12
Configuring the DRB priority of a TRILL port
On a broadcast network, TRILL must elect a DRB. An RB with a higher DRB priority is preferred in
DRB election. When two RBs have the same DRB priority, the RB with a higher MAC address takes
precedence.
To configure the DRB priority of a TRILL port:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter Layer 2 Ethernet
or aggregate interface
view.
interface
interface-type
interface-number
N/A
3.
Configure the DRB
priority of the TRILL
port.
trill
drb-priority
priority
By default, the DRB priority of a TRILL port
is 64.
Setting the link cost for a TRILL port
The link cost for a TRILL port can be automatically calculated by the system or manually set.
•
A manually set link cost takes precedence over a calculated link cost.
•
If no link cost is set and automatic link cost calculation is enabled, the calculated link cost takes
effect.
•
If no link cost is set and automatic link cost calculation is disabled, the default link cost of 2000
is used.
If you manually set the link cost for a TRILL port, make sure its peer TRILL port uses the same link
cost.
The system automatically calculates the link cost of a TRILL port by using the following formula: link
cost = 20000000000000/interface baud rate.
To set the link cost for a TRILL port:
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter TRILL view.
trill
N/A
3.
Enable automatic link cost
calculation for TRILL ports.
auto-cost
enable
By default, automatic link cost
calculation is enabled for TRILL
ports.
4.
Return to system view.
quit
N/A
5.
Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
interface
interface-type
interface-number
N/A
6.
Set the link cost for the TRILL
port.
trill
cost
cost-value
The default setting is 2000.
