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C-45
Cisco MGX 8220 Installation and Configuration
Release 5.0, Part Number 78-6430-03 Rev. D0, November 2003
Appendix C Firmware Upgrade and Downgrade Procedures
Description of Upgrade/Downgrade Terminology
flashStartAddr and flashEndAddr
The flashStartAddr and flashEndAddr commands are simply variables that determine where within
Flash memory a file will be written. The ASC flashStartAddr defaults to 0xbfc00000 (ASC backup
boot code) and need never be changed (the ASC firmware resides on the ASC disk in Releases 2, 3, and
4). The ASC flashEndAddr defaults to 0xbfc80000.
In Releases 2 and 3, the SM flashStartAddr defaults to 0xbfc40000 (SM firmware) after the SM is
reset. The SM flashEndAddr defaults to 0xbfd00000.
In Release 4, the SM flashStartAddr defaults to 0xbfc00000 (SM backup boot code) after the SM is
reset. The SM flashEndAddr defaults to 0xbfc80000.
SM backup boot code (Releases 2 and 3):
shelf.1.<slot>.<type>.<a|s>shellConn
shelf.1.<slot>.<type>.<a|s>flashStartAddr = 0xbfc00000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfc40000
SM backup boot code (Release 4):
shelf.1.<slot>.<type>.<a|s>shellConn
shelf.1.<slot>.<type>.<a|s>flashStartAddr = 0xbfc00000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfc80000
SM firmware (Releases 2 and 3):
shelf.1.<slot>.<type>.<a|s>shellConn
shelf.1.<slot>.<type>.<a|s>flashStartAddr = 0xbfc40000
shelf.1.<slot>.<type>.<a|s>flashEndAddr = 0xbfd00000
resetsys
The MGX 8220 active ASC CLI command, resetsys, is used to reset all the cards in the MGX 8220
shelf.
shelf.1.<3|4>.ASC.a > resetsys
The resetsys command terminates all Telnet sessions. You must re-initiate a Telnet session after an ASC
card returns to the active state.
softswitch
The MGX 8220 active ASC CLI command, softswitch, is used to transfer traffic between a primary and
secondary SM, while greatly minimizing the traffic loss. The softswitch command is available in
Release 4.
shelf.1.<3|4>.ASC.a > softswitch <primary> <secondary>
shelf.1.<3|4>.ASC.a > softswitch <secondary> <primary>