Chapter 1 - Architecture Flashcards
What are the 3 tiers?
Core
Distribution
Access
What is the purpose of Core layer?
Speed
Redundancy
What is the purpose of the distribution layer?
Security
Policy
Routing
Load balancing
Redundancy
Summarization
What is the purpose of the Access layer?
Layer 2 switching
STP
PoE
Voice VLANs
QoS functions
Port security
VACLs
What is a collapsed core design (classic tier 2)?
Core / Distribution
Access
What are the advantages of Spine /leaf configuration?
Low Latency - Communicate through spine which is only one hop away
Load balancing
Overlay friendly
Easy to scale
What type of QoS is found at the access layer?
Classification
Marking
Which FHRP is an open standard?
VRRP
What are the 2 components make up the fabric n a SD design?
Underlay
Overlay
What do you need to consider when deploying WLC’s?
Placement of WLCs
AP to WLC connectivity
What does CAPWAP stand for?
Control and Provision of Wireless Access Points
What UDP ports are used for control & data channel?
Control - 5246
Data - 5247
What causes problems for QoS?
Lack of bandwidth
Latency
Variable latency (jitter)
propagation delay
serialization delay
processing delay
packet layer
What are the 3 types of QoS?
Best Effort (BE)
InterServ
DiffServ
How is diffServ implemented?
Classification & Marking
Classify close to the edge
Trust boundary
