Configuring Trill Lsp Parameters And Features; Setting Lsp Parameters - H3C S10500 Series Configuration Manual

•
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
Enter system view.
1.
Enter Layer 2 Ethernet
2.
or aggregate interface
view.
Configure the Hello
3.
interval.
Configure the Hello
4.
multiplier.
Configure the AVF
5.
inhibition time.
Configure the CSNP
6.
interval.

Configuring TRILL LSP parameters and features

Setting LSP parameters

You can modify the following LSP parameters:
•
LSP maximum age—The RB uses the LSP maximum age as the remaining lifetime of the
LSPs that it originates. When the RB detects that the remaining lifetime of an LSP reaches 0
seconds in the LSDB, the RB performs the following tasks:
Removes the LSP's content.
Keeps the LSP's digest.
Sets the LSP's remaining lifetime to 0 and purges the LSP from the network by advertising
the LSP to other RBs.
•
LSP refresh interval—A locally originated LSP is forcibly refreshed when its remaining lifetime
is no greater than n: n = LSP maximum age – LSP refresh interval. This mechanism avoids
frequent LSP aging and ensures network stability.
Command
system-view
interface interface-type
interface-number
trill timer hello interval
trill timer holding-multiplier
count
trill timer avf-inhibited time
trill timer csnp interval
11
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.
The default setting is 30 seconds.
The default setting is 10 seconds.