Setting The Spf Algorithm Parameters; Configuring Trill Distribution Trees; Setting Basic Distribution Tree Parameters - H3C S5830V2 Series Configuration Manual

Step
46. Enter system view.
47. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
48. Enable the pseudonode
bypass feature.

Setting the SPF algorithm parameters

The RB uses the SPF algorithm to calculate a shortest path tree with itself as the root based on the
LSDB. The RB uses the shortest path tree to determine the next hop to a destination network. By
adjusting the SPF calculation intervals, you can prevent resource overconsumption when the
network is unstable.
When the network is stable, the SPF calculation interval for continuous calculations is reduced to
minimum-interval. When the network is unstable, the SPF calculation interval is added by
incremental-interval × 2
calculation until the maximum interval is reached.
To set the SPF algorithm parameters:
Step
49. Enter system view.
50. Enter TRILL view.
51. Set the SPF
calculation interval for
TRILL.

Configuring TRILL distribution trees

Setting basic distribution tree parameters

In a TRILL network, RBs perform the following tasks:
•
Compute TRILL distribution trees according to the LSDB.
•
Use the TRILL distribution trees to guide the forwarding of multidestination frames.
An RB with a higher priority is selected as the root bridge of a TRILL distribution tree.
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.
Command
system-view
interface interface-type
interface-number
trill bypass-pseudonode enable
n-2
(n is the number of continuous SPF calculation times) for each SPF
Command
system-view
trill
timer spf maximum-interval
[ minimum-interval
[ incremental-interval ] ]
16
Remarks
N/A
N/A
By default, the pseudonode
bypass feature is disabled.
Remarks
N/A
N/A
By default, the maximum SPF calculation
interval is 10 seconds, the minimum SPF
calculation interval is 10 milliseconds, and
the SPF calculation incremental interval is
20 milliseconds.