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

Chapter 3 Connecting on a LAN
Using DHCP
Niagara Release 2.3
Niagara Networking & Connectivity Guide Revised: May 22, 2002
3–27
Using Target Shell Commands
You may find it necessary to troubleshoot the DHCP settings of a JACE-4/5. Several
commands are available from the VxWorks target shell for this purpose. To execute
the commands listed in this section, connect to the Target Shell of the JACE as
described in “Hyperterminal,” page 2-7, then type the command (without spaces) at
the prompt.
ifShow—Displays the MAC address of the JACE-4/5.
Example 3-1 The ifShow command.
The MAC address is the 12-digit hexadecimal number in the highlighted line.
dhcpcServerShow(pDhcpcBootCookie)—Displays the IP address of the
DHCP server being used.
Example 3-2 The dhcpcServerShow(pDhcpcBootCookie) command.
The DHCP server is listed in the highlighted line.
-> ifShow
fei (unit number 0):
Flags: (0x8063) UP BROADCAST MULTICAST ARP RUNNING
Type: ETHERNET_CSMACD
Internet address: 10.10.8.248
Broadcast address: 10.255.255.255
Netmask 0xff000000 Subnetmask 0xff000000
Ethernet address is 00:01:f0:ff:ff:12
Metric is 0
<snip>
-> dhcpcServerShow(pDhcpcBootCookie)
DHCP server: 10.10.8.21
value = 0 = 0x0