Figure 6-15 A Dcc Tunnel; Table 6-4 Dcc Tunnels - Cisco ONS 15327 User Documentation

Chapter 6 Circuits and Tunnels
Table 6-4
Table 6-4
DCC
SDCC
Tunnel 1
Tunnel 2
Tunnel 3
Figure 6-15
1/Slot 3/Port 1 and Node 3/Slot 3/Port 1. Each ONS 15327 node is connected by OC-48 trunk cards. In
the example, three tunnel connections are created, one at Node 1 (OC-3 to OC-48), one at Node 2 (OC-48
to OC-48), and one at Node 3 (OC-48 to OC-3).

Figure 6-15 A DCC tunnel

From (A)
Slot3 (OC3)
port 1, SDCC
When you create DCC tunnels, keep the following guidelines in mind:
Each ONS 15327 can have up to 32 DCC tunnel connections.
•
Each ONS 15327 can have up to 10 SDCC terminations.
•
An SDCC that is terminated cannot be used as a DCC tunnel end-point.
•
An SDCC that is used as an DCC tunnel end-point cannot be terminated.
•
All DCC tunnel connections are bidirectional.
•
June 2002
shows the DCC tunnels that you can create.
DCC Tunnels
SONET SONET
Layer Bytes
Section D1 - D3
Line D4 - D6
Line D7 - D9
Line D10 - D12 Yes
shows a DCC tunnel example. Third-party equipment is connected to OC-3 cards at Node
Link 1
To (B)
Slot4 (OC48)
port 1, Tunnel 1
Node 1
Third party
equipment
OC-3
OC-12, OC-48
(all ports)
Yes Yes
Yes Yes
Yes Yes
Yes
Link 2
From (A) To (B)
Slot2 (OC48) Slot4 (OC48)
port 1, Tunnel 1 port 1, Tunnel 1
Node 2
Cisco ONS 15327 User Documentation, R3.3
Creating DCC Tunnels
Link 3
From (A) To (B)
Slot2 (OC48) Slot3 (OC3)
port 1, Tunnel 1 port 1, SDCC
Node 3
Third party
equipment
6-21