Configuring The Announcing Vlans And Designated Vlan; Configuring Trill Timers - HP 6125XLG Trill Configuration Manual

Configuring the announcing VLANs and
designated VLAN
The concepts and symbols used to describe a VLAN on a port are as follows:
• Enabled VLAN—A VLAN enabled on the port.
• Forwarding VLAN—A VLAN for which the port is the appointed port.
• ∩ and ∪—Set operation symbols. ∩ indicates set-theoretic intersection, and ∪ indicates
set-theoretic union.
RBs send Hello frames in a set of VLANs. The VLAN set is calculated as follows:
DRB—Enabled VLANs ∩ (announcing VLANs ∪ designated VLAN).
•
Non-DRB—Enabled VLANs ∩ (designated VLAN ∪ (announcing VLANs ∩ forwarding VLANs)).
•
The designated VLAN forwards TRILL frames (except Hello frames) between RBs.
• If no designated VLAN is configured for the DRB of a link, the frames are exchanged through the
lowest-numbered enabled VLAN.
If a designated VLAN is configured for the DRB of a link, the frames are exchanged through the
•
designated VLAN.
To configure the announcing VLANs and designated VLAN:
Step
1. Enter system view.
2. Enter Layer 2 Ethernet
interface view or Layer 2
aggregate interface view.
3. Configure announcing
VLANs.
4. Configure the designated
VLAN.

Configuring TRILL timers

You can configure the following TRILL timers:
• Hello interval and Hello multiplier—An 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
before the adjacency holding time expires, it removes the TRILL adjacency with the RB.
Inhibition time—An RB that acts as the AVF of a VLAN guarantees that frames from the VLAN have
•
only one incoming port or one outgoing port along a link. When other RBs receive frames from the
VLAN, they do not perform any processing. However, when the RB detects that a root bridge
change occurs on a link or that the AVF advertised by other RBs conflicts with the local AVF, the RB
Command
system-view
interface interface-type
interface-number
trill announcing-vlan { vlan-list | null }
trill designated-vlan vlan-id
10
Remarks
N/A
N/A
By default, no announcing VLAN is
configured, and the announcing
VLANs are the enabled VLANs.
By default, no designated VLAN is
configured.