| EAPS, Ethernet Automatic Protection Switching |
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Description | Glossary | RFCs | Publications | Obsolete RFCs |
| Protocol suite: | TCP/IP. |
| Protocol type: | Network layer protocol. |
| Ethertype: | 0x8100. |
| SNMP MIBs: | |
| Working groups: | |
| Links: |
| MAC header | EAPS header | Data ::: |
EAPS header, version 1:
| 00 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Destination MAC [0 .. 4] | |||||||||||||||||||||||||||||||||
| Destination MAC [5 .. 6] | Source MAC [0 .. 1] | ||||||||||||||||||||||||||||||||
| Source MAC [2 .. 5] | |||||||||||||||||||||||||||||||||
| Ethertype | PRI | VLAN ID | |||||||||||||||||||||||||||||||
| Frame length | DSAP | SSAP | |||||||||||||||||||||||||||||||
| Control | OUI | 0x00 | 0xBB | ||||||||||||||||||||||||||||||
| 0x99 | 0x0B | EAPS length | |||||||||||||||||||||||||||||||
| Version | Type | CTRL VLAN ID | |||||||||||||||||||||||||||||||
| 0x00 | 0x00 | 0x00 | 0x00 | ||||||||||||||||||||||||||||||
| System MAC [0 .. 3] | |||||||||||||||||||||||||||||||||
| System MAC [4 .. 5] | Hello timer | ||||||||||||||||||||||||||||||||
| Fail timer | State | 0x00 | |||||||||||||||||||||||||||||||
| Hello sequence | 0x00 | 0x00 | |||||||||||||||||||||||||||||||
| Reserved [0 .. 35] | |||||||||||||||||||||||||||||||||
Destination MAC.
6 bytes.
Always set to 0x00E02B000004.
Source MAC. 6 bytes.
Ethertype.
16 bits.
Always set to 0x8100.
PRI, Priority.
4 bits.
3 bits of priority with 1 bit reserved.
VLAN ID. 12 bits.
Frame length. 16 bits.
DSAP.
8 bits.
Always set to 0xAA.
SSAP.
8 bits.
Always set to 0xAA.
EAPS length. 16 bits.
Version.
8 bits.
EAPS version number.
Always set to 1.
Type. 8 bits.
| Type | Description |
|---|---|
| 0 - 4 | reserved. |
| 5 | HEALTH. |
| 6 | RING-UP-FLUSH-FDB. |
| 7 | RING-DOWN-FLUSH-FDB. |
| 8 | LINK-DOWN. |
| 9 - 255 | reserved. |
CTRL VLAN ID.
16 bits.
The VLAN ID for the Control VLAN in use.
System MAC.
6 bytes.
MAC Address of the sending node.
Hello timer.
16 bits.
Set by the Master Node.
Fail timer.
16 bits.
Set by the Master Node.
State. 8 bits.
| State | Description |
|---|---|
| 0 | IDLE. |
| 1 | COMPLETE. |
| 2 | FAILED. |
| 3 | LINK-UP. |
| 4 | LINK-DOWN. |
| 5 | PRE-FORWARDING. |
| 6 - 255 | reserved. |
Hello sequence.
16 bits.
Sequence number of the Hello Frame.
Reserved.
36 bytes.
Always cleared to 0.
RFCs:
[RFC 3619] Extreme Networks' Ethernet Automatic Protection Switching (EAPS) Version 1.
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Description | Glossary | RFCs | Publications | Obsolete RFCs |