H3C Technologies H3C S6800 Series Switches - Manual (Page 24)

17
An LSP sent by an RB carries the following TRILL distribution tree information:
• The number of TRILL distribution trees that the RB wants all RBs to compute.
• The maximum number of TRILL distribution trees that the RB can compute (this number is fixed at 15).
• The number of TRILL distribution trees that the RB has computed.
Each RB can compute a maximum of m TRILL distribution trees. An RB determines the number of TRILL
distribution trees to compute (n) by selecting the lower value from the following two values:
• The number of TRILL distribution trees that the highest-priority RB wants all RBs to compute.
• The smallest m value across the TRILL network.
The RB selects the first n nicknames from the nickname list advertised by the highest-priority RB. The RB
uses the selected nicknames as the root nicknames for computing distribution trees.
To set basic TRILL distribution tree parameters:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter TRILL view. trill N/A
3. Set a priority for the RB. tree-root priority priority The default setting is 32768.
4. Configure the number of
TRILL distribution trees that
the RB wants all RBs to
compute.
trees calculate count The default setting is 1.
Enabling TRILL distribution tree multithread calculation
This feature enables a multicore CPU device to improve TRILL distribution tree calculation efficiency by
using each thread to calculate a distribution tree.
To enable TRILL distribution tree multithread calculation:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter TRILL view. trill N/A
3. Enable TRILL distribution tree
multithread calculation.
multicast multi-thread enable By default, this feature is disabled.
Enabling load balancing over TRILL distribution trees
By default, ingress traffic is not load balanced over TRILL distribution trees after a forwarding VLAN is
deleted on the RB. To load balance ingress traffic of the remaining forwarding VLANs over the existing
distribution trees, you can enable load balancing over TRILL distribution trees.
Ingress traffic is load balanced in any of the following conditions, regardless of whether load balancing
is enabled or not:
• A forwarding VLAN is added.
• A distribution tree is added or deleted.