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Web-based Configuration Guide

AR650, AR1600, and AR6100 V300R003

This document describes how to configure and maintain your routers using the web platform.
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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
SA Interface

SA Interface

Context

NOTE:

The 1SA/2SA interface cards support serial interfaces. For the mapping between the device and interface card, see 1SA/2SA (1/2-Port-Synchronous/Asynchronous WAN Interface Card) in the Huawei AR650&AR1600&AR6100 Series Routers Get to Know the Product-Hardware Description-Cards-WAN Interface Card.

The 1SA/2SA interface cards support serial interfaces. For the mapping between the device and interface card, see 1SA(1-Port-Synchronous/Asynchronous WAN Interface Card), or 2SA(2-Port-Synchronous/Asynchronous WAN Interface Card), in the Huawei AR650&AR1600&AR6100 Series Routers Get to Know the Product-Hardware Description-Cards-Synchronous/Asynchronous Card.

Synchronous SA interfaces are used for enterprise branches to communicate with the headquarters through PPP links.

Procedure

  • Modifying SA interface configuration

    1. Choose WAN Access > SA Interface to display the SA Interface page. Figure 12-31 shows SA Interface page

      Figure 12-31  SA Interface Page

    2. Click corresponding to the SA interface to be configured in the Operation column of SA Interface List to display the modification page.

    3. Set the parameters described in Table 12-42.

    4. Click OK to complete the configuration.

    • Figure 12-32  Modify SA Interface (Protocol type is PPP)

    Table 12-42  Description of the SA interface parameters
    Parameter Description
    Interface name Type and number of an interface.
    Description Description of an interface.

    By default, the description of an interface is empty.

    Protocol type Link layer protocol of an SA interface.
    • PPP: indicates that the link layer protocol of an SA interface is PPP, as shown in Figure 12-32. For the description of PPP protocol parameters, see Table 12-43.
    Table 12-43  Description of the PPP protocol parameters
    Parameter Description
    User name

    User name of the device that functions as the authenticated party.

    Password

    Password of the device that functions as the authenticated party.

    Local address setting

    Mode in which an interface obtains an IP address.

    • Specified IP: indicates that an IP address is manually configured on the interface.
    • Auto: indicates that an IP address is obtained through PPP negotiation.
    IP address IP address of an interface.

    The interface IP address cannot conflict with the IP addresses of other interfaces on the device or other devices in the network.

    NOTE:

    This parameter is valid only when Local address setting is set to Specified IP.

    Subnet mask Subnet mask of an interface.
    NOTE:

    This parameter is valid only when Local address setting is set to Specified IP.

    Enable NAT NAT must be enabled when a PC on the private network of a LAN connects to the Internet.
    Remote address allocation Whether the local device assigns an IP address for the peer device.
    NOTE:

    This parameter is valid only when Local address setting is set to Specified IP.

    Remote address

    The IP address assigned by the local device for the remote device.

    NOTE:

    This parameter is valid only when Remote address allocation is set to Yes.

    Authentication mode (authenticator)

    Authentication mode of the device that functions as the authenticated party. PPP authentication can be performed on the device.

    • Non-authentication: indicates that PPP authentication is not performed on the device.
    • PAP: indicates that the PPP authentication mode is PAP.
    • CHAP: indicates that the PPP authentication mode is CHAP.
    TCP-MSS (bytes) MSS of TCP packets on an interface.

    The MSS refers to the maximum length of a TCP packet segment sent from the peer device to the local device. During TCP connection negotiation, devices at both ends record the MSS of each other. When sending TCP packets, the devices limit the size of TCP packets within the MSS.

    The default value of TCP-MSS is 1200.

    MTU (bytes) MTU of an interface.

    If the MTU is set too small and the size of packets is quite large, packets will be broken into a great number of fragments and be discarded by QoS queues. If the MTU is too large, packets are transmitted slowly or even lost.

    After modifying the interface MTU, you must restart the interface to make the MTU setting take effect.

    The default value of MTU is 1500.

  • Configuring the physical attributes and link layer attributes of an SA interface

    1. Choose WAN Access > SA Interface to display the SA Interface page.

    2. Click Configuration in the Attribution column of SA Interface List to display the page for configuring the SA interface attributes.

    3. Set the parameters described in Table 12-44 or Table 12-45.

    4. Click OK to complete the configuration.

    • Figure 12-33  SA Interface Attribute Configuration (DCE mode)

    • Figure 12-34  SA Interface Attribute Configuration (DTE mode)

    Table 12-44  Description of the SA interface's physical attributes and link layer attributes (DCE mode)
    Parameter Description
    Interface name Type and number of an interface.
    Description Description of an interface.

    By default, the interface description is "HUAWEI, AR Series, interface-type interface-number Interface."

    Working mode

    Working mode of an SA interface including DTE mode and DCE mode.

