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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).
CE1/CT1 Interface

CE1/CT1 Interface

Context

NOTE:
  • The 1E1/T1-M, 2E1/T1-M, 4E1/T1-M, and 8E1/T1-M interface cards support CE1/PRI interfaces. For the mapping between the device and interface card, see Channelized E1/T1/PRI/VE1 Multiflex Trunk Interface Card in the Huawei AR650&AR1600&AR6100 Series Routers Get to Know the Product-Hardware Description-Cards-E1/T1 Card.

  • The 1E1/T1-M and 2E1/T1-M interface cards support CT1/PRI interfaces. For the mapping between the device and interface card, see Channelized E1/T1/PRI/VE1 Multiflex Trunk Interface Card in the Huawei AR650&AR1600&AR6100 Series Routers Get to Know the Product-Hardware Description-Cards-E1/T1 Card.

A CE1/CT1 interface is a physical interface in the E1/T1 system, which can transmit voice, data, and video service packets.

Procedure

  • Modifying CE1/CT1 interface configuration

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page. Figure 12-35 shows CE1 Interface page and CT1 Interface page.

      Figure 12-35  CE1 Interface Page

      Figure 12-36  CT1 Interface Page

    2. Click corresponding to the CE1 or CT1 interface to be configured in the Operation column of CE1 Interface List or CT1 Interface List to display the modification page.

    3. Set the parameters described in Table 12-46.

    4. Click OK to complete the configuration.

    • Figure 12-37  Modify CE1 Interface

    • Figure 12-38  Modify CT1 Interface

    Table 12-46  Description of the CE1/CT1 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.

    Working mode Working mode of a CE1 interface.
    • CE1: indicates that a CE1 interface works in CE1 mode.
    • E1: indicates that a CE1 interface works in E1 mode.
    serial Serial number of the specified channel when a CE1/CT1 interface works in CE1/CT1 mode.
    Timeslot Timeslot of the channel after the channel number is specified.
    NOTE:

    To create a channel, click Add.

    After the CE1/CT1 interface configuration is complete, the system creates one or multipul serial interfaces whose logical features are the same as those of a synchronous serial interface.

  • Configuring the physical attributes and link layer attributes of a CE1/CT1 interface

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

    2. Click Configure Interface Attribution in the Interface Attribution column of CE1 Interface List or CT1 Interface List to display the interface attribute configuration page.

    3. Set the parameters.

      • For the physical attributes and link layer attributes of a CE1 interface, see Table 12-47.
      • For the physical attributes and link layer attributes of a CT1 interface, see Table 12-48.
    4. Click OK to complete the configuration.

    • Figure 12-39  Configure CE1 Interface Attributes

    • Figure 12-40  Configure CT1 Interface Attributes

    Table 12-47  Description of the CE1 interface's physical attributes and link layer attributes
    Parameter Description

    Cable type

    Cable type applicable to a CE1 interface.

    • 120-ohm: indicates that a CE1 interface connects to a 120 ohm balanced cable (twisted pair).
    • 75-ohm: indicates that a CE1 interface connects to a 75 ohm non-balanced cable (coaxial cable).
    Clock mode Clock mode of a CE1 interface.
    • Master: indicates the master clock mode (internal clock mode).
    • Slave: indicates the slave clock mode (line clock mode).
    • System: indicates the system clock mode.
      NOTE:

      This parameter takes effect only when it is configured on interfaces of the 4E1T1-M/8E1T1-M interface card.

    When two routers are directly connected using two CE1 interfaces, one CE1 interface must work in master clock mode and the other must work in slave clock mode.

    When the MPU on the router obtains the clock with high accuracy from the upstream device and the router needs to synchronize the clock to downstream device, the interface on the router must be configured to work in system clock mode. Moreover, the interface on the downstream device must be configured to work in slave clock mode.

    Frame format Frame format of a CE1 interface.
    • CRC4: indicates the CRC4 frame format.
    • NO-CRC4: indicates the non-CRC4 frame format (basic frame format).

    Two devices can communicate properly only when the same frame format is set for the interfaces on both devices. Otherwise, a CRC4 alarm is generated.

    NOTE:

    This attribute is valid only when Working mode in Table 12-46 is set to CE1.

    Line idle type Line idle code type of a CE1 interface.
    • 0x7e
    • 0xff

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

    Interframe filling tag type Interframe filling tag type of a CE1 interface.
    • 0x7e
    • 0xff

    Interfaces on both ends can communicate only when the same interframe filling tag and the same minimum number of interframe filling tags are set for them.

    Min number of interframe filling tags Minimum number of interframe filling tags of a CE1 interface.

    Interfaces on both ends can communicate only when the same interframe filling tag and the same minimum number of interframe filling tags are set for them.

    Data inversion Whether data inversion is configured for a CE1 interface.

    CE1 interfaces on both ends can communicate only when they have the same data inversion configuration.

