ATM Configuration and Troubleshooting Guide

Troubleshooting
Troubleshooting LAN Emulation
Chapter 9234
Checking Source/Destination ELAN IP I/F Configurations
The LEC needs a unique IP interface for each ELAN that it joins. You
must configure each ELAN interface with an IP address and subnet
mask, by using SAM. Each ELAN represents a logical IP subnet, so the
IP address and subnet mask for the LEC must be valid for the IP subnet.
To verify that the LAN Emulation interfaces are configured correctly, do
the following:
Step 1. Type the command netstat -i to get a list of all IP interfaces. Check
that each primary ELAN interface (ela0, ela1 ...) has a valid IP address
and subnet mask.
In the example below (for HP-UX 10.20), the ELAN interface ela0 has
been configured with an IP interface:
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
ni0* 0 none none 0 0 0 0 0
ni1* 0 none none 0 0 0 0 0
lo0 4608 loopback localhost 452 0 452 0 0
atm0 9188 none none 0 0 0 0 0
ipa0 9180 25.128.168 25.128.175.154 556 0 1259 0 0
lan0 1500 15.128.168 tmlab154.bentley.com
8287124 1 65164 0 85
ela0 1500 35.128.168 35.128.175.154 101761 0 127 0 0
In the example below (for HPUX 11.X), the ELAN interface el100 has
been configured with an IP interface.
Name Mtu Network Address Ipkts Opkts
lo0 4136 127.0.0.0 localhost 620 622
lan0 1500 15.128.168.0 coriolis 30614 15978
cip100 9180 25.128.1.0 25.128.1.9 5910 3086
el100 1500 25.128.10.0 25.128.10.79 2539 1060
cip101 9180 25.128.2.0 25.128.2.8 0 0
el200 1500 25.128.20.0 25.128.20.79 81 39
Step 2. To determine the ELAN name for the interface, use this command:
elstat -n net_interface -v
Step 3. If any interfaces do not have a valid IP address or subnet mask, rerun
SAM and reconfigure the interface(s) with a correct IP address and
subnet mask.