2-3
Cisco IP Telephony Solution Reference Network Design
956662
Chapter 2 Network Infrastructure
Table 2-1
Required Features for Each Role in the Network Infrastructure
Infrastructure Role
Required Features
Campus Access Switch
·
In-Line Power
·
Multiple Queue Support
·
802.1p and 802.1Q
·
Fast Link Convergence
Campus Distribution or Core Switch
·
Multiple Queue Support
·
802.1p and 802.1Q
·
Traffic Classification
·
Traffic Reclassification
WAN Aggregation Router
(Site that is at the hub of the
network)
·
Multiple Queue Support
·
Traffic Shaping
·
Link Fragmentation and Interleaving (LFI)
·
Link Efficiency
·
Traffic Classification
·
Traffic Reclassification
·
802.1p and 802.1Q
Branch Router
(Spoke site)
·
Multiple Queue Support
·
LFI
·
Link Efficiency
·
Traffic Classification
·
Traffic Reclassification
·
802.1p and 802.1Q
Branch or Smaller Site Switch
·
In-Line Power
·
Multiple Queue Support
·
802.1p and 802.1Q