VSC7511 datasheet(96/324 Pages) MICROSEMI

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Functional Descriptions

VMDS-10488 VSC7511 Datasheet Revision 4.2

•

IP6_OTHER: Up to 64 entries.

•

OAM: Up to 128 entries.

The following tables provide information about how the IS2 half keys are generated. The first table lists

the common fields between the half keys.

Table 46 •

IS2 Common Key Fields for Half keys

Field Name

Bit

Width

Description

Lookup Information

S2_TYPE_HALF

0: MAC ETYPE entries

1: MAC LLC entries

2: MAC SNAP entries

3: ARP entries

4: IPv4 TCP/UDP entries

5: IPv4 OTHER entries

6: IPv6 STD entries

7: OAM entries

(8: SMAC_SIP6 entries)

FIRST

Set for first lookup and cleared for second lookup.

Interface Information

PAG

Policy association group. Action from VCAP IS1.

IGR_PORT_MASK

Ingress port mask. VCAP generated with one bit set in

the mask corresponding to the ingress port.

Tagging and IP Source Guarding Information

RESERVED

Reserved. Must be set to don’t care.

HOST_MATCH

The action from the SMAC_SIP4 or SMAC_SIP6

lookups. Used for IP source guarding.

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).

VLAN_TAGGED

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

port VLAN awareness.

VID

Classified VID which is the result of the VLAN

classification in basic classification and IS1.

DEI

Classified DEI which is the final result of the VLAN

classification in basic classification and IS1.

PCP

Classified PCP which is the final result of the VLAN

classification in basic classification and IS1.

Table 47 •

IS2 MAC_ETYPE Key

Field Name

Bit

Width

Description

Layer-2 Information

L2_DMAC

Frame’s destination MAC address.

L2_SMAC

Frame’s source MAC address.

ETYPE

142

Frame’s EtherType. This is the EtherType after up to two

VLAN tags.

L2_PAYLOAD0

158

Payload bytes 0-1 after the frame’s EtherType.

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