Ethernet (G.8032) Rings; Erp Topology - Alcatel-Lucent 5620 User Manual

9 — 9500 MPR service management and service tunnels
Profile Node profile
type type
VLAN Dot1Q
ERPS services - Ring tail based (L1 LAG as tail type)
Cpipe TDM2TDM
TDM2ETH
TDM2TDMoETH
VLAN Dot1Q
ERPS services - Ring tail based (Ethernet link as tail type)
Cpipe TDM2ETH
VLAN Dot1Q
ERPS services - Ring tail based (Fiber Microwave as tail type)
Cpipe TDM2TDM
TDM2ETH
TDM2TDMoETH
VLAN Dot1Q
(2 of 2)
9.3

Ethernet (G.8032) rings

ERP topology

9-8
VLAN path VLAN path
type creation type
Ring based Manual
with tail
multipoint
Ring based Manual
with tail
Ring based Manual
with tail
multipoint
Ring based Manual
with tail
Ring based Manual
with tail
multipoint
Ring based Manual
with tail
Ring based Manual
with tail
multipoint
Ethernet Ring Protection (ERP), as specified in ITU-T G.8032, is a protection
mechanism for Ethernet ring topologies that provides a resilient Ethernet network.
ERP provides sub-50 ms protection and recovery switching for Ethernet traffic in a
ring topology while ensuring that loops are not formed at the Ethernet layer.
G.8032v1 supports a single ring topology; G.8032v2 supports multiple rings/ladder
topology. For more information about Ethernet (G.8032) rings, see the ITU website
at http://itu.int.
An ERP topology is a collection of Ethernet ring nodes that forms a closed physical
loop. Between two and sixteen Ethernet ring nodes are supported per ERP topology.
One ERP topology is supported per NE. Up to two ERP instances are supported per
ERP topology. Ethernet ring links connect two adjacent Ethernet ring nodes
participating in the same ERP topology.
Loop avoidance in the ring is achieved by guaranteeing that at anytime, traffic may
flow on all but one of the ring links. This link is called the ring protection link (RPL).
One designated node, the RPL Owner (also referred to as the master node), is
responsible to block traffic over the RPL.
September 2013
Extension of Terminates
VLAN path on radio
Yes Yes
No Yes
Yes Yes
No Yes
Yes Yes
No Yes
Yes Yes
Alcatel-Lucent 5620 Service Aware Manager, Release 11.0 R5
NEtO service Service
interworking Discovery
None On adding
ring elements
to ring
None On adding
ring elements
to ring
None On adding
ring elements
to ring
None On adding
ring elements
to ring
None On adding
ring elements
to ring
None On adding
ring elements
to ring
None On adding
ring elements
to ring
3HE 08459 AAAA TQZZA Edition 01
MPR User Guide
Initial
5620 SAM
release
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