VSC7440 datasheet(118/444 Pages) MICROSEMI

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Functional Descriptions

VMDS-10492 VSC7440 Datasheet Revision 4.2

101

NXT_KEY_TYPE

Enforces specific key type for next VCAP CLM lookup.

0: No overruling of default key type selection.

1: MLL

2: SGL_MLBS

3: DBL_MLBS

4: TRI_MLBS

5: TRI_VID or TRI_VID_IDX depending on configuration per

VCAP CLM lookup in

ANA_CL::CLM_KEY_CFG.CLM_TRI_VID_SEL

6: LL_FULL

7: NORMAL (with normal SRC information)

8: NORMAL with DST information

This is a modified version of NORMAL key type, where

- the frame’s DMAC is used in the L2_SMAC key field.

- the frame’s IPv4 DIP is used in the L3_IP4_SIP key field.

9: NORMAL_7TUPLE

10: NORMAL_5TUPLE_IP4

11: PURE_5TUPLE_IP4

12: CUSTOM1

13: CUSTOM2

14: CUSTOM4

15: CLMS_DONE

Complete - disable all remaining VCAP CLM lookups.

xxxx

NXT_NORM_W32_OFFSET

4-byte value to be added to frame pointer.

If any reserved MPLS labels were “skipped” during key

generation before VCAP CLM lookup, then these are not counted

in NXT_NORM_W32_OFFSET, because frame pointer is

automatically moved past "skipped" labels.

If both NXT_NORM_W32_OFFSET and

NXT_OFFSET_FROM_TYPE are specified, then frame pointer is

first modified based on NXT_OFFSET_FROM_TYPE and then

moved further based on NXT_NORM_W32_OFFSET.

NXT_NORM_W16_OFFSET

2-byte value to be added to frame pointer.

If any reserved MPLS labels were skipped during key generation

before VCAP CLM lookup, then these are not be counted in

NXT_NORM_W16_OFFSET, because frame pointer is

automatically moved past “skipped” labels.

If both NXT_NORM_W16_OFFSET and

NXT_OFFSET_FROM_TYPE are specified, then frame pointer is

first modified based on NXT_OFFSET_FROM_TYPE and then

moved further based on NXT_NORM_W16_OFFSET.

x x

Table 65 •

VCAP CLM Actions (continued)

Field Name

Description and Encoding

Size

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