longan table: L3_EGR_INTF
Details
- Name
- L3_EGR_INTF
- Feature
- LAYER_3_ROUTING
- Type
- 4
- Entries
- 128
- Data width
- 64
- Control register
- TBL_ACCESS_CTRL_1
- Data register
- TBL_ACCESS_DATA_1
Description
Defines an Egress Interface for L3 routing
Allows to define the source MAC for an egress interface as an index into the SoC’s L3_ROUTER_MAC table of Source MACs and with an MTU from the list of MTUs stored in L3_IP_MTU_CTRL registers. Routing actions depending on the type of traffic are defined:
- 0: TRAP2CPU
- 1: DROP
- 2: FORWARD
- 3: COPY2CPU
- 4: TRAP2MASTERCPU
- 5: COPY2MASTERCPU
Where the master CPU is the master CPU in the stacked switches.
Fields
| Name | LSB | Bits | Description |
|---|---|---|---|
| DST_VID | 41 | 12 |
Destination VLAN ID Probably this VLAN-ID is assigned to the outgoing packet. It is unclear whether this still is subject to e.g. be dropped because of VLAN rules for the egress port. |
| SMAC_IDX | 35 | 6 |
Index into the last 64 entries of L3_EGR_INTF_MAC. This MAC will be inserted as source MAC into the routed packet. |
| IP_MTU_IDX | 32 | 3 |
Index into the L3_IP_MTU_CTRL(x) registers defining an IPv4 MTU |
| IP6_MTU_IDX | 28 | 3 |
Index into the L3_IP6_MTU_CTRL(x) registers defining an IPv6 MTU. |
| IPMC_TTL_SCOPE | 20 | 8 |
Appears to be the TTL subtracted for this route |
| IP6MC_HL_SCOPE | 12 | 8 |
Appears to be IPv6 Hop Limit subtracted for this route |
| IP_ICMP_REDIRECT_ACT | 9 | 3 |
Action when routing ICMP traffic See the generic list of actions for this table. |
| IP6_ICMP_REDIRECT_ACT | 6 | 3 |
Action when routing IPv6 ICMP traffic See the generic list of actions for this table. |
| IP_PBR_ICMP_REDIRECT_ACT | 3 | 3 |
Action when routing IPv4 ICMP traffic (Policy Based Routing) See the generic list of actions for this table. |
| IP6_PBR_ICMP_REDIRECT_ACT | 0 | 3 |
Action when routing IPv6 ICMP traffic (Policy Based Routing) See the generic list of actions for this table. |