VSC7511 datasheet(82/324 Pages) MICROSEMI

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Functional Descriptions

VMDS-10488 VSC7511 Datasheet Revision 4.2

The following table provides information about how the quad key, S1_DBL_VID is generated.

Table 37 •

Specific Fields for IS1 Quad Key S1_DBL_VID

Field Name

Bit

Width Description

Lookup Information

LOOKUP

0: First lookup

1: Second lookup

2: Third lookup

Interface and Miscellaneous Information

IGR_PORT_MASK

Ingress port mask. VCAP generated with one bit set in the

mask corresponding to the ingress port.

RESERVED

Reserved. Must be set to don’t care.

OAM_Y1731

Set if frame is a Y.1731 OAM frame with EtherType = 0x8902.

L2_MC

Set if frame’s destination MAC address is a multicast address

(bit 40 = 1)

L2_BC

Set if frame’s destination MAC address is the broadcast

address (FF-FF-FF-FF-FF-FF)

IP_MC

Set if frame is IPv4 frame and frame’s destination MAC

address is an IPv4 multicast address (0x01005E0 /25).

Set if frame is IPv6 frame and frame’s destination MAC

address is an IPv6 multicast address (0x3333/16).

Tagging Information

VLAN_TAGGED

Set if frame has one or more Q-tags. Independent of port

VLAN awareness.

VLAN_DBL_TAGGE

Set if frame has two or more Q-tags. Independent of port

VLAN awareness.

TPID

0: Customer TPID

1: Service TPID (88A8 or programmable).

S1_NORMAL: TPID is derived from tag pointed to by

VCAP_CFG.S1_VLAN_INNER_TAG_ENA.

VID

Frame’s VID if frame is tagged, otherwise port default.

S1_NORMAL: VID is taken from tag pointed to by

VCAP_CFG.S1_VLAN_INNER_TAG_ENA.

DEI

Frame’s DEI if frame is tagged, otherwise port default.

S1_NORMAL: DEI is taken from tag pointed to by

VCAP_CFG.S1_VLAN_INNER_TAG_ENA.

PCP

Frame’s PCP if frame is tagged, otherwise port default.

S1_NORMAL: PCP is taken from tag pointed to by

VCAP_CFG.S1_VLAN_INNER_TAG_ENA.

INNER_TPID

TPID for inner tag:

0: Customer TPID.

1: Service TPID (88A8 or programmable).

INNER_VID

Frame’s inner VID if frame is double tagged.

INNER_DEI

Frame’s inner DEI if frame is double tagged.

INNER_PCP

Frame’s inner PCP if frame is double tagged.

Layer 2 Information

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