Adjusting The Spf Algorithm Parameters; Configuring The Trill Unicast Equal-Cost Routes; Configuring Trill Distribution Trees - HP 6125XLG Trill Configuration Manual

Adjusting the SPF algorithm parameters

Based on the LSDB, an RB uses the SPF algorithm to calculate a shortest path tree with itself as the root.
The RB uses the shortest path tree to determine the next hop to a destination network. By adjusting the SFP
calculation intervals, you can prevent resource overconsumption when the network changes frequently.
When the network is stable, the SPF calculation interval for continuous calculations is reduced to
minimum-interval. When the network changes frequently, the SPF calculation interval is added by
incremental-interval × 2
the SPF calculation interval cannot exceed maximum-interval.
To adjust SPF algorithm parameters:
Step
1. Enter system view.
2. Enter TRILL view.
3. Set the SPF calculation
interval for TRILL.

Configuring the TRILL unicast equal-cost routes

Configuring multiple equal-cost routes to the same destination implements load balancing among these
links and improves the link efficiency. You can configure the maximum number of TRILL unicast equal-cost
routes.
The maximum number of TRILL unicast equal-cost routes is restricted by the maximum number of
equal-cost routes. The maximum number of equal-cost routes can be configured by using the
max-ecmp-num command. It is in the range of 1 to 32. After you configure the maximum number of
equal-cost routes as n, the value range for the number argument of the max-unicast-load-balancing
command is 1 to n. For more information about the max-ecmp-num command, see Layer 3—IP Routing
Command Reference.
To configure the maximum number of TRILL unicast equal-cost routes:
Step
1. Enter system view.
2. Enter TRILL view.
3. Configure the maximum
number of TRILL unicast
equal-cost routes.

Configuring TRILL distribution trees

In a TRILL network, RBs do the following:
(where n is the times of continuous SPF calculations triggered) each time, but
n-2
Command
system-view
trill
timer spf maximum-interval
[ minimum-interval
[ incremental-interval ] ]
Command
system-view
trill
max-unicast-load-balancing
number
13
Remarks
N/A
N/A
By default, the maximum SFP calculation
interval is 10 seconds, the minimum SPF
calculation interval is 10 milliseconds, and
the SFP calculation incremental interval is 20
milliseconds.
Remarks
N/A
N/A
The default setting is 8.