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This document describes the configuration of Ethernet services, including configuring link aggregation, VLANs, Voice VLAN, VLAN mapping, QinQ, GVRP, MAC table, STP/RSTP/MSTP, SEP, and so on.
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Setting an Interface Blocking Mode
Setting an Interface Blocking Mode
Context
In a SEP segment, some interfaces are blocked to prevent
loops.
You can configure the interface blocking mode
to specify a blocked interface. Table 17-12 lists interface
blocking modes.
Table 17-12 Interface blocking mode
Interface Blocking Mode
Description
Specify the interface with the highest priority as the blocked
interface.
This mode applies to a large-scale network.
After
fault recovery, the interface with the highest priority in a SEP segment
becomes the blocked interface. In this mode, the priorities of the
interfaces in the SEP segment need to be set in advance.
Specify the interface in the middle of a SEP segment as
the blocked interface.
This mode applies to a network where traffic is symmetrically
distributed.
After fault recovery, the interface in the middle
of a SEP segment becomes the blocked interface.
Specify a blocked interface based on the configured hop
count.
This mode applies to a small-scale network.
After fault recovery, a specified interface is blocked based on
the hop count. A network planner needs to be familiar with the topology
of the entire SEP segment and the number of hops from the blocked
interface to the primary edge interface.
Specify a blocked interface based on the device and interface
names.
This mode applies to a small-scale network.
After fault recovery, a specified interface is blocked based on the
device and interface names. A network planner needs to be familiar
with the names of devices and interfaces in the entire SEP segment
and ensures that each device name is unique.
Perform the following operations on the device where
the primary edge interface or no-neighbor primary edge interface is
located:
Procedure
Run:
system-view
The system view is displayed.
Run:
sep segmentsegment-id
A SEP segment is created and the
view of the SEP segment is displayed.
By default,
one of the interfaces at two ends of the link that is set up last
or recovers from a fault last is blocked.
Follow-up Procedure
If the interface with the highest priority is specified
to block, run the sep segmentsegment-idprioritypriority command
in the view of the interface to be blocked to increase its priority.
When a fault is rectified, the specified interface is blocked.
The default priority of an interface added to a SEP segment is
64. The priority value of an interface is an integer that ranges from
1 to 128. A larger priority value indicates a higher priority.
