Deciphering The Time Stamp; Ip Addresses; Converting Ip Addresses - Cisco 30 VIP Troubleshooting Manual

For cisco callmanager release 3.0(1)

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Cisco IP Telephony Troubleshooting Guide for Cisco CallManager Release 3.0(1)

Deciphering the Time Stamp

Using Microsoft Excel, you can write a formula to make converting this time stamp a little

easier. If the value is in cell A1, you can make another cell:

=A1/86400+DATE(1970,1,1)

There are 86400 seconds in a day.

Then format the resulting cell as a date/time field in Excel.

All IP addresses are stored in the system as unsigned integers. The database displays them as

signed integers. To convert the signed decimal value to an IP address, first convert the value to a

Hex number (taking into consideration that it is really an unsigned number). The 32bit Hex value

represents 4 bytes. The 4 bytes are in reverse order (Intel standard). To get the IP address,

reverse the order of the bytes, and convert each byte to a decimal number. The resulting 4 bytes

represent the 4-byte fields of the IP address in dotted notation.

Note: The database will display it as a negative number when the low byte of the IP address has

the most significant bit set.

For example: IP Address 192.168.18.188 would be displayed as follows

Database Display = -1139627840.

This converts to a Hex value of 0xBC12A8C0.

Reverse the Hex bytes = C0A812BC

Bytes Converted from Hex to Decimal = 192 168 18 188 which would be displayed as

192.168.18.188.

Example2: IP Address 192.168.18.59

Database Display = 991078592

This converts to a Hex value of 0x3B12A8C0

Reverse Byte order = C0A8123B

Bytes Converted from Hex to Decimal = 192 168 18 59 which would be displayed as

192.168.18.59.

CO A8 12 BC

C0 A8 12 3B

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