maple table: L2_MC
Details
- Name
- L2_MC
- Feature
- TABLE_ACCESS
- Type
- 0
- Entries
- 8192
- Data width
- 96
- Control register
- TBL_ACCESS_L2_CTRL
- Data register
- TBL_ACCESS_L2_DATA
Description
An L2 multicast entry.
L2 multicast entries are distinguished from unicast entries by the multicast bit in the MAC address being 1. This bit is the LSB of the first byte of the MAC address, meaning MC MAC addresses will start with ‘x1-xx-…’, ‘x3-xx-..’, etc.
Fields
| Name | LSB | Bits | Description |
|---|---|---|---|
| IP_MC | 86 | 1 |
Must be 0. |
| IP6_MC | 85 | 1 |
Must be 0. |
| MC_PMSK_IDX | 76 | 9 |
An index into MC_PMSK the port-mask the multicast entry is forwarded to. |
| VID | 64 | 12 |
|
| MAC | 12 | 48 |
A multicast MAC address (bit 0 of byte 0 is 1). |
| FID_RVID | 0 | 12 |
Forwarding ID or Relay VLAN ID used for forwarding as part of the hash-key. |