MEDIATEK Ralink MT7620 - Page 257

PGMT7620_V.1.0_040503
Page 257 of 523
MT7620 PROGRAMMING GUIDE
Integrated 802.11n MAC/BBP and 2.4 GHz RF/FEM Router-on-a-Chip
Bits
Type
Name
Description
Initial Value
16
RW
UC_ARL_LKYV
Unicast Frame ARL Leaky VLAN Enable
1’b1: Use LEAKY_EN in ARL to control the
unicast frames
1’b0: Use PVC.UC_LKYV_EN in Port Control
register to control the unicast frames
0x0
15:8
-
-
Reserved
0x0
7:0
RW
GUEST_MEM
Guest VLAN Member
The assigned VLAN member for these frames
which can not pass 802.1x authentication.
0xFF
294. ISC: IGMP Snooping Control Register (offset: 0x0018)
Bits
Type
Name
Description
Initial Value
31:24
RO
LRN_RP
Learned Router Ports
Shows the router ports for IGMP/MDL
messages including the default and learned
ports.
0x7F
23:21
-
-
Reserved
0x0
20
RW
DWN_GRADE_EN
IGMP v2 to v1 Auto-Downgrade Enable
Enables an automatic downgrade from IGMPv2
to v1 due to a IGMPv1 report message.
1’b0: Disable
1’b1: Enable
0x0
19
RW
MLD_RP_EN
MLD Router Port Learning Enable
Enables automatic router port learning
automatically based on MLD queries.
1’b0: Disable
1’b1: Enable
0x0
18
RW
IGMP_RP_EN
IGMP Router Port Learning
Enables automatic router port learning based
on IGMP queries.
1’b0: Disable
1’b1: Enable
0x0
17:16
RW
ROBUST_VAR
Robustness Variable
Defines the maximum allowable number of
IGMP Query messages that may be lost
consecutively.
0: Reserved
1: One time
2: Two times (default)
3: Three times
0x2