switchport nonegotiate
To specify that Dynamic Trunking Protocol (DTP) negotiation packets are not sent on the Layer 2 interface,
use the
switchport nonegotiate
command in interface configuration mode. Use the
no
form of this command
to return to the default setting.
switchport nonegotiate
no switchport nonegotiate
Syntax Description
This command has no arguments or keywords.
Command Default
The default is to use DTP negotiation to learn the trunking status.
Command Modes
Interface configuration
Command History
Modification
Release
This command was introduced.
Cisco IOS XE 3.3SECisco IOS XE 3.3SE
Usage Guidelines
The
no switchport nonegotiate
command removes nonegotiate status.
This command is valid only when the interface switchport mode is access or trunk (configured by using the
switchport mode access
or the
switchport mode trunk
interface configuration command). This command
returns an error if you attempt to execute it in dynamic (auto or desirable) mode.
Internetworking devices that do not support DTP might forward DTP frames improperly and cause
misconfigurations. To avoid this problem, turn off DTP by using the
switchport nonegotiate
command to
configure the interfaces connected to devices that do not support DTP to not forward DTP frames.
When you enter the
switchport nonegotiate
command, DTP negotiation packets are not sent on the interface.
The device does or does not trunk according to the
mode
parameter:
access
or
trunk.
•
If you do not intend to trunk across those links, use the
switchport mode access
interface configuration
command to disable trunking.
•
To enable trunking on a device that does not support DTP, use the
switchport mode trunk
and
switchport
nonegotiate
interface configuration commands to cause the interface to become a trunk but to not
generate DTP frames.
Examples
This example shows how to cause a port to refrain from negotiating trunking mode and to act as a trunk or
access port (depending on the mode set):
Device(config)#
interface gigabitethernet2/0/1
Device(config-if)#
switchport nonegotiate
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
363
switchport nonegotiate
Summary of Contents for Catalyst 3650 Series
Page 2: ... 2017 Cisco Systems Inc All rights reserved ...
Page 37: ...P A R T I Campus Fabric Campus Fabric page 13 ...
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Page 51: ...P A R T II Interface and Hardware Components Interface and Hardware Commands page 27 ...
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Page 165: ...P A R T III IP IP page 141 ...
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Page 235: ...P A R T IV IP Multicast Routing IP Multicast Routing page 211 ...
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Page 303: ...P A R T V IPv6 IPv6 page 279 ...
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Page 307: ...P A R T VI Layer 2 3 Layer 2 3 page 283 ...
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Page 399: ...P A R T VII Multiprotocol Label Switching MPLS MPLS page 375 Multicast VPN page 385 ...
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Page 429: ...P A R T VIII Network Management Flexible NetFlow page 405 Network Management page 479 ...
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Page 595: ...P A R T IX Programmability Programmability page 571 ...
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Page 624: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 598 ping6 ...
Page 625: ...P A R T X QoS Auto QoS page 601 QoS page 641 ...
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Page 666: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 640 show auto qos ...
Page 706: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 680 trust device ...
Page 707: ...P A R T XI Routing Bidirectional Forwarding Detection page 683 ...
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Page 725: ...P A R T XII Security Security page 701 ...
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Page 875: ...P A R T XIII Stack Manager and High Availability Stack Manager and High Availability page 851 ...
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Page 1027: ...P A R T XV VLAN VLAN page 1003 ...
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Page 1100: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 1074 vtp primary ...
Page 1102: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches 1076 Notices ...
Page 1108: ...Command Reference Cisco IOS XE Everest 16 5 1a Catalyst 3650 Switches IN 6 Index ...