No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

eSight V300R009C00 Operation Guide 10

Rate and give feedback:
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).
How Do I Do If Links Between Network Devices Cannot Be Discovered

How Do I Do If Links Between Network Devices Cannot Be Discovered

Question

After devices are added to eSight, the links cannot be added to eSight.

Answer

Troubleshooting for LLDP Links:

Use either of the following methods to rectify the fault.

  • Rectify the fault by performing the following operations on eSight.
    1. Ensure that Telnet parameters are set consistently on the devices and eSight to ensure normal communication.
    2. Choose Resource > Network > Equipment > Link Management from the main menu.

      Choose Discover Link from the navigation tree. On the Discover Link page, perform the manual link discovery operation.

  • Rectify the fault by running commands on the devices.
    1. Run the following command to check whether LLDP is enabled globally on the devices.

      If LLDP is not enabled globally on the devices, run the following command to enable LLDP globally.

    2. Check whether LLDP is enabled on device interfaces. If not, enable LLDP on device interfaces.

      The following figure indicates that LLDP is disabled on device interfaces.

      Run the following command to enable LLDP on device interfaces.

    3. Check whether LLDP neighbor information is displayed on the devices.

      Run the following command to check whether LLDP neighbor information is displayed on the devices. If no LLDP neighbor information is displayed on the devices, the devices fail to detect links. Check the devices' network settings to verify whether physical links exist. If LLDP neighbor information is displayed on the devices, go to Step 4.

    4. Check whether the SNMP configuration is correct.
      • SNMPv2

      snmp-agent community read XXX mib-view iso-view //The SNMP read community of the device must be set to mib-view and mib-view must include iso-view.

      snmp-agent community write XXX mib-view iso-view //The SNMP read community of the device must be set to mib-view and mib-view must include iso-view.

      snmp-agent mib-view iso-view include iso

      • SNMPv3

      snmp-agent mib-view included View_ALL iso //View_ALL is the configured MIB view name. To ensure that eSight can manage devices normally (for example, discovering device links through the LLDP), the MIB view must contain the iso node.

      snmp-agent group v3 snmpv3group privacy write-view View_ALL notify-view View_ALL //snmpv3group indicates the configured user group. Set the write view name and notification view name to View_ALL. By default, the write view has the read permission and read-view does not need to be configured. The notification view is used to restrict the MIB node that sends alarms to eSight.

    5. After the configurations are complete, perform auto link discovery on the Link Management page again.

Manually create links between devices that do not support LLDP and check the link status.

Troubleshooting for LLDP Links (CDP protocol):

  1. Ensure that Telnet parameters are set consistently on the devices and eSight to ensure normal communication.
  2. Enable the CDP protocol for the devices.
     
    configure terminal 
    cdp run     

    Check the CDP global configuration information on the devices.

     
    show cdp 
    Global CDP information: 
    Sending CDP packets every 60 seconds 
    Sending a holdtime value of 180 seconds 
    Sending CDPv2 advertisements is  enabled     

    Check Cisco devices that are connected to the devices.

     
    show cdp neighbors 
    Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge 
                      S - Switch, H - Host, I - IGMP, r - Repeater 
     
    Device ID            Local Intrfce     Holdtme    Capability  Platform  Port ID 
    FTX1606M0FE/00000C   Gig 0/0            164           H       NAM       MGMT PORT     
  3. Choose Resource > Network > Equipment > Link Management from the main menu.

    Choose Discover Link from the navigation tree. On the Discover Link page, perform the manual link discovery operation.

Troubleshooting for Side-by-Side Links:

Ensure that the IP addresses and subnet masks of the interfaces at the two sides meet Side-by-Side requirements.

  • Ensure that the subnet mask is 255.255.255.252 (30-bit subnet mask).
  • Ensure that the last two binary digits are not 00 or 11 after the IP address is converted to a binary format.
  • Ensure that the IP addresses are in the same network segment.

You can view port IP address details on the IP address management page on the NE manager.

Translation
Download
Updated: 2019-09-07

Document ID: EDOC1100011877

Views: 315190

Downloads: 637

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next