User`s guide

SET UP
Page 44 User’s guide ref 9018809-01 XSRING+ SHDSL switch
14.2.2 Ingress policy set up
That part of the page is made to register which process must be applied to the Ethernet frames when
they enter a given port of the switch or when they are received from the line.
One defines
which already tagged frames can enter the switch;
which VLAN ID will be assigned to untagged frames coming into the switch.
Example :
Let us go on with the example given at the previous paragraph; we have defined the Egress policy :
Egress policy
Eth 1 Eth 2 SHDSL
VLAN 4
Yes Untagged No Yes unmodified
VLAN 5
Yes Untagged Yes tagged Yes unmodified
VLAN 12
No Yes tagged Yes unmodified
The table hereafter, defines the ingress policy :
Ingress policy
Eth 1 Eth 2 SHDSL
Accept all frames X
Refuse a frame not belonging to a configured VLAN
X
Refuse a frame not belonging to a VLAN associated
to the port
X
VLAN ID 4 5 12
Ethernet 1
Only frames already tagged with the VLAN 4 can enter the switch through the port 1.
Untagged frames are tagged with the VLAN 4.
Ethernet 2
Only frames already tagged with the VLAN 4 or 5 or 12 can enter the switch through the port 2.
Untagged frames are tagged with the VLAN 5.
SHDSL
All frames coming from one of the SHDSL ports can enter the switch.
Untagged frames are tagged with the VLAN 12.