VSC7511 datasheet(84/324 Pages) MICROSEMI

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Functional Descriptions

VMDS-10488 VSC7511 Datasheet Revision 4.2

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 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_TAGGED 29

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.

Table 39 •

Specific Fields for IS1 Half Key S1_NORMAL

Field Name

Bit

Width

Description

Layer-2 Information

L2_SMAC

Frame’s source MAC address.

Use destination MAC address if VCAP_CFG.S1_DMAC_DIP_ENA

is set for ingress port.

ETYPE_LEN

Frame type flag.

Set if frame has EtherType >= 0x600 (Frame is type encoded).

Otherwise cleared (Frame is length encoded).

Table 38 •

IS1 Common Key Fields for Half keys (continued)

Field Name

Bit Width

Description

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