Cisco Router 800 Series Software Configuration Guide
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B-15 Cisco 800 Series Routers Software Configuration Guide 78-5372-06 Appendix B ROM Monitor Debug Commands context—displays processor context; for example: rommon 7> context CPU context of the most recent exception: PC = 0x801111b0 MSR = 0x00009032 CR = 0x53000035 LR = 0x80113694 CTR = 0x801065e4 XER = 0xa0006d36 DAR = 0xffffffff DSISR = 0xffffffff DEC = 0xffffffff TBU = 0xffffffff TBL = 0xffffffff IMMR = 0xffffffff R0 = 0x00000000 R1 = 0x80005ea8 R2 = 0xffffffff R3 =...
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Appendix B ROM Monitor Disaster Recovery with Console Download of Cisco IOS Software B-16 Cisco 800 Series Routers Software Configuration Guide 78-5372-06 meminfo—displays size in bytes, starting address, available range of main memory, the starting point and size of packet memory, and size of NVRAM; for example: rommon 9> meminfo Main memory size: 40 MB. Available main memory starts at 0x10000, size 40896KB IO (packet) memory size: 5 percent of main memory. NVRAM size: 32KB Disaster Recovery...
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B-17 Cisco 800 Series Routers Software Configuration Guide 78-5372-06 Appendix B ROM Monitor Disaster Recovery with Console Download of Cisco IOS Software Follow the steps below to run Xmodem: 1.Move the image file to the local drive where the Xmodem will execute. 2.Enter the xmodem command. Error Reporting Because the ROM monitor console download uses the console to perform the data transfer, error messages are displayed on the console only when the data transfer is terminated. If an error...
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Appendix B ROM Monitor Disaster Recovery with Console Download of Cisco IOS Software B-18 Cisco 800 Series Routers Software Configuration Guide 78-5372-06 Debug Commands Most ROM monitor debugging commands are functional only when the Cisco IOS software has crashed or is halted. If you enter a debugging command and Cisco IOS crash information is not available, you see the following error message: “xxx:kernel context state is invalid, cannot proceed.” The following are ROM monitor debugging...
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B-19 Cisco 800 Series Routers Software Configuration Guide 78-5372-06 Appendix B ROM Monitor Disaster Recovery with Console Download of Cisco IOS Software R28 = 0xffffffff R29 = 0xffffffff R30 = 0xffffffff R31 = 0xffffffff frame—displays an individual stack frame. sysret—displays return information from the last booted system image. This information includes the reason for terminating the image, a stack dump of up to eight frames, and, if an exception is involved, the address where the...
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Appendix B ROM Monitor Disaster Recovery with Console Download of Cisco IOS Software B-20 Cisco 800 Series Routers Software Configuration Guide 78-5372-06 You must reset or power cycle for new config to take effect rommon 2 >boot The router will boot the Cisco IOS image in Flash memory. The configuration register will change to 0x2101 the next time the router is reset or power cycled.
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C-1 Cisco 800 Series Software Configuration Guide 78-5372-06 APPENDIXC Common Port Assignments Ta b l e C - 1 lists currently assigned Transmission Control Protocol (TCP) port numbers. To the extent possible, the User Datagram Protocol (UDP) uses the same numbers. Table C-1 Currently Assigned TCP and UDP Port Numbers Port Keyword Description 0–Reserved 1–4–Unassigned 5 RJE Remote job entry 7ECHO Echo 9 DISCARD Discard 11 USERS Active users 13 DAYTIME Daytime 15 NETSTAT Who is up or NETSTAT 17 QUOTE...
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Appendix C Common Port Assignments C-2 Cisco 800 Series Software Configuration Guide 78-5372-06 37 TIME Time 39 RLP Resource Location Protocol 42 NAMESERVER Host Name Server 43 NICNAME Who is 49 LOGIN Login Host Protocol 53 DOMAIN Domain Name Server 67 BOOTPS Bootstrap Protocol Server 68 BOOTPC Bootstrap Protocol Client 69 TFTP Trivial File Transfer Protocol 75–Any private dial-out service 77–Any private RJE service 79 FINGER Finger 95 SUPDUP SUPDUP Protocol 101 HOST NAME NIC host name server 102...
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C-3 Cisco 800 Series Software Configuration Guide 78-5372-06 Appendix C Common Port Assignments 138 NETBIOS-DGM NETBIOS datagram service 139 NETBIOS-SSN NETBIOS session service 161 SNMP Simple Network Management Protocol 162 SNMP-TRAP Simple Network Management Protocol traps 512 rexec UNIX rexec (control) 513 TCP—rlogin UDP—rwhoTCP—UNIX rlogin UDP—UNIX broadcast name service 514 TCP—rsh UDP—syslogTCP—UNIX rsh and log 515 Printer UNIX line printer remote spooling 520 RIP Routing Information...
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Appendix C Common Port Assignments C-4 Cisco 800 Series Software Configuration Guide 78-5372-06