VSC7440 datasheet(113/444 Pages) MICROSEMI

113 / 444 page

Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

TC_LABEL

Selects which label provides the classified TC.

0: Use TC from LSE #0 (if available).

1: Use TC from LSE #1 (if available).

2: Use TC from LSE #2 (if available).

3: Do not update TC.

LSE #0 is top LSE, followed by LSE #1, and so on.

TTL_LABEL

Selects which label provides the classified TTL.

0: Use TTL from LSE #0 (if available).

1: Use TTL from LSE #1 (if available).

2: Use TTL from LSE #2 (if available).

3: Do not update TTL.

LSE #0 is top LSE, followed by LSE #1, and so on.

NUM_VLD_LABELS

Number of valid labels, without reserved labels. Position of

“deepest” label to be processed. Numbering starts with 0 at top

LSE. If reserved labels are “skipped”, then these are not counted

in NUM_VLD_LABELS. Valid range: 0-2.

Use of NUM_VLD_LABELS is dependent on FWD_TYPE as

follows:

FWD_TYPE=0: NUM_VLD_LABELS is not used.

FWD_TYPE=1: Position of PW label.

FWD_TYPE=2: Position of label to be swapped. LSEs above the

swap label are popped.

FWD_TYPE=3: Position of deepest label, which is to be popped.

FWD_TYPE

Forwarding type.

0: NONE

1: TERMINATE_PW - Terminate pseudo wire.

2: LBL_SWAP - Swap label

3: LBL_POP - Pop Labels

3: CTRL_PDU

4x x

FWD_TYPE: NONE

No MPLS termination, MPLS SWAP, or MPLS POP

FWD_TYPE: TERMINATE_PW

Terminate pseudo wire.

NXT_NORM_W16_OFFSET or NXT_NORM_W32_OFFSET

must be set to move frame pointer to CW/ACH if present, and

otherwise to the PDU that follows the MPLS label stack.

NUM_VLD_LABELS must be set to the position of the PW label.

NXT_TYPE_AFTER_OFFSET must be set to CW if PW uses

CW, otherwise ETH.

NXT_NORMALIZE must be set to 1 to have MPLS Link Layer,

LSEs and CW stripped.

MPLS_OAM_TYPE can be set to values 0-4 to disable/enable

OAM PDU detection.

Table 65 •

VCAP CLM Actions (continued)

Field Name

Description and Encoding

Size

VSC7440 датащи(PDF) 113 Page - Microsemi Corporation

VSC7440 датащи(HTML) 113 Page - Microsemi Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

датащи скачать

ссылки URL