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NOS Acronym List

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TitleNOS Acronym List
Question
The following list shows many of the most popular Acronyms used in the NOS environment and the basic definition of each.
Environment
Answer

AF

Address Family - Used with multi-protocol BGP extensions

AF

Appointed Forwarder

Selected by the DRB, each VLAN has one AF

(Note that AF is also a DSCP Assured Forwarding PHB as defined by RFC 4594)

AMPP

Automatic Migration of Port Profile

Automatic apply policies and networking parameters when VMs are provisioned dynamically

ARP

Address Resolution Protocol

ASN

Autonomous System Number - BGP attribute/metric

BFD

Bidirectional Forwarding Detection - RFC 5880

BGP

Border Gateway Protocol

BL

Border-Leaf

BLDP

Brocade Link Discovery Protocol also know as FLDP

BPQ

Blade Port Queue (Queue that holds packets waiting to get to the CPU)

BUM

Broadcast Unicast and Multicast

CEE

Converged Enhanced Ethernet

CAN

Converged Network Adapter

CLI

Command Line Interface - implemented via the 'noscli' shell program.

Cluster

This refers to the CCMD cluster that is build on top of the fabric and allows configuration distribution. It is a separate service that runs on top of fabric

CRPV

Cluster Root Priority Vector - STPoVCS - Best of all NRPV's in the cluster

CTAG

Customer VLAN ID

DCBX

Data Center Bridging Exchange

Uses 802.1AB Link Level Discovery Protocol (LLDP) extensions

DCI

Data Center Interconnect

DCS

Data Center Site

DD

Discovery Domain - iSNS

DDS

Discovery domain Service - iSNS

DIA

Domain Id Assignment

DPOD

Dynamic Ports On Demand

DRB

Designated Root Bridge - Multicast root

eBGP

Exterior Border Gateway Protocol - BGP peering between two ASN

ECB

Egress Congestion Control Block (8770)

ECMP

Equal Cost Multi-Path - load sharing for Layer 2or Layer 3 traffic

EF

Ethernet Fabric

(Note that EF is also a DSCP Express Forwarding PHB as defined by RFC 5865)

ELD

Edge Loop Detection

ELP

Exchange Link Parameters (LR/LRR)

EMC

Ethernet MAC - Wolverine ASIC TX block , Frame Edit

EME

Egress Multicast Expansion

eACL

Egreess ACL Block

eNS

Ethernet Name Service

EQS

Egress Queue Scheduler

ESM

Egress Switch Memory. Include RXF and TXF (8770)

ESS

Exchange Switch Support - a fiber channel service supporting the formation of fabric

ETS

Enhanced Transmission Selection (802.1Qaz)

Assigns Traffic Class Groups to a % of Bandwidth

Incorporates DCBX to exchange policy between fabric enabled switches

EVB

Edge Virtual Bridging

(AAMP belongs under the IEEE emerging standard under 802.1 work group)

EVPN

Ethernet Virtual Private Networks - BGP address family extension

FA

Fabric Adapter combines Host Bus Adapter and Converged Network Adapter capability

Fabric

This refers to the collective set of protocols that allows a grouping of VCS swtiches to be connected and taling. It does not inlucde VCS slustering.

FC

Fiber Channel

FC

Fabric Cluster Mode Pre NOS 4.0 as vs. to MC mode

FCF

FCoE Forwarder FCoE switch with CEE ports and possibly FC ports

FCoE

Fiber Channel over Ethernet

FDB

Filtering Database

FDSd

Fabric Distribution Service daemon (Implemented in NOS v2.1.0 or higher)

FFDC

First Fault Data Capture

FIP

FCoE Initialization Protocol

FLDP

Fabric Link Discovery Protocol also known as BLDP

FLOGI

Fabric Login

FPMA

Fabric Provided MAC Address

FSB

FIP Snooping Bridge

FSPF

Fabric Shortest Path First

Routing protocol used in Fiber Channel Networks

FSS

FABOS State Synchronization - FSS is a framework for High Availabilitystate replication and application health monitoring.

