Table 3-1 Protection Types - Cisco ONS 15310-MA SDH Procedure Manual

Chapter 3 Turn Up a Node
Table 3-1
Type
1:1
1+1
Unprotected
The ONS 15310-MA SDH and the 15310E-CTX-K9 card do not support SNCP switching for VC3
Note
circuits containing BIP errors. The SF/SD alarm is not raised for VC3 circuits.
Complete one or more of the following tasks depending on the protection groups you want to create:
Step 2
1:1 protection groups are created automatically when two electrical cards are physically installed or
•
preprovisioned and do not require provisioning.
"DLP-H242 Create a 1+1 Protection Group for the ONS 15310-MA SDH" task on page 18-48
•
Note
78-19416-01
Protection Types
Cards
E1_21_E3_DS3_3
E1_63_E3_DS3_3
15310E-CTX-K9
Any
If a protect card is not installed, you can complete the
procedure on page 1-33 and continue with the card protection provisioning.
Cisco ONS 15310-MA SDH Procedure Guide, Release 9.1 and Release 9.2
Description and Installation Requirements
Pairs one working card with one protect card. 1:1 protection
groups are created automatically and do not require
provisioning. There are two sets of paired expansion slots for the
electrical cards. Card slots 1 and 2 are a pair and slots 5 and 6 are
a pair. The pairing is due to the configuration of the backplane
connectors. When two electrical cards are plugged into either of
the card slot pairs, a 1:1 protection group is automatically
created for the two cards, if possible. If a protection group
cannot be created, one of the cards goes into the Mismatched
Equipment Alarm (mismatchofEquipment) state, because the
15310-MA SDH cannot support two unprotected electrical cards
in the 1–2 or 5–6 card slot pairs. The 1:1 automatic protection
group is created when the second electrical card of a pair is either
plugged in or is preprovisioned. All ONS 15310-MA SDH
electrical cards, by default, are made part of a 1:1 protection
group. The 1:1 protection group cannot be deleted. For more
information, refer to the "Card Protection" chapter and the card
reference material specific to the card in the
Cisco ONS 15310-MA SDH Reference Manual.
Pairs a working STM-M port with a protect STM-M port. 1+1
protection can be created between any of the four total optical
ports in any combination. For example, 1+1 can created between
two ports on the same CTX 2500 card, or it can be created
between port 2-1 on one 15310E-CTX-K9 and port 1-1 on the
second CTX 2500. You can create a maximum of two 1+1
protection groups, one with the working port on slot 3 and one
with the working port on slot 4. The same card can have both
working and protect ports on it. 1+1 protection can be revertive
or nonrevertive, bidirectional or unidirectional.
Unprotected cards can cause signal loss if a card fails or incurs
a signal error. Unprotected is the default for Ethernet cards and
for the first electrical card plugged into any of the IO slots. For
more information about electrical cards, see 1:1 in this table.
Before You Begin
"NTP-H162 Preprovision a Card Slot"
3-11