2960 will not allow "switchport trunk encapsulation dot1q" CLI
I have a Cisco 2960 switch that does not allow me to configure the switchport trunk encapsulation dot1q on a trunking interface.
The features of the watch that the interface can use 802. 1 q, but when I try to CLI the command encapsulation of work is not an option.
Please give us a solution.
Thank you, S
Model - WS-C2960G-24TC-L
Version SW - 12.2 (44) SE6
Image of SW - C2960-LANBASEK9-M
S1 #.
S1 #sh int gi0/23 capabilities
GigabitEthernet0/23
Model: WS-C2960G-24TC-L
Type: 1000BaseLX SFP
Speed: 1000
Duplex: full
ENCAP of trunk. type: 802. 1 q
Trunk mode: on, off, desirable, nonegotiate
Channel: Yes
Removal of broadcast: percentage(0-100)
FlowControl: rx-(off,on,desired), tx-(none)
Fast Start: Yes
QoS scheduling: rx-(not configurable on a per port basis),
TX-(4q3t) (3T: two configurable values and one fixed.)
Rewrite coS: Yes
ToS rewrite: Yes
UNI-DIRECTIONAL: Yes
Food online: no
SPAN: source/destination
PortSecure: Yes
Dot1x: Yes
Several Types of media: rj45, sfp, automatic selection
S1 #.
S1 #.
S1 #.
S1(Config-if) #switchport?
Set the access mode characteristic of the interface
Backup set for the backup interface
block disable them unknown addresses forwarding uni/multi interpreters
host port Set
the interface Set trunking mode
nonegotiate device engage not in the negotiation protocol on this
interface
port-security security associated with order
priority Set 802 .1p device priority
protected configure an interface to be a protected Harbor
trunk trunking features Set of interface
device attributes voice voice
S1 #.
S1 #.
S1 #.
S1(Config-if) #switchport trunk?
admitted only allowed together features VLAN when the interface is in binding mode
native definition trunking features native when the interface is trunking
mode
pruning pruning Set VLAN features when the interface is in binding mode
S1 #.
S1 #.
S1 #.
New devices do not support ISL so you can run 802. 1 q. This means there is no need of an encapsulation command what an encapsulation being supported. If the device has support for ISL, then you must also this command.
Daniel Dib
CCIE #37149
Please evaluate the useful messages.
Tags: Cisco Network
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