User's Manual 112 Document #: LTRT-65422
MP-11x & MP-124
Notes:
• When configuring the network interfaces and VLANs in the Multiple
Interface table using the Web interface, it is recommended to check that
your configuration is valid, by clicking the Done button in the Multiple
Interface Table page.
• Upon device start up, the Multiple Interface table is parsed and passes
comprehensive validation tests. If any errors occur during this validation
phase, the device sends an error message to the Syslog server and falls
back to a "safe mode", using a single interface and no VLANs. Ensure
that you view the Syslog messages that the device sends in system
startup to see if any errors occurred.
11.2.3 Troubleshooting the Multiple Interface Table
If any of the Multiple Interface table guidelines are violated, the device falls back to a "safe
mode" configuration, consisting of a single IPv4 interface without VLANs. For more
information on validation failures, consult the Syslog messages.
Validation failures may be caused by one of the following:
One of the Application Types (OAMP, Control, or Media) are missing in the IPv4
interfaces.
There are too many interfaces for Application Type, OAMP. There is only one
interface defined, but the 'Application Types' column is not set to OAMP + Media +
Control (numeric value 6).
An IPv4 interface was defined with 'Interface Type' other than IPv4 Manual (10).
Two interfaces have the same VLAN ID value while VLANs are enabled.
Two interfaces have the same name.
At least two interfaces share the same address space or subnet.
Apart from these validation errors, connectivity problems may be caused by one of the
following:
Trying to access the device with VLAN tags while booting from BootP/DHCP.
Trying to access the device with untagged traffic when VLANs are on and Native
VLAN is not configured properly.
The IP Routing table is not configured properly.
11.2.4 Networking Configuration Examples
This section provides configuration examples of networking interfaces.
11.2.4.1 One VoIP Interface for All Applications
This example describes the configuration of a single VoIP interface for all applications:
1. Multiple Interface table: Configured with a single interface for OAMP, Media and
Control:
Table 11-2: Example of Single VoIP Interface in Multiple Interface Table
Index
Application
Type
IP Address
Prefix
Length
Default
VLAN
ID
Interface
Name
0 OAMP, Media &
Control
192.168.85.14 16 192.168.0.1 1 myInterface
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