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


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


ME60 V800R010C10SPC500 Feature Description - WAN Access 01

This is ME60 V800R010C10SPC500 Feature Description - WAN Access

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).
IS-IS Overload

IS-IS Overload

The overload (OL) field of LSPs configured on a device prevents other devices from calculating the routes passing through this device.

If a system fails to store new LSPs for LSDB synchronization, the routes calculated by the system are incorrect. In that case, the system enters the Overload state. The user can configure the device to enter the Overload state when the system lacks sufficient memory. At present, users can set the Overload timer when IS-IS is started and configure whether to delete the leaked routes and whether to advertise the imported routes. A device enters the Overload state after an exception occurs on the device or when it is configured to enter the state.
  • If IS-IS enters the Overload state after an exception occurs on the device, the system deletes all imported or leaked routes.

  • If IS-IS enters the Overload state based on a user configuration, the system only deletes all imported or leaked routes if configured to do so.

Although LSPs with overload fields are flooded throughout the network, they are ignored in the calculation of the routes passing through the device in the Overload state. Specifically, after the overload field of LSPs is configured on a device, other devices do not count the routes that pass through the device when performing SPF calculation, but the direct routes between the device and other devices are still calculated.

If a device in an IS-IS domain is faulty, routes may be incorrectly calculated across the entire domain. The overload field can be configured for the device to isolate it from the IS-IS network temporarily, which facilitates fault isolation.

Updated: 2019-01-04

Document ID: EDOC1100059473

Views: 17913

Downloads: 10

Average rating:
This Document Applies to these Products

Related Version

Related Documents

Previous Next