Configuring Trill Timers - H3C TRILL S6300 Series Configuration Manual

3. Configure announcing
VLANs.
4. Configure the designated
VLAN.

Configuring TRILL timers

You can configure the following TRILL timers:
• Hello interval and Hello multiplier—The RB advertises Hello frames at the Hello interval to maintain
a TRILL adjacency. The shorter the Hello interval, the faster the network convergence. However, a
shorter Hello interval consumes more system resources. The adjacency holding time is obtained by
multiplying the Hello interval by the Hello multiplier. The RB advertises the adjacency holding time
to neighbors through Hello frames. If a neighbor does not receive any Hello frame from the RB
within the adjacency holding time, it removes the TRILL adjacency with the RB.
AVF inhibition time—As the AVF of a VLAN, the RB guarantees that frames of the VLAN enter and
•
leave a broadcast network through the same port. Other RBs on the broadcast network do not
process frames from the VLAN.
To avoid loops, the RB suppresses its AVF role during the inhibition time when one of the following
conditions exists:
The RB detects a root bridge change on the broadcast network.
Other RBs advertise a different AVF for the VLAN.
When the inhibition time expires, the RB restores its AVF role if it is still the AVF of the VLAN.
CSNP interval—On a broadcast network, the RB advertises CSNPs at the CSNP interval to perform
•
network-wide LSDB synchronization if it is elected as the DRB. A CSNP records all LSP digests of the
RB's local LSDB. A remote RB compares a received CSNP against its local LSDB to verify whether
some LSPs are aged out or missing. If the CSNP has an LSP digest that the local LSDB does not have,
the remote RB sends a PSNP packet to request the LSP.
To configure TRILL timers:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
or aggregate interface
view.
3. Configure the Hello
interval.
4. Configure the Hello
multiplier.
trill announcing-vlan { vlan-list | null }
trill designated-vlan vlan-id
Command
system-view
interface interface-type
interface-number
trill timer hello interval
trill timer holding-multiplier
count
11
By default, no announcing VLAN is
configured, and announcing
VLANs are enabled VLANs.
By default, no designated VLAN is
configured. The system
automatically selects an enabled
VLAN as the designated VLAN.
Remarks
N/A
N/A
The default setting is 10 seconds.
This command sets the Hello interval for an
RB. The Hello interval of a DRB is 1/3 of the
Hello interval of an RB. This allows for DRB
failures to be quickly detected.
The default setting is 3.