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Cisco Secure Router 520 Series Software Configuration Guide
OL-14210-01
Chapter 12 Troubleshooting
Software Upgrade Methods
Example 12-7 shows sample output for the debug atm packet command.
Example 12-7 Viewing ATM Packet Processing
Router# debug atm packet
Router#
01:23:48:ATM0(O):
VCD:0x1 VPI:0x1 VCI:0x64 DM:0x0 SAP:AAAA CTL:03 OUI:000000 TYPE:0800 Length:0x70
01:23:48:4500 0064 0008 0000 FF01 9F80 0E00 0010 0E00 0001 0800 A103 0AF3 17F7 0000
01:23:48:0000 004C BA10 ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
01:23:48:ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
01:23:48:ABCD ABCD ABCD ABCD ABCD
01:23:48:
01:23:48:ATM0(I):
VCD:0x1 VPI:0x1 VCI:0x64 Type:0x0 SAP:AAAA CTL:03 OUI:000000 TYPE:0800 Length:0x70
01:23:48:4500 0064 0008 0000 FE01 A080 0E00 0001 0E00 0010 0000 A903 0AF3 17F7 0000
01:23:48:0000 004C BA10 ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
01:23:48:ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD ABCD
01:23:48:ABCD ABCD ABCD ABCD ABCD
01:23:48:
Table 12-3 describes some of the fields shown in the debug atm packet command output.
Software Upgrade Methods
Several methods are available for upgrading software on the Cisco Secure Router 520 Series routers,
including:
• Copy the new software image to flash memory over the LAN or WAN while the existing Cisco IOS
software image is operating.
• Copy the new software image to flash memory over the LAN while the boot image (ROM monitor)
is operating.
• Copy the new software image over the console port while in ROM monitor mode.
• From ROM monitor mode, boot the router from a software image that is loaded on a TFTP server.
To use this method, the TFTP server must be on the same LAN as the router.
Ta ble 12-3 debug atm packet Command Output Description
Field Description
ATM0 Interface that is generating the packet.
(O) Output packet. (I) would mean receive packet.
VCD: 0xn Virtual circuit associated with this packet, where n is some
value.
VPI: 0xn Virtual path identifier for this packet, where n is some value.
DM: 0xn Descriptor mode bits, where n is some value.
Length: n Total length of the packet (in bytes) including the ATM
headers.