Alcatel 060170-10, User Manual, Page: 135 / 430

Setup and Installation
Page 4-3
Configuration Restrictions
A maximum of two (VSMs) (Voice Switching Modules, i.e. VSA/VSB/VSD) are supported in a
chassis. These VSMs may be placed in the same VLAN or different VLANs; however, no other
ports may be assigned to these VLAN(s). As a result, all VSM traffic must be routed in order to
reach VLANs on remote devices, and non-VSM ports and/or devices may not be added to the
VSM VLANs.
VSM VLANs must have spanning tree disabled, and must not send routing updates (RIP,
OSPF, or BGP) into the VLAN. The VSM uses the default gateway defined in the
vsmboot.asc
text configuration file to route traffic to remote destinations. The subnet mask on the default
gateway must match the subnet mask defined for the VSM in the
vsmboot.asc
file.
The VSM MAC address should be statically added to the VSM port to avoid 5 to 6 seconds of
silence at the start of a call, when not used with a gatekeeper. Optionally, the VSM port can
be set to optimized mode, and only the first call placed will have the period of silence.