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Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 11 Optical Channel Circuits and Virtual Patchcords Reference
11.2 Virtual Patchcords
For OCH trunk to OCH filter PPCs, the following rules and conditions apply:
• GCC and DCC links are not required to create a PPC.
• PPCs can be created for preprovisioned or physically installed cards.
• The OCH trunk and OCH filter ports must be on the same wavelength. CTC checks the ports for
wavelength compatibility automatically during PPC provisioning.
• For OC-48/STM-16 and OC-192/STM-64 ITU-T line cards, the wavelength compatibility check is
performed only when the cards are installed. The check is not performed for preprovisioned cards.
• For all other preprovisioned cards, a wavelength compatibility check is not performed if card is set
to First Tunable Wavelength. The wavelength is automatically provisioned on the port, according to
the add/drop port that you chose when you created the PPC.
For OCH-trunk to OCH-trunk PPCs, the following rules and conditions apply:
• Patchcords can be created on preprovisioned or physically installed cards.
• Trunk-to-trunk connections require compatible wavelengths if the port is equipped. A check is
automatically performed during patchcord provisioning to ensure wavelength compatibility of ports.
• For connections involving one or more preprovisioned ports, no compatibility check is performed.
MMU — EXP A RX
EXP A TX
—
1. Line nodes only.
2. When Card Mode is OPT-PRE.
3. When Card Mode is OPT-LINE.
4. Line nodes with two OPT-PRE cards and no BST cards installed.
Table 11-4 Provisionable Patchcord Ports (continued)
Card OCH Trunk Port OTS Port OCH Filter Port
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