Lucent Technologies FiberReach DDM-2000 - Example of OC-1 Ring Hairpin Routing, Dual-Homed Configuration

363-206-305
Administration and Provisioning
8-48
Issue 3 June 2000
OC-1 Ring Hairpin Routing, Dual-Homed
Example
8
In Figure 8-6, Node X is a DDM-2000 OC-3 shelf equipped with a 27-type
OLIU circuit pack in Function Unit A slot 1, and 22-type OLIU circuit packs
in the Main slots. Node Y is also a DDM-2000 OC-3 shelf equipped with a
27-type OLIU circuit pack in Function Unit A slot 2 and Function Unit C
slot 2.
Figure 8-6. Example of OC-1 Ring Hairpin Routing, Dual-Homed Configuration
Node RT-B is a DDM-2000 FiberReach Multiplexer with 26G2-type OLIU
circuit packs in Main and DS1 or DS1PM circuit packs in the Low-Speed
Group C slots, and it is included in the inner OC-1 ring.
Node RT-A is a DDM-2000 FiberReach Multiplexer with 26-type OLIU
circuit packs in Main and DS1 or DS1PM circuit packs in the Low-Speed
Group A slots, and it is included in the outer OC-1 ring.
c-2
c-2
c-1
c-1
b-2
b-2
b-1
b-1
a-2
a-2
a-1
a-1
OC-3 X OC-3 Y
MAIN 1 MAIN 1MAIN 2 MAIN 2
111
222
FiberReach
FiberReach
DS1
DS1
RT-B
RT-A
ent-crs-vt1: m-1-7-4, c-1-1:cct=twoway
ent-crs-vt1:m-1-4-1, b-1-3: cct=twoway
ent-crs-vt1: a-1-7-4, a=2-1-1: cct=twoway
ent-crs-vt1: a-1-7-4, a=2-1-1: cct=twoway
100048-3
OC-3