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ข้อมูลเกี่ยวกับการทำ encapsulation แบบต่างๆ (cisco)

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Athena_Shield

� �
อ้างจาก: Cisco IOS Interface and Hardware Component Command Reference (D - H)

� �encapsulation

� �To set the encapsulation method used by the interface, use the encapsulation command
� �in interface configuration mode. To remove the encapsulation, use the no form of this command.

� �encapsulation encapsulation-type

� �no encapsulation encapsulation-type


� �Syntax Description

� � encapsulation-type � �

� � Encapsulation type; one of the following keywords:

 �� � � � � �• atm-dxi—ATM Mode-Data Exchange Interface.

 � � �� � � �• bstun—Block Serial Tunnel.

 � � � �� � �• dot1q vlan-id [native]—Enables IEEE 802.1q encapsulation of traffic on a specified subinterface
� �� �� � � � �in VLANs. The vlan-id argument is a virtual LAN identifier. The valid range is from 1 to 1000.
 �� � � � � � �The optional native keyword sets the PVID value of the port to the vlan-id value.

 � � �� � � �• frame-relay—Frame Relay (for serial interface).

� � � � � � �• hdlc—High-Level Data Link Control (HDLC) protocol for serial interface.
 �� � � � � �� This encapsulation method provides the synchronous framing and error detection
 � �� ��� � � �functions of HDLC without windowing or retransmission. This is the default for
� � � �� �� � �synchronous serial interfaces.

 �� � � � � �• isl vlan-id—Inter-Switch Link (ISL) (for VLANs).
� �
 �� � � � � �• lapb—X.25 Link Access Procedure, Balanced. Data link layer protocol
 � � �� � � �� (LAPB) DTE operation (for serial interface).

� � � � � � �• ppp—PPP (for serial interface).

 �� � � � � �• sde said—IEEE 802.10. The said argument is a security association identifier.
 � � �� � �� ��This value is used as the VLAN identifier. The valid range is from 0 to 0xFFFFFFFE.

� � � � � � �• sdlc—IBM serial Systems Network Architecture (SNA).

 �� � � � � �• sdlc-primary—IBM serial SNA (for primary serial interface).

 � � �� � � �• sdlc-secondary—IBM serial SNA (for secondary serial interface).

� � � � � � �• slip—Specifies Serial Line Internet Protocol (SLIP) encapsulation for an
 �� � � � � �� �interface configured for dedicated asynchronous mode or dial-on-demand
� � � � �� � � �routing (DDR). This is the default for asynchronous interfaces.

 � � � �� � �• smds—Switched Multimegabit Data Services (SMDS) (for serial interface).

� � � � � � �• ss7—Sets the encapsulation type to SS7 and overrides the serial interface objects
� � � � � � � �high-level data link control (HDLC) default.
 

� �Defaults

� �The default depends on the type of interface.

� � For example,

 
  • synchronous serial interfaces default to HDLC and
  • asynchronous interfaces default to SLIP.


� �Command Modes :� Interface configuration

� �Command History :�

� � � �Release� Modification

� � � � � � � �10.0 � � �- �This command was introduced.
 
� � � � � � � �10.3 � � �- The sde keyword was added to support IEEE 802.10
 
� � � � � � � �11.1 � � �- �The isl keyword was added to support the Interswitch Link (ISL)
� � � � �� � � � � �� � � � � Cisco protocol for interconnecting multiple switches and routers,
� � � � �� �� � � � �� �� � � and for defining virtual LAN (VLAN) topologies.
 
� � � � � � � �11.3(4)T - �The tr-isl trbrf-vlan keyword was added to support TRISL,
� � � � � � �� � � � � �� ��� �a Cisco proprietary protocol for interconnecting multiple routers
� � � � � � �� � � � � � �� �� and switches and maintaining VLAN information as traffic goes
� �� � �� � �� � � � � � � �� �between switches.
 
� � � � � � � �12.0(1)T - �The dot1q keyword was added to support IEEE 8021q standard
 � � ��� � � � � � � � � � � � � for encapsulation of traffic on a specified subinterface in VLANs.
 
� � � � � � � �12.1(3)T - �The native keyword was added.
 
� � � � � � � �12.2(11)T - �This command was modified to include the ss7 keyword in support
� � � � � � � � � � � � � � � � � of integrated signaling link terminal capabilities.
 
� � � � � � � �12.3(1) �- �The tr-isl trbrf-vlan keyword was removed because support
 � � �� � � � � � � � � � � � �for the TRISL protocol is no longer available in Cisco IOS software.

 



ข้อมูลเพิ่มเติม

Cisco IOS Interface and Hardware Component Command Reference, Release 12.3
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/inter_r/index.htm



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