GOS

Guest Operating System

GR

Graceful restart

GVLAN

Global VLAN

HBA

Host Bus Adapter

HMC

Hawk-side MAC - Wolverine ASIC block that receives frames from Hawk ASIC

HSL

Hardware Services Layer

HSQ

Hawk-side Re-sequencer

IME

Ingress Multicast Expansion

iBGP

Interior Border Gateway Protocol - BGP peering within the same ASN

IMR

Inclusive Multicast Route

IP

Internet Protocol

IRB

Integrated Routing and Bridging

iSCSI

Internet Small Computer System Interface

ISL

Inter-Switch Link

Fabric ports connected between VCS enabled switches

iSNS

Internet Storage Name Service

ISSU

In Service Software Upgrade

IVID

Internal VLAN ID

LAN

Local Area Network

LDP

Label Distribution Protocol - BGP signaling exchange of MPLS label mapping information

LAG

Link Aggregation Group

LC

Line Card

LC

Logical Chassis ore Management Cluster(MC) on NOS 4.0+

LLDP

Link Layer Discovery Protocol

LSP

Label Switched Path - Path through an MPLS network

LST

Link State Tracking

MAC

Media Access Control - L2 addressing

MC

Logical Chassis (aka Management Cluster) NOS 4.0+ as vs. to FC mode

MCE

Multicast Expansion

MGID

Multicast Group ID

MQC

Modular QoS CLI

ND

IPv6 Neighbor Discovery Protocol

MM

Management Module

MPLS

Multi-Protocol Label Switching

NRPV

Node Root Priority Vector - STPoVCS - Best of all the local ports in an RBRdige. NRPV is the spanning tree information from the port which can become the spanning-tree ROOT port in the particular bridge.

NSF

Non Stop Forwarding - Layer 2 High Availability

NSR

Non Stop Routing - Layer 3High Availability

OOB

Out Of Band - Management Ethernet port eth0

PFC

Priority based Flow Control (802.1Qbb)

PGID

Priority Group ID

POL

Policer Block

PRG

Port-channel Redundancy Group

PVID

Port Default VLAN ID

QCN

802.1Qau Congestion Notification

QSFP

Quad Small Form-factor Pluggable

RA

IPv6 rouer Advertisement Protocol

RAS

Reliability, Availability, Serviceability

RBAC

Role Based Access Control

Rbridge

Routing Bridge

RD

Route Distinguisher - MPLS label

RDI

Request for Domain Id

RRD

Rolling Reboot Detection

RT

Route Target - MPLS label

RXF

Receive FIFO

SA

Stand Alone Mode vs. Fabric Mode (either FC or MC)

SCN

State Change Notification

SPMA

Server Provided MAC Address

STAG

Service VLAN ID

TC

Traffic Class

TCN

Topology Change Notification (Spanning tree BPDU indicating a topology change)

TOR

Top of Rack

TRILL

Transparent Interconnection of Lots of Links

TRL

Target Rate Limiting Same as FC TRL release 1.x and has been extended to FCoE

TXF

Transmit FIFO

UDP

User Datagram Protocol - Common transport protocol

USF

Unified Storage Fabric - iSNS

VE

Virtual Ethernet - Virtual Layer 3Switched Virtual Interface

VEB

Virtual Ethernet Bridge

VCS

Virtual Cluster Switching

VF

Virtual Fabric

VFID

Virtual Fabric ID

VFG

Virtual Fabric Gateway

VIP

Virtual IP address

vLAG

Virtual Link Aggregation Group

VLAN

Virtual Local Area Network - 802.1q tagging

VM

Virtual Machine

VNI

VXLAN Network Identifier (24 bit network address)

VRF

Virtual Routing and Forwarding

VRID

Virtual Router ID - Virtual MAC for VRRP

SAN

Storage Area Network

VSID

Virtual System ID (NOS v2.0.x=Virtual MAC; NOS v2.1.x=Actual MAC)

VTEP

VXLAN Tunnel End Point

VXLAN

Virtual Extensible Local Area Network

WAN

Wide Area Network

Additional notes

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