    Baudrate(bit/s)

    Baud rate of an SA interface.

    The baud rate can be set only when the device functions as the DCE.

    The baud rate range varies depending on the cable type.

    • V.24DTE/DCE: 1200 bit/s to 64000 bit/s
    • V.35DTE/DCE, X.21DTE, RS449DTE/DCE, and RS530DTE/DCE: 1200 bit/s to 2048000 bit/s
    Clock mode Clock mode for an SA interface on the DCE.
    • dceclk1: indicates that the clock mode of an SA interfac is set to dceclk1 on the DCE.
    • dceclk2: indicates that the clock mode of an SA interfac is set to dceclk2 on the DCE.
    • dceclk3: indicates that the clock mode of an SA interfac is set to dceclk3 on the DCE.
    Link code type Link code type of an SA interface.
    • NRZ: Non Return to Zero
    • NRZI: Non Return to Zero Inverted

    If two devices communicate using SA interfaces, the two devices must have the same encoding and decoding mode. Otherwise, received data frames will be decoded incorrectly and discarded as error frames.

    Link CRC type CRC mode of an SA interface.
    • 16: indicates that the 16-bit CRC is used for an SA interface.
    • 32: indicates that the 32-bit CRC is used for an SA interface.
    • none: indicates that CRC is not performed for an SA interface.

    The interfaces on both ends of a link must use the CRC of the same length. If lengths of the CRCs used on two ends are different, the two devices cannot communicate with each other.

    Link idle code Line idle code type of an SA interface.
    • 0x7E
    • 0xFF

    Two devices can communicate properly only when the same line idle code is set for the interfaces on both devices.

    Invert transmit clock

    Whether clock signals transmitted by an SA interface are inverted.

    Invert receive clock

    Whether clock signals received by an SA interface are inverted.

    Reverse RTS Whether RTS signals of an SA interface are inverted.
    Detect DSR & DTR Whether detection of DSR and DTR signals on an SA interface is enabled.
    Detect DCD Whether detection of DCD signals on an SA interface is enabled.
    Table 12-45  Description of the SA interface's physical attributes and link layer attributes (DTE mode)
    Parameter Description
    Interface name Type and number of an interface.
    Description Description of an interface.

    By default, the interface description is "HUAWEI, AR Series, interface-type interface-number Interface."

    Working mode

    Working mode of an SA interface including DTE mode and DCE mode.

    Virtual baudrate(bit/s)

    Virtual Baud rate of an SA interface.

    The virtua lbaud rate can be set only when the device functions as the DTE.

    NOTE:

    Ensure that the configured virtual baud rate is the same as that on the remote end (DCE). Otherwise, some packets will be discarded.

    Clock mode Clock mode for an SA interface on the DTE.
    • dteclk1: indicates that the clock mode of an SA interfac is set to dteclk1 on the DTE.
    • dteclk2: indicates that the clock mode of an SA interfac is set to dteclk2 on the DTE.
    • dteclk3: indicates that the clock mode of an SA interfac is set to dteclk3 on the DTE.
    Link code type Link code type of an SA interface.
    • NRZ: Non Return to Zero
    • NRZI: Non Return to Zero Inverted

    If two devices communicate using SA interfaces, the two devices must have the same encoding and decoding mode. Otherwise, received data frames will be decoded incorrectly and discarded as error frames.

    Link CRC type CRC mode of an SA interface.
    • 16: indicates that the 16-bit CRC is used for an E1 interface.
    • 32: indicates that the 32-bit CRC is used for an E1 interface.
    • none: indicates that CRC is not performed for an E1 interface.

    The interfaces on both ends of a link must use the CRC of the same length. If lengths of the CRCs used on two ends are different, the two devices cannot communicate with each other.

    Link idle code Line idle code type of an SA interface.
    • 0x7E
    • 0xFF

    Two devices can communicate properly only when the same line idle code is set for the interfaces on both devices.

    Invert transmit clock

    Whether clock signals transmitted by an SA interface are inverted.

    Invert receive clock

    Whether clock signals received by an SA interface are inverted.

    Reverse RTS Whether RTS signals of an SA interface are inverted.
    Detect DSR & DTR Whether detection of DSR and DTR signals on an SA interface is enabled.
    Detect DCD Whether detection of DCD signals on an SA interface is enabled.

  • Disabling an SA interface

    1. Choose WAN Access > SA Interface to display the SA Interface page.

    2. Click corresponding to the SA interface to be configured in the Operation column of SA Interface List.

    3. Click OK.

  • Enabling an SA interface

    1. Choose WAN Access > SA Interface to display the SA Interface page.

    2. Click corresponding to the SA interface to be configured in the Operation column of SA Interface List.

    3. Click OK.

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Updated: 2019-04-12

Document ID: EDOC1100041803

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