363-206-285
Administration and Provisioning
8-50 Issue 3 June 2001
The following are the allowed VT1.5 addresses:
DS3/EC-1 Ring Network Cross-Connection 8
DS3/EC-1 ring network provisioning follows the same procedure as the DS1 ring
provisioning example except that function unit B is involved. For example, in
Figure 8-3, replacing the MXRVO and DS1 circuit packs at Node 1, function unit
B, and at Node 6, function unit B with DS3 or STS1E circuit packs, converts the
figure to a DS3 path protected ring. The following cross-connections would then
be made:
OC-3/OC-12 Ring Drop and Continue Cross-
Connection Provisioning 8
All the information on "Ring Cross-Connection Provisioning" applies to "Ring Drop
and Continue Cross-Connection Provisioning." Please review "Ring Cross-
Connection Provisioning" as that information is not repeated here. Only the new
provisioning information is presented here. This information applies to both STS-1
and VT1.5 traffic. Only the cross-connection addresses are different. A mixed
traffic ring of STS-1 and VT1.5 drop and continue services is supported.
Two nodes are defined to be drop and continue nodes in a ring subnetwork and
are the exit points where "two" copies of the same service are available. By
making two copies of the same service available at two nodes, the network is
protected from failure of a node (for example, a CO) that affects all traffic on the
ring. For rings that carry drop and continue services, the drop and continue nodes
are neighbors and all "drop and continue" traffic must be continued on the ring
connecting the two nodes.
In Figure 8-4 (one half of a drop and continue DRI application) CO 1 and CO 2 are
drop and continue nodes. Traffic continued at CO 1 uses Ring 2 which is the fiber
connecting CO 1 to CO 2. Likewise, continued traffic at CO 2 uses Ring 1, which
is the fiber connecting CO 2 to CO 1.
Object Address Entity
VT1.5 m-{1-3}-{1-7}-{1-4,all} 22-type OLIU (high-speed interface)
VT1.5 m-{1-12}-{1-7}-{1-4,all} 24G-U/29G-U OLIU (high-sped interface)
VT1.5 {a,b,c}-{1-7}-{1-4,all} LAN low-speed interfaces
Node Cross-Connection
2, 3, 4, and 5 ent-crs-sts1:m-2,m-2
1 ent-crs-sts1:m-2,b
6 ent-crs-sts1:m-2,b
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