Cat6K - Software Modularity

Software Modularity is an enhancement to the existing Cat6K IOS, which allows you apply patches to individual subsystem (Subsystem ISSU) and allows the change to be applied with no service disruption.

This example will show you how to enable the software modularity feature on IOS and apply maintenance packs.

You'll quickly identify the difference by doing a "show process cpu"

6500-1#show process cpu
CPU utilization for five seconds: 2%; one minute: 2%; five minutes: 2%
PID 5Sec 1Min 5Min Process
1 0.4% 0.5% 0.3% kernel
3 0.0% 0.0% 0.0% qdelogger
4 0.0% 0.0% 0.0% devc-pty
5 0.0% 0.0% 0.0% devc-mistral.proc
6 0.0% 0.0% 0.0% pipe
7 0.0% 0.0% 0.0% dumper.proc
4104 0.0% 0.0% 0.0% pcmcia_driver.proc
4105 0.0% 0.0% 0.0% bflash_driver.proc
12298 0.0% 0.0% 0.0% mqueue
12299 0.0% 0.0% 0.0% flashfs_hes.proc
12300 0.0% 0.0% 0.0% dfs_bootdisk.proc

You can also get more details on an individual process with "show process detailed iprouting.iosproc"

6500-x#show process detailed iprouting.iosproc
Job Id: 76
PID: 16427
Executable name: iprouting.iosproc
Executable Path: sbin/iprouting.iosproc
Instance ID: 1
Respawn: ON
Respawn count: 1
Respawn since last patch: 1
Max. spawns per minute: 30
Last started: Thu Apr 20 14:15:12 2006
Process state: Run
Feature name: iprouting
Core: SHAREDMEM MAINMEM
Max. core: 0
Level: 100
Mandatory: ON
Last restart userid:
Related Processes:
PID TID Stack pri state Blked HR:MM:SS:MSEC FLAGS NAME
16427 1 32K 10 Receive 1 0:00:00:0264 00000000 iprouting.iospro
16427 2 32K 10 Receive 1 0:00:00:0000 00000000 iprouting.iospro
16427 3 32K 10 Receive 1 0:00:00:0616 00000000 iprouting.iospro
16427 4 32K 11 Nanosleep 0:00:00:0000 00000000 iprouting.iospro
16427 5 32K 10 Receive 1 0:00:00:0068 00000000 iprouting.iospro
16427 6 32K 10 Receive 1 0:00:00:0000 00000000 iprouting.iospro

And "show process cpu detailed iprouting.iosproc"
6500-x#show proc cpu detailed iprouting.iosproc
CPU utilization for five seconds: 2%; one minute: 2%; five minutes: 2%
PID/TID 5Sec 1Min 5Min Process Prio STATE CPU
16427 0.0% 0.0% 0.0% iprouting.iosproc 1.236
1 0.0% 0.0% 0.0% 10 Receive 0.308
2 0.0% 0.0% 0.0% 10 Receive 0.000
3 0.0% 0.0% 0.0% 10 Receive 0.628
4 0.0% 0.0% 0.0% 11 Nanosleep 0.000
5 0.0% 0.0% 0.0% 10 Receive 0.068
6 0.0% 0.0% 0.0% 10 Receive 0.000
Process sbin/iprouting.iosproc, type IOS, PID = 16427
CPU utilization for five seconds: 0%/0%; one minute: 0%; five minutes: 0%
Task Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Task Name
1 60 498 120 0.00% 0.00% 0.00% 0 Hot Service Task
2 228 2764 82 0.00% 0.00% 0.00% 0 Service Task
3 0 9 0 0.00% 0.00% 0.00% 0 Service Task
4 0 4 0 0.00% 0.00% 0.00% 0 Service Task
5 3 5 600 0.00% 0.00% 0.00% 0 Chunk Manager
6 0 579 0 0.00% 0.00% 0.00% 0 Load Meter
7 0 1 0 0.00% 0.00% 0.00% 0 Connection Mgr
8 31 569 54 0.00% 0.00% 0.00% 0 OSPF Hello
9 0 291 0 0.00% 0.00% 0.00% 0 Check heaps
10 0 1 0 0.00% 0.00% 0.00% 0 Socket Timers
11 72 538 133 0.00% 0.00% 0.00% 0 IP Background
Task Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Task Name
12 0 111 0 0.00% 0.00% 0.00% 0 IP RIB Update
13 0 1 0 0.00% 0.00% 0.00% 0 Service Task
14 0 49 0 0.00% 0.00% 0.00% 0 Per-minute Jobs
15 76 496 153 0.00% 0.00% 0.00% 0 Hot Service Task
16 20 2928 6 0.00% 0.00% 0.00% 0 OSPF Router 1

1. In order to run the system in "installed" mode, the original binary file is expanded into a treed sub-dir file structure that allows for patching.

install file disk0:/s72033-ipservicesk9-vz.sxf4-demo disk0:/sys

2. Verfiy the creation of Directory Structure

dir disk0:/sys

3. Bind the system to the file system directory

install bind disk0:/sys

You'll see something like this after apply the "install bind" command:
6500-x#show running-config | include boot
boot system disk0:/sys/s72033/base/s72033-ipservicesk9-vm

To further verify, do a "show bootvar"
6500-x#show bootvar
BOOT variable = disk0:/sys/s72033/base/s72033-ipservicesk9-vm,12;
CONFIG_FILE variable does not exist
BOOTLDR variable =
Configuration register is 0x2102

4. Reload your system

Then verify your system after reload with the "show install running" command:
6500-1#show install running
Software running on card installed at location s72033_rp - Slot 1 :
B/P C State Filename
--- - -------- --------
B Active disk0:/sys/s72033_rp/base/DRACO2_MP
Software running on card installed at location s72033 - Slot 1 :
B/P C State Filename
--- - -------- --------
B Active disk0:/sys/s72033/base/s72033-ipservicesk9-vm(12.2(20060403:18507))
LEGEND:
-------:
B/P/MP - (B)ase image, (P)atch, or (M)aintenance (P)ack
'C' - (C)ommitted
Pruned - This file has been pruned from the system
Active - This file is active in the system
PendInst - This file is set to be made available to run on the
system after next activation.

5. Install maintenance pack
6500-x# install file disk0:/s72033-XMA0001.122-18.SXF4 disk0:/sys

6. Verify the maintenance pack installation
6500-x#show install running
Software running on card installed at location s72033 - Slot 1 :
B/P C State Filename
--- - -------- --------
B Active disk0:/sys/s72033/base/s72033-ipservicesk9-vm(12.2(20060403:185507))
Software running on card installed at location s72033_rp - Slot 1 :
B/P C State Filename
--- - -------- --------
B Active disk0:/sys/s72033_rp/base/DRACO2_MP
MP Maintenance Pack MA0001.122
P PendInst disk0:/sys/s72033_rp/patch/patch-XAA2101-00-0-n.so

7. Activate the maintenance pack
6500-x#install activate disk0:/sys

8. Verify activation of maintenance pack
6500-x#show install running
Software running on card installed at location s72033_rp - Slot 1 :
B/P C State Filename
--- - -------- --------
B Active disk0:/sys/s72033_rp/base/DRACO2_MP
MP Maintenance Pack MA0001.122
P Active disk0:/sys/s72033_rp/patch/patch-XAA2101-00-0-n.so
Software running on card installed at location s72033 - Slot 1 :
B/P C State Filename
--- - -------- --------
B Active disk0:/sys/s72033/base/s72033-ipservicesk9-vm(12.2(20060403:18507))