H3C Technologies H3C S6800 Series Switches - Manual (Page 23)

16
Enabling TRILL pseudonode bypass
This feature disables a DRB from generating LSPs for the pseudonode when the DRB has only one
neighbor on a broadcast network. This reduces the number of LSPs in the network.
To enable the pseudonode bypass feature:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface interface-type
interface-number
N/A
3. Enable the pseudonode
bypass feature.
trill bypass-pseudonode enable
By default, the pseudonode bypass
feature is disabled.
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 n-2 (n is the number of continuous SPF calculation times) for each SPF calculation
until the maximum interval is reached.
To set the SPF algorithm parameters:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter TRILL view. trill N/A
3. Set the SPF calculation
interval for TRILL.
timer spf maximum-interval
[ minimum-interval
[ incremental-interval ] ]
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.
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.