Specifications

Access Layer April 2014
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Step 3: Save the running configuration that you have entered so it will be used as the startup configuration file
when your switch is reloaded or power-cycled.
copy running-config startup-config
Step 4: If you have configured your access layer Cisco Catalyst 2960-S or Cisco Catalyst 3750-X switch stack
for EtherChannel to the WAN router, reload your switch stack now to ensure proper operation of EtherChannel. A
single reload of a newly configured switch is necessary to ensure that EtherChannel operates with other features
configured on the switch stack.
reload
Example: Procedure 5, Option 1
2099
VLAN 100
Data VL
AN
VLAN 101
Voice VLAN
VLAN 115
Management
VLAN
LAN
Distribution
Switch
802.1Q Trunk
VLANs 100,101,115
Native VLAN 999
vlan 999
name AntiVLANhopping
!
interface GigabitEthernet 1/0/25
description Link to Distribution Layer port 1
interface GigabitEthernet 3/0/25
description Link to Distribution Layer port 2
interface GigabitEthernet 1/0/26
description Link to Distribution Layer port 3
interface GigabitEthernet 3/0/26
description Link to Distribution Layer port 4
!
interface range GigabitEthernet 1/0/25, GigabitEthernet 3/0/25, GigabitEthernet
1/0/26, GigabitEthernet 3/0/26
macro apply EgressQoS
logging event link-status
logging event trunk-status
logging event bundle-status
channel-protocol lacp
channel-group 1 mode active
!
interface Port-channel 1
description Etherchannel to Distribution Layer
switchport trunk encapsulation dot1q
switchport trunk native vlan 999
switchport trunk allowed vlan 100,101,115
switchport mode trunk
ip arp inspection trust
ip dhcp snooping trust
no shutdown