Cambium PTP 450 series, Руководство пользователя

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Data network planning PTP 450 User Guide
ptp-450 (July 2014)
2-83
PTP modules provide the VLAN frame filters that are described in Table 42 .
Table 42 VLAN filters in point-to-multipoint modules
Where VLAN is
active,
if this parameter
value is selected …
then a frame is discarded if…
because of this VLAN
filter in the software: entering the bridge/
NAT switch through…
Ethernet… TCP/IP…
any combination of VLAN
parameter settings
with a VID not in
the
membership table
Ingress
any combination of VLAN
parameter settings
with a VID not in the
membership table
Local Ingress
Allow Frame Types:
Tagged Frames Only
with no 802.1Q tag Only Tagged
Allow Frame Types:
Untagged Frames Only
with an 802.1Q tag,
regardless of VID
Only Untagged
Local BHS Management:
Disable in the BHS, or
All Local BHS
Management:
Disable in the BHM
with an 802.1Q tag
and a VID in the
membership table
Local BHS Management
leaving the bridge/
NAT switch through…
Ethernet… TCP/IP…
any combination of VLAN
parameter settings
with a VID not in
the
membership table
Egress
any combination of VLAN
parameter settings
with a VID not in the
membership table
Local Egress
Priority on VLANs (802.1p)
The radios can prioritize traffic based on the eight priorities described in the IEEE 802.1p specification. When the
high-priority channel is enabled on an BHS, regardless of whether VLAN is enabled on the BHM for the sector,
packets received with a priority of 4 through 7 in the 802.1p field are forwarded onto the high-priority channel.
Operators may configure priority precedence as 802.1p Then Diffserv (Default) or Diffserv Then 802.1p. Since
these priority precedence configurations are independent between the BHM and BHS, this setting must be
configured on both the BHM and the BHS to ensure that the precedence is adhered to by both sides of the link.
VLAN settings can also cause the module to convert received non-VLAN packets into VLAN packets. In this case,
the 802.1p priority in packets leaving the module is set to the priority established by the DiffServ configuration.
If you enable VLAN, immediately monitor traffic to ensure that the results are as desired. For example, high-
priority traffic may block low-priority.