is important to design the network with
redundant route paths that allow traffic to be re-routed during individual IM outages. In this respect care must be
taken to insure redundant L2 and L3 routes are properly configured.
Table 5. IM-FPGA Upgrade
IM
Reload required
Packet Loss due to
RSP Switchover
Packet loss due to
IM switchover
Packet loss due to IM-
FPGA upgrade
Ethernet IMs
Only when IM-
FPGA upgraded
50 ms
-
30 – 60 seconds
TDM IMs
Always
50 ms
30 – 60 seconds
-
ISSU Preparation
In order to successfully achieve an ISSU upgrade using this procedure. A dual RP router must have previously
been booted in sub-package mode and the redundancy mode SSO must have been achieved. A consolidated
upgrade image should have been copied on the bootflash to the directory that was used to boot the base image. It
is not necessary to copy the upgrade image to the stby-bootflash as this will be performed as part of the one shot
procedure. Care should be taken to make sure stby-bootflash can accommodate the consolidated bin file as well
expanded package files. ISSU requires at least 450M space on both active and standby bootflash. This is to allow
space for expansion and extraction of files during bootup.
The following example demonstrates the contents of the bootflash and stby-bootflash prior to the one shot ISSU
procedure.
Directory of bootflash:/issu/
6380 Apr 18 2013 22:38:05 +00:00 packages.conf
223480164 Mar 14 2000 08:17:36 +00:00 asr903rsp1-universal.03.08.01.S.153-1.S1.bin
34371940 Apr 18 2013 16:01:00 +00:00 asr903rsp1-espbase.03.08.01.S.153-1.S1.pkg
5646 Apr 18 2013 16:01:00 +00:00 asr903rsp1-packages-
universal.03.08.01.S.153-1.S1.conf
25194852 Apr 18 2013 16:01:01 +00:00 asr903rsp1-rpaccess.03.08.01.S.153-1.S1.pkg
34224484 Apr 18 2013 16:01:08 +00:00 asr903rsp1-rpbase.03.08.01.S.153-1.S1.pkg
26745188 Apr 18 2013 16:01:15 +00:00 asr903rsp1-rpcontrol.03.08.01.S.153-1.S1.pkg
57137508 Apr 18 2013 16:01:31 +00:00 asr903rsp1-rpios-universal.03.08.01.S.153-
1.S1.pkg
25725284 Apr 18 2013 16:01:38 +00:00 asr903rsp1-sipbase.03.08.01.S.153-1.S1.pkg
24547684 Apr 18 2013 16:01:45 +00:00 asr903rsp1-sipspa.03.08.01.S.153-1.S1.pkg
228995428 May 23 2013 21:10:05 +00:00 asr903rsp1-universal.03.09.00.S.153-2.S.bin
Directory of stby-bootflash:/issu/
6380 Apr 18 2013 22:38:05 +00:00 packages.conf
223480164 Mar 14 2000 08:17:36 +00:00 asr903rsp1-universal.03.08.01.S.153-1.S1.bin
34371940 Apr 18 2013 16:01:00 +00:00 asr903rsp1-espbase.03.08.01.S.153-1.S1.pkg
5646 Apr 18 2013 16:01:00 +00:00 asr903rsp1-packages-

Cisco ASR 903 Specifications

General

Brand	Cisco
Model	ASR 903
Category	Network Router
Language	English