Dell PowerConnect B-FCXs, Руководство по настройке

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PowerConnect B-Series FCX Configuration Guide 349
53-1002266-01
Metro Ring Protocol (MRP)
10
A topology group enables you to control forwarding in multiple VLANs using a single instance of a
Layer 2 protocol such as MRP. A topology group contains a master VLAN and member VLANs. The
master VLAN contains all the configuration parameters for the Layer 2 protocol (STP, MRP, or
VSRP). The member VLANs use the Layer 2 configuration of the master VLAN.
In Figure 67 , VLAN 2 is the master VLAN and contains the MRP configuration parameters for ring 1.
VLAN 30 and VLAN 40, the customer VLANs, are member VLANs in the topology group. Since a
topology group is used, a single instance of MRP provides redundancy and loop prevention for both
the customer VLANs.
If you use a topology group:
•
The master VLAN must contain the ring interfaces. The ports must be tagged, since they will
be shared by multiple VLANs.
•
The member VLAN for a customer must contain the two ring interfaces and the interfaces for
the customer. Since these interfaces are shared with the master VLAN, they must be tagged.
Do not add another customer interfaces to the VLAN.
For more information about topology groups, refer to “Topology groups” on page 333.
Refer to “MRP CLI example” on page 355 for the configuration commands required to implement
the MRP configuration shown in Figure 67 .
Configuring MRP
To configure MRP, perform the following tasks. You need to perform the first task on only one of the
nodes. Perform the remaining tasks on all the nodes.
NOTE
There are no new commands or parameters to configure MRP with shared interfaces (MRP Phase 2).
•
Disable one of the ring interfaces. This prevents a Layer 2 loop from occurring while you are
configuring the devices for MRP.
•
Add an MRP ring to a port-based VLAN. When you add a ring, the CLI changes to the
configuration level for the ring, where you can perform the following tasks.
•
Optionally, specify a name for the ring.
•
On the master node only, enable the device to be the master for the ring. Each ring can
have only one master node.
•
Specify the MRP interfaces. Each device has two interfaces to an MRP ring.
•
Optionally, change the hello time and the preforwarding time. These parameters control
how quickly failover occurs following a change in the state of a link in the ring.
•
Enable the ring.
•
Optionally, add the ring VLAN to a topology group to add more VLANs to the ring. If you use a
topology group, make sure you configure MRP on the group master VLAN. Refer to
“Topology
groups” on page 333.
•
Re-enable the interface you disabled to prevent a Layer 2 loop. Once MRP is enabled, MRP will
prevent the Layer 2 loop.
•
On PowerConnect B-Series FCX devices, when configuring MRP-1 or MRP-2 rings on a VLAN,
using the metro-rings command in addition to the metro-ring command is highly
recommended. Since these devices do not support mac-range filtering, the metro-rings
command greatly reduces the number of FDB entries.