Metro Ring Protocol (Mrp) - Dell PowerConnect B-FCXs Configuration Manual

TABLE 60
This field...
master-vlan
member-vlan
Common control ports
L2 protocol
Per vlan free ports

Metro Ring Protocol (MRP)

MRP is a Dell proprietary protocol that prevents Layer 2 loops and provides fast reconvergence in
Layer 2 ring topologies. It is an alternative to STP and is especially useful in Metropolitan Area
Networks (MANs) where using STP has the following drawbacks:
•
•
Figure 58
PowerConnect B-Series FCX Configuration Guide
53-1002266-01
CLI display of topology group information
STP allows a maximum of seven nodes. Metro rings can easily contain more nodes than this.
STP has a slow reconvergence time, taking many seconds or even minutes. MRP can detect
and heal a break in the ring in sub-second time.
shows an example of an MRP metro ring.
Displays...
The master VLAN for the topology group. The settings for STP, MRP, or VSRP on
the control ports in the master VLAN apply to all control ports in the member
VLANs within the topology group.
The member VLANs in the topology group.
The master VLAN ports that are configured with Layer 2 protocol information.
The Layer 2 protocol configuration and state of these ports in the master VLAN
applies to the same port numbers in all the member VLANs.
The Layer 2 protocol configured on the control ports. The Layer 2 protocol can
be one of the following:
•
MRP
•
STP
•
VSRP
The ports that are not controlled by the Layer 2 protocol information in the
master VLAN.
Metro Ring Protocol (MRP)
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