No relevant resource is found in the selected language.
Your browser version is too early. Some functions of the website may be unavailable. To obtain better user experience, upgrade the browser to the latest version.
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).
Configuring Principles for Using Equal-Cost IPv6 IS-IS Routes
Configuring Principles for Using Equal-Cost IPv6 IS-IS Routes
Context
If there are redundant IS-IS links, multiple routes may
have an equal cost.
Configure load balancing for equal-cost
IS-IS routes so that traffic will be evenly balanced among these links.
This mechanism increases the link bandwidth usage and prevents network
congestion caused by link overload. However, this mechanism may make
traffic management more difficult because traffic will be randomly
forwarded.
Procedure
Configure equal-cost IS-IS routes to work in load-balancing
mode.
Run system-view
The system view is displayed.
Run isis [ process-id ]
The IS-IS view is displayed.
Run ipv6 maximum load-balancingnumber
The maximum number of
load-balancing equal-cost IPv6 IS-IS routes is set.
By default, the AR100&AR120&AR150&AR160&AR200 series, AR1200 series, AR2201-48FE,
AR2202-48FE, AR2204-27GE, AR2204-27GE-P, AR2204-51GE-P, AR2204-51GE, AR2204-51GE-R, AR2204E, AR2204E-D, AR2204 support a maximum of four equal-cost routes, and the AR2220, AR2220E, AR2204XE, AR2240 (using SRU40, SRU60, SRU80, SRU100E), AR2240C, AR3600 (using SRUX5), and AR3200 (using SRU40, SRU60, SRU80, SRU100E) series support a maximum of eight equal-cost routes, AR2240 (using SRU200, SRU200E or SRU400), and AR3200 (using SRU200, SRU200E or SRU400) series support a maximum of sixteen equal-cost routes.
When the number of equal-cost routes is
greater than number specified in the ipv6 maximum load-balancing command, valid routes are selected for load balancing based
on the following criteria:
Route preference: Routes with higher preferences are selected
for load balancing.
Interface index: If routes have the same priorities, routes with
higher interface index values are selected for load balancing.
Next hop IP address: If routes have the same priorities and interface
index values, routes with larger IP address are selected for load
balancing.