Lldp Troubleshooting; Proposed Solution - Avaya B189 Installing And Maintaining

LLDP Troubleshooting

If the Waiting for LLDP message appears for more than a few seconds, the message generally
indicates a problem with getting a value for the call server IP address. This error can occur due to
incorrect settings in script files or in the way the network is configured.
On booting, the phone must obtain a valid IP address for the call cerver. The phone can obtain the
value, known as MCIPADD, from several sources:
• A static or manually programmed address on the phone.
• The 46xxsettings.txt file MCIPADD setting.
• A DHCP offer using option 242 that includes the MCIPADD setting.
• Link Layer Discovery Protocol or LLDP.
If the phone cannot find MCIPADD through any of these means, it will fail to register with the Call
Server and will display the Waiting for LLDP message several times before rebooting. For example,
if the MCIPADD value was specified in the 46xxsetting file and the network file server fails, the
phone will not be able to read the MCIPADD value or any of the 46xxsettings file parameters.
Therefore, do not use this method of providing MCIPADD.
Related Links
Troubleshooting on page 38

Proposed Solution

Procedure
1. A more robust way to provide this value is to use DHCP. You can administer the DHCP
server to provide MCIPADD using DHCP Option 242. You can also administer the
TLSSRVR, HTTPSRVR and L2QVLAN parameters using this option. phones using non-
static addressing automatically use the DHCP request method. Option 242 is the default
DHCP offer and may get MCIPADD and other addresses using this way.
2. The phone displays the Waiting for LLDP message when both the HTTP and HTTPS Server
IP address are not administered. To administer the HTTP and/or HTTPS server, use the
Administration menu ADDR procedure and enter the correct HTTP and or HTTPS File
Server IP address in the File Server field.
3. An alternative protocol known as LLDP can also supply call server, and file server with HTTP
and HTTPS IP addresses. This IETF standard protocol requires the network to be equipped
and configured to support LLDP. You can provide HTTP and the HTTPS Server and call
server IP addresses with LLDP in the network using proprietary Transport Layer Values
(TLVs) to pass information to the phones.
September 2015 Installing and Maintaining Avaya B189 IP Conference Phone
Comments on this document? infodev@avaya.com
LLDP Troubleshooting
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