C-13
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix C Firmware Upgrade and Downgrade Procedu r es Standard Upgrade and Downgrade Procedures
c. Enter the dspfwrevs command to verify the correct firmware revision.
d. Enter the dspadrxlat command to ensure that the number of connections is correct.
Step 7 Enter the dsptotals command for all primary and stand-alone SMs.
Use this step to examine the number of lines, p or t s, an d ch an n els af t er the up gra de or downgrade. The
values can be compared to those b ef or e th e d own lo ad a nd , t he re fo r e, it can be established that the
configuration has remained the same. Restore the ASC and SM configurations if necessary.
Procedure 7—Standard Downgrade, 1-Cor e Card Set
Procedure 7 is used for 1.4.y to 2.x, and 2.4.y to 3.x.
Step 1 Check compatibility.
With any downgrade technique, there is a lway s t he issue of compatibility. Any release c an b e
downgraded to any othe r release, but in many in s tan c e s configuration infor m at io n will be lost.
Hardware incompatibilities can p r event s om e d owng ra de s. F or exa mple, Release 2 and Release 3
service modules require two Flash chips. Release 4 SMs will be shipped with a single Flash chip. A
Release 4 shelf containing BNM-E1 ca rds or serv ice re sour ce modu le 3T3 c ards cann ot be do wn grade d
to Release 2 or Release 3. C heck the compatibility m at ri x to d etermine if a particular down g ra de is
supported and how it affects configurat io n lo s s.
Step 2 Enter the dspadrcxat command. Note the value of th e C o nn N u m OfValidEntries p a ra m e te r.
This value indicates the number of connections. This command is run again at the end of the procedure
to ensure that the number of co nnec tions has not changed.
Step 3 For all stand-alone and primary SM s
a. Enter the dsptotals command.
The configuration of the shelf should not be changed during the downgrade process. Use this step
to examine the number of lines, ports, and channels before the upgrade or downgrade. A similar
step can be made to examine the same configuration parameters after the upgrade or downgrade
and, therefore, it can be estab li she d that the configuration has rema ined the same.
b. Enter the tftp put <ASC_BT_fi le> AXIS_A SC_B ACKUP.FW command. This step downloads the
new boot code into the ASC.
c. Enter the chkflash command. This command ca lculates and compares the Flash ch ecksum to verify
whether the boot code is correct.
d. Enter the version command. This command displays the version of the boot code currently stored
in Flash memory. This ste p dow nloads new firmware int o th e ASC.
e. Enter the tftp put <ASC_FW_file> AXIS_ASC_ACTIVE.FW command.
f. Check the file size of the download ed firmw ar e. Use this step to check that the fir mw ar e w as
downloaded successfully to the ASC disk.
g. Enter the dspfwrevs command to verify the correct firmware revision.
Step 4 For all SMs
a. Enter the tftp put <SM_BT_file> AXIS_SM_1_$slot.BOOT command.
b. Enter the chkflash command. This command ca lculates and compares the Flash ch ecksum to verify
whether the boot code is correct.