Term |
Description |
|---|---|
FDB |
Forwarding database. A collection of entries for guiding data forwarding. There are Layer 2 FDB and Layer 3 FDB. The Layer 2 FDB refers to the MAC table, which provides information about MAC addresses and outbound interfaces and guides Layer 2 forwarding. The Layer 3 FDB refers to the ARP table, which provides information about IP addresses and outbound interfaces and guides Layer 3 forwarding. |
MSTP |
Multiple Spanning Tree Protocol. A new spanning tree protocol defined in IEEE 802.1s. MSTP uses the concepts of region and instance. Based on different requirements, MSTP divides a large network into regions where instances are created. These instances are mapped to VLANs. BPDUs with region and instance information are transmitted between bridges. A bridge determines which domain it belongs to based on the information carried in BPDUs. |
RSTP |
Rapid Spanning Tree Protocol. A protocol defined in IEEE 802.1w which is released in 2001. RSTP is the amendment and supplementation to STP, implementing rapid convergence. |
STP |
Spanning Tree Protocol (STP). A protocol defined in IEEE 802.1d which is released in 1998. This protocol is used to eliminate loops on a LAN. The devices running STP detect loops on the network by exchanging information with each other, and block specified interfaces to eliminate loops. |
Acronym and Abbreviation |
Full Name |
|---|---|
APS |
Auto Protection Switching |
ERPS |
Ethernet Ring Protection Switching |
FS |
forced switch |
MEL |
Maintenance Entity Group Level |
MS |
Manual Switch |
NR |
No Request |
NRRB |
No Request, RPL Blocked |
R-APS |
Ring Auto Protection Switching |
RPL |
Ring Protection Link |
SF |
Signal Fail |
WTB |
Wait To Block |
WTR |
Wait To Restore |