Specifications
Table Of Contents
- About This Document
- Understanding Networking and IP Addressing
- Introduction to Networking
- Networking using IP
- Niagara Considerations
- Additional Information
- Configuration and Troubleshooting Tools
- Connecting on a LAN
- Connecting with Direct Dial
- Connecting to an ISP
- Using Security Technologies
- Configuration Files Used for Communication
- Glossary
- Index
Niagara Release 2.3
Revised: May 22, 2002 Niagara Networking & Connectivity Guide
Chapter 3 Connecting on a LAN
Troubleshooting Connectivity to an Existing JACE Controller
3–20
Figure 3-8 IP address read from a Hyperterminal boot sequence.
The IP address of the JACE is listed on the line that begins inet on ethernet (e) :.
The IP address is listed (in dotted decimal), followed by a colon, and then the subnet
mask (in hexadecimal). For information on deciphering the subnet mask, see
“Converting the Subnet Mask from Hexadecimal”.
Step 5
After making note of the IP address, disconnect from the application and reboot the
JACE as described in Procedure 2-6.
Step 6
Connect to the JACE using the Admin Tool and change the faulty network settings
as described in Chapter 4 of the Niagara Quick Start Guide.
Converting the Subnet Mask from Hexadecimal
When the IP address displays during the VxWorks boot process, it is in dotted
decimal format (i.e. 10.10.8.248). However, the subnet mask is in plain hexadecimal
format, with no delimiter between each octet (FFFFFF00 rather than FF.FF.FF.00).
Use the following procedure to convert the subnet into dotted decimal format.
Procedure 3-8 Converting hexadecimal subnet mask to dotted decimal form.
Step 1
On your engineering PC, open the Windows calculator.
Step 2
From the menu, select View > Scientific
Step 3
Click the Hex (hexadecimal) radio button.
IP address in
dotted decimal
Subnet mask in
hexadecimal