    RAI detection Whether Remote Alarm Indication (RAI) detection is enabled for a CE1 interface.
    NOTE:

    This attribute is valid only when Working mode in Table 12-46 is set to CE1.

    AIS detection Whether Alarm Indication Signal (AIS) detection is enabled for a CE1 interface.
    NOTE:

    This attribute is valid only when Working mode in Table 12-46 is set to E1.

    If the CE1 interface works in E1 mode, AIS detection must be disabled.

    Table 12-48  Description of the CT1 interface's physical attributes and link layer attributes
    Parameter Description
    Clock mode Clock mode of a CT1 interface.
    • Master: indicates the master clock mode (internal clock mode).
    • Slave: indicates the slave clock mode (line clock mode).
    • System: indicates the system clock mode.
      NOTE:

      This parameter takes effect only when it is configured on interfaces of the 4E1T1-M/8E1T1-M interface card.

    When two routers are directly connected using two CT1 interfaces, one CT1 interface must work in master clock mode and the other must work in slave clock mode.

    When the MPU on the router obtains the clock with high accuracy from the upstream device and the router needs to synchronize the clock to downstream device, the interface on the router must be configured to work in system clock mode. Moreover, the interface on the downstream device must be configured to work in slave clock mode.

    Frame format Frame format of a CT1 interface.
    • ESF: indicates the Extended Super Frame (ESF) format.
    • SF: indicates the Super Frame (ESF) format.

    Two devices can communicate properly only when the same frame format is set for the interfaces on both devices. Otherwise, a CRC4 alarm is generated.

    Line idle type Line idle code type of a CT1 interface.
    • 0x7e
    • 0xff

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

    Interframe filling tag type Interframe filling tag type of a CT1 interface.
    • 0x7e
    • 0xff

    Interfaces on both ends can communicate only when the same interframe filling tag and the same minimum number of interframe filling tags are set for them.

    Min number of interframe filling tags Minimum number of interframe filling tags of a CT1 interface.

    Interfaces on both ends can communicate only when the same interframe filling tag and the same minimum number of interframe filling tags are set for them.

    Data inversion Whether data inversion is configured for a CT1 interface.

    CT1 interfaces on both ends can communicate only when they have the same data inversion configuration.

    RAI detection Whether RAI detection is enabled for a CT1 interface.

  • Disabling a CE1/CT1 interface

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

    2. Click corresponding to the CE1 or CT1 interface to be configured in the Operation column of CE1 Interface List or CT1 Interface List.

    3. Click OK.

  • Enabling a CE1/CT1 interface

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

    2. Click corresponding to the CE1 or CT1 interface to be configured in the Operation column of CE1 Interface List or CT1 Interface List.

    3. Click OK.

  • Switching the mode of a CE1/CT1 interface

    NOTE:

    The 4E1T1-M/8E1T1-M interface card only works in CE1/PRI mode and does not support working mode switching.

    1. Choose WAN access > CE1/CT1 Interface > Switch Mode to display the Switch Mode tab page.

    2. Click corresponding to the CE1 or CT1 interface whose mode needs to be switched in the Operation column of CE1 Card List or CT1 Card List.

      Only the 1E1T1-M/2E1T1-M board supports mode switching.

    3. Click OK.

      The configuration takes effect after several minutes.

  • Modifying serial interface configuration

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

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

    3. Set the parameters described in Table 12-49.

    4. Click OK to complete the configuration.

    • Figure 12-41  Modify Serial Interface (Protocol type is PPP)

    Table 12-49  Description of the serial interface parameters
    Parameter Description
    Interface name Type and number of an interface.
    • This parameter cannot be modified when the serial interface configuration is modified.

    Description Description of an interface.

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

    Protocol type Link layer protocol of a serial interface.
    • PPP: indicates that the link layer protocol of a serial interface is PPP, as shown in Figure 12-41. For the description of PPP protocol parameters, see Table 12-50.
    Table 12-50  Description of the PPP protocol parameters
    Parameter Description
    Username

    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.

    Subnet mask Subnet mask of an interface.
    NAT status 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.
    CRC format CRC mode of an interface.
    • 16: indicates that the 16-bit CRC is used for an interface.
    • 32: indicates that the 32-bit CRC is used for an interface.
    • none: indicates that CRC is not performed for an 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.

    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 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.

  • Deleting a serial interface

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

    2. Select the check box of the interface to be deleted and click Delete in the Interface Name column of Serial Interface List.

    3. Click OK.

  • Disabling a serial interface

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

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

    3. Click OK.

  • Enabling a serial interface

    1. Choose WAN access > CE1/CT1 Interface. Click CE1 Interface or CT1 Interface to display the CE1 Interface or CT1 Interface tab page.

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

    3. Click OK.

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Updated: 2019-04-12

Document ID: EDOC1100041803

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