Datasheet

11-31
Cisco ONS 15454 SDH Reference Manual, R7.0
October 2008
Chapter 11 Circuits and Tunnels
11.16.3 Single and Dual Rolls
Figure 11-14 Single Source Roll
In Figure 11-15, you can select any available VC4 on Node 2 for a new destination.
Figure 11-15 Single Destination Roll
Figure 11-16 shows one circuit rolling onto another circuit at the destination. The new circuit has
cross-connects on Node 1, Node 3, and Node 4. CTC deletes the cross-connect on Node 2 after the roll.
Figure 11-16 Single Roll from One Circuit to Another Circuit (Destination Changes)
Figure 11-17 shows one circuit rolling onto another circuit at the source.
Figure 11-17 Single Roll from One Circuit to Another Circuit (Source Changes)
83267
Node 1
S1
S2
D
Node 2
Original leg
New leg
83266
Node 1
S
D2
D1
Node 2
Original leg
New leg
78703
Node 1
S
D
D2
Node 2
Node 4Node 3
Original leg
New leg
134274
Node 1
S
D
Node 2
Node 4Node 3
Original leg
New leg
S2