H3C Technologies H3C S6800 Series Switches - Manual (Page 28)

21
Permitting a non-TRILL device to learn the MAC
address of the TRILL VR
A non-TRILL device is a device that does not support TRILL or is not enabled with TRILL. When a non-TRILL
device is connected to an access RB, the device cannot learn the MAC address of the TRILL VR. User
packets destined for the TRILL VR are flooded by the device.
To avoid the flooding traffic, enable TRILL VR simulation on the access RB interface that connects to the
non-TRILL device. This feature enables the interface to send a packet that uses the MAC address of the
TRILL VR as the source MAC address at a specified interval.
To permit a non-TRILL device to learn the MAC address of the TRILL VR:
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 TRILL VR simulation. trill vr packet simulate By default, this feature is disabled.
4. Set the packet sending
interval.
trill vr packet timer time
By default, the packet sending
interval is 280 seconds.
Enabling MAC address retaining on TRILL ports
On an access RB, the system deletes all MAC addresses on a TRILL port when the port is down. If the TRILL
VR has an ARP entry for a removed MAC address, the VR will forward frames destined for the MAC
address to the access RB. As a result, the access RB floods the frames in the TRILL network.
To prevent such floods, enable MAC address retaining on TRILL ports. The system retains the MAC
addresses on TRILL ports when the ports are down.
To enable MAC address retaining on TRILL ports:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter TRILL view. trill N/A
3. Enable MAC address
retaining on TRILL ports.
mac-deleting forbidden
By default, the system deletes all
MAC addresses on a TRILL port
when the port is down.
This feature takes effect only on
TRILL ports of which the link type is
access or hybrid.
Enabling logging of TRILL neighbor changes
Perform this task to output logs of TRILL neighbor changes to the configuration terminal.