Mstp regions, Multicast, Next hop – Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) User Manual
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Appendix B: Glossary
Software Reference for x310 Series Switches
B.18
AlliedWare Plus
TM
Operating System - Version 5.4.4C
C613-50046-01 REV A
MSTP regions
An MST region is a set of interconnected switches that all have the same values for the
following MST configuration identification elements:
■
MST configuration name - the name of the MST region.
■
Revision level - the revision number of configuration.
■
Configuration Digest - the mapping of which VLANs are mapped to which MST
instances.
Each of the MST instances created are identified by an
number. This number is
locally significant within the MST region. Therefore, an MSTI will not span across MST
regions.
For more information see
Multicast
One device sends out data that is intended to be received and processed by a selected
group of the devices it reaches.
N
NAC
Network Access Control. NAC provides unprecedented control over user access to the
network in order to mitigate threats to network infrastructure. NAC uses
port-
based authentication with standards-compliant dynamic VLAN assignment, to assess a
user’s adherence to the network’s security policies, and either grant authentication or offer
remediation. NAC also supports alternatives to 802.1x port-based authentication, such as
to enable guest access, and
for end points
that do not have an 802.1x supplicant. Furthermore, if multiple users share a port then
multi-authentication can be used and a
can be configured to provide a
catch-all for users without an 802.1x supplicant.
For more information see
Chapter 40, 802.1X Introduction and Configuration
and
Chapter 42, Authentication Introduction and Configuration
NAS
Network Access Server. A NAS is a single point of access to a remote resource. The client
connects to the NAS. The NAS then connects to another resource asking whether the
client's supplied credentials are valid. Based on that answer the NAS then allows or
disallows access to the resource. The NAS contains no information about what resources
clients can connect to or what client credentials are valid. The NAS sends the credentials
the client supplied to a resource which then validates the client.
Next hop
IP routing involves forwarding packets from one router to the next, until they reach their
destination. Routers do not need to know the full path to a packet’s destination, they just
need to know the next router to forward the packet on to. This ‘next router’ is referred to
as the next hop of an IP route.