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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).
E1/T1 Interface

E1/T1 Interface

Context

NOTE:
  • The 1E1/T1-F and 2E1/T1-F interface cards support E1-F interfaces. For the mapping between the device and interface card, see 1/2-Fractional Channelized E1/T1 WAN Interface Card in the Huawei AR650&AR1600&AR6100 Series Routers Get to Know the Product-Hardware Description-Cards-E1/T1 Card.

    The 1E1/T1-F or 2E1/T1-F interface cards support E1-F interfaces. For the mapping between the device and interface card, see 1-Fractional Channelized E1/T1 WAN Interface Card or 2-Fractional Channelized E1/T1 WAN Interface Card in the Huawei AR650&AR1600&AR6100 Series Routers Get to Know the Product-Hardware Description-Cards-E1/T1 Card.

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

If E1/T1 access does not require multiple channel sets or ISDN PRI, using a CE1/CT1 interface is a waste of resources. In this scenario, you can use an E1/T1 interface to provide the E1/T1 access service. Compared with a CE1/CT1 interface, an E1/T1 interface provides E1/T1 access at a low cost.

Procedure

  • Modifying E1/T1 interface configuration

    1. Choose WAN access > E1/T1 Interface and click E1 Interface or T1 Interface to display the E1 Interface or T1 Interface tab page. Figure 12-42 shows CE1 Interface page and CT1 Interface page.

      Figure 12-42  E1 Interface Page

      Figure 12-43  T1 Interface Page

    2. Click corresponding to the E1 or T1 interface to be configured in the Operation column of E1 Interface List or T1 Interface List to display the modification page.

    3. Set the parameters described in Table 12-51.

    4. Click OK to complete the configuration.

    • Figure 12-44  Modify E1 Interface (Protocol type is PPP)

    NOTE:

    The parameters for modifying a T1 interface are the same as those for modifying an E1 interface. You can set the parameters for modifying a T1 interface according to the page for modifying an E1 interface.

    Table 12-51  Description of the E1/T1 interface parameters
    Parameter Description
    Interface name Type and number of an interface.
    • This parameter cannot be modified when the E1/T1 interface configuration is modified.

    Description Description of an interface.

    By default, the description of an interface is empty.

    Protocol type Link layer protocol of an E1/T1 interface.
    • PPP: indicates that the link layer protocol of a serial interface is PPP, as shown in Figure 12-44. For the description of PPP protocol parameters, see Table 12-52.
    Table 12-52  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.

    Subnet mask Subnet mask of an interface.
    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 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 E1/T1 interface

    1. Choose WAN access > E1/T1 Interface and click E1 Interface or T1 Interface to display the E1 Interface or T1 Interface tab page.

    2. Click Configure Interface Attribution in the Interface Attribution column of E1 Interface List or T1 Interface List to display the interface attribute configuration page.

    3. Set the parameters.

      • For the physical attributes and link layer attributes of an E1 interface, see Table 12-53.
      • For the physical attributes and link layer attributes of a T1 interface, see Table 12-54.
    4. Click OK to complete the configuration.

    • Figure 12-45  Configure E1 Interface Attributes

    • Figure 12-46  Configure T1 Interface Attributes

    Table 12-53  Description of the E1 interface's physical attributes and link layer attributes
    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 E1 interface.
    • Framed: indicates that an E1 interface works in framed mode.
    • Unframed: indicates that an E1 interface works in unframed mode.
    Frame format Frame format of an E1 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.

    Timeslots

    E1 interface timeslots that are bound.

    By default, all timeslots (except timeslot 0) of an E1 interface are bound.

    NOTE:

    This attribute is valid only when Working mode is set to Framed.

    Clock mode Clock mode of an E1 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.

    When two routers are directly connected using two E1 interfaces, one E1 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.

    CRC format CRC mode of an E1 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.

    Line idle code type Line idle code type of an E1 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 an E1 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 an E1 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 an E1 interface.

    E1 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 an E1 interface.
    NOTE:

    This attribute is valid only when Working mode is set to Framed.

    AIS detection Whether Alarm Indication Signal (AIS) detection is enabled for an E1 interface.
    NOTE:

    This attribute is valid only when Working mode is set to Unframed.

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

    Table 12-54  Description of the T1 interface's physical attributes and link layer attributes
    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."

    Timeslots

    T1 interface timeslots that are bound.

    By default, all timeslots (except timeslot 0) of a T1 interface are bound.

    Timeslot rate (bit/s)

    Timeslot rate of a T1 interface.

    • 64K: indicates that the timeslot rate of a T1 interface is 64 kbit/s.
    • 56K: indicates that the timeslot rate of a T1 interface is 56 kbit/s.
    Clock mode Clock mode of a T1 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.

    When two routers are directly connected using two T1 interfaces, one T1 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.

    CRC format CRC mode of a T1 interface.
    • 16: indicates that the 16-bit CRC is used for a T1 interface.
    • 32: indicates that the 32-bit CRC is used for a T1 interface.
    • none: indicates that CRC is not performed for a T1 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.

    Line idle code type Line idle code type of a T1 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 T1 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 T1 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 T1 interface.

    T1 interfaces on both ends can communicate only when they have the same data inversion configuration.

    RAI detection Whether RAI detection is enabled for a T1 interface.

  • Disabling an E1/T1 interface

    1. Choose WAN access > E1/T1 Interface and click E1 Interface or T1 Interface to display the E1 Interface or T1 Interface tab page.

    2. Click corresponding to the E1 or T1 interface to be configured in the Operation column of E1 Interface List or T1 Interface List.

    3. Click OK.

  • Enabling an E1/T1 interface

    1. Choose WAN access > E1/T1 Interface and click E1 Interface or T1 Interface to display the E1 Interface or T1 Interface tab page.

    2. Click corresponding to the E1 or T1 interface to be configured in the Operation column of E1 Interface List or T1 Interface List.

    3. Click OK.

  • Switching the mode of an E1/T1 interface

    NOTE:

    The 4E1T1-F/8E1T1-F interface card only works in E1-F mode and does not support working mode switching.

    1. Choose WAN access > E1/T1 Interface > Mode Switching to display the Mode Switching tab page.

    2. Click corresponding to the E1 or T1 interface whose mode needs to be switched in the Operation column of E1 Card List or T1 Card List.

    3. Click OK.

      The configuration takes effect after several minutes.

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Updated: 2019-04-12

Document ID: EDOC1100041803

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