Cisco Catalyst 3850, Руководство пользователя

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Ease of Deployment
LAN Access Switch Topology
2
Best Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series
LAN Access Switch Topology
The workflows described in this document assume that a switch is deployed as a LAN access switch.
Unless noted otherwise, a switch that is in the LAN access layer is configured as a Layer 2 switch, with
all Layer 3 services provided by the directly connected distribution switch or router.
This document assumes that the switches are stacked together to form a switch stack (a common
switching unit). We recommend that you use switch stacks because of built-in redundancy. We also
recommend the use of using switch stacks when deploying switches in converged access mode (wireless
mode) and connecting access points to different stack members.
A switch deployed at the LAN access layer provides high-bandwidth connections to devices through
10/100/1000 Ethernet, with both Gigabit and 10-Gigabit uplink connectivity options.
When a switch is deployed in access mode, it enables end devices, such as IP phones, wireless access
points, and desktops to gain access to the network. The Power over Ethernet (PoE) switch models
support PoE+ (30 W) and UPoE (60 W) to power IP phones, wireless access points, and IP cameras. The
field-replaceable uplink module from the switch enables different uplink connectivity types.
Figure 1 shows an enterprise campus deployment, where the switch is connected to a distribution layer
switch (such as a Catalyst 6500,6800,4500 or a Nexus 7000 switch).
Figure 1 LAN Access Switch Topology with Distribution Switch
set system location Building 1, San Jose, CA
Dual redundant switches
in distribution layer running
VSS (Cat6500/6800/4500),
or VPC (Nexus 7000)
Desktop user
direct connect
Desktop user
Printer
Wireless access
Catalyst 3850 stack in access
Voice VLAN 11
Data VLAN 10
Data VLAN 10
Data VLAN 10
Switch management
VLAN 100
Access point VLAN 12
391637
Trunk link
Native VLAN 999
All VLANs included