Справочник Пользователя для 3com SuperStack II
68
C
HAPTER
6: B
ASIC
C
ONFIGURATION
OF
P
ORTS
AND
P
ATHS
unbound from their default ports and waits in the dial pool for an
incoming call. When a call is received, the dynamic path that answers is
assigned to a virtual port, which is standing by with the appropriate
configuration information for the calling network. Because not all sites
using a dial pool call the central site at the same time, it is possible to
share a small group of paths with a larger group of sites. Each site that
can potentially call into the dial pool has its own virtual port defined, so
there are usually more virtual ports configured for the dial pool than
dynamic paths assigned to it.
incoming call. When a call is received, the dynamic path that answers is
assigned to a virtual port, which is standing by with the appropriate
configuration information for the calling network. Because not all sites
using a dial pool call the central site at the same time, it is possible to
share a small group of paths with a larger group of sites. Each site that
can potentially call into the dial pool has its own virtual port defined, so
there are usually more virtual ports configured for the dial pool than
dynamic paths assigned to it.
Parent Ports for Frame Relay and X.25
When you configure an X.25, or Frame Relay virtual port, it inherits the
attributes of the path over which it is defined. It also inherits some of the
attributes of its parent port.
attributes of the path over which it is defined. It also inherits some of the
attributes of its parent port.
For PPP dial virtual ports, no parent port exists because the path was
unbound from its port and placed into the dynamic dial path pool.
unbound from its port and placed into the dynamic dial path pool.
Unlike Frame Relay and X.25 virtual ports, which are always associated
with a particular path, PPP virtual ports can potentially use any path in the
dynamic dial path pool. PPP virtual ports also can be used with dial-up
related parameters.
with a particular path, PPP virtual ports can potentially use any path in the
dynamic dial path pool. PPP virtual ports also can be used with dial-up
related parameters.
For example, if you create a Frame Relay or X.25 virtual port
associated with a wide area port, the virtual port inherits port attributes
from the following sources:
associated with a wide area port, the virtual port inherits port attributes
from the following sources:
■
Default and configured values of PORT Service parameters specified
for a wide area port, with the exception PORT Service parameters that
are not related to X.25 and Frame Relay virtual ports.
for a wide area port, with the exception PORT Service parameters that
are not related to X.25 and Frame Relay virtual ports.
■
Default and configured values of parameters from all other services
specified for a wide area port.
specified for a wide area port.
To configure a virtual port, you must specify the virtual port and not the
parent port. For example, if you are using the SETDefault !<port> -BCN
CONTrol = Enabled syntax, you must specify the virtual port number
instead of the parent port number for <port>. For complete information
on the numbering convention of virtual ports, see “Path and Port
Numbering” on page 69.
parent port. For example, if you are using the SETDefault !<port> -BCN
CONTrol = Enabled syntax, you must specify the virtual port number
instead of the parent port number for <port>. For complete information
on the numbering convention of virtual ports, see “Path and Port
Numbering” on page 69.