Use this procedure to change the protection scheme for a pair of facilities:
• from 1+1 linear (OTN) to unprotected (applicable to OTM3 line facilities on 40G OCLD, Wavelength-selective 40G OCLD, or 40G UOCLD)
• from unprotected to 1+1 linear (OTN) (applicable to OTM3 line facilities on 40G OCLD, Wavelength-selective 40G OCLD, or 40G UOCLD)
• from 1+1/MSP linear to unprotected (applicable to OC192/STM64 on 40G XCIF)
• from unprotected to 1+1/MSP linear (applicable to OC192/STM64 on 40G XCIF)
• from unprotected to 2-Fiber BLSR/MS-SPRing (applicable to OC192/STM64 on 40G XCIF)
• from 2-Fiber BLSR/MS-SPRing to unprotected (applicable to OC192/STM64 on 40G XCIF)
• from 1+1 Port TPT to unprotected (applicable to OTM2 client or mapping facilities on 40G MUX OCI and OTM3 client or mapping facilities on 40G+
CFP OCI)
• from unprotected to 1+1 Port TPT (applicable to OTM2 client or mapping facilities on 40G MUX OCI and OTM3 client or mapping facilities on 40G+
CFP OCI)
The following apply when changing the protection scheme:
• For 40G OCLD or Wavelength-selective 40G OCLD, three 40G circuit packs form the protection triplet. Two 40G OCLDs or Wavelength-selective 40G OCLDs carrying the working and protection paths with a 40G OCI, 40/43G OCI, 40G+ CFP OCI, or 40G MUX OCI circuit pack in between.
The 40G triplet must be equipped in consecutive slots. The working 40G OCLD or Wavelength-selective 40G OCLD circuit pack must be in the left slot of triplet and the protection 40G OCLD or Wavelength-selective 40G OCLD circuit pack must be in the right slot of triplet. The valid protection group slots are {1, 2, 3}, {4, 5, 6}, {9, 10, 11}, and {12, 13, 14} on a 14-slot shelf; {1, 2, 3}, {4, 5, 6}, {13, 14, 15}, {16, 17, 18}, {21, 22, 23}, {24, 25, 26}, {33, 34, 35}, and {36, 37, 38} on a 32-slot shelf. {1, 2, 3} and {4, 5, 6} on a 7-slot shelf.
CAUTION
Risk of traffic loss
Changing the protection scheme is a service impacting procedure.
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities
• For 40G UOCLD circuit packs, the protection triplet occupies 5 slots, with the working 40G UOCLD in the two left slots of the triplet and the
protection 40G UOCLD in the two right slots of the triplet. Two 40G UOCLDs carrying the working and protected paths with a 40G MUX OCI, 40G OCI, 40/43G OCI, or 40G+ CFP OCI circuit pack in between. The valid protection group slots are {2-3, 4, 5-6} and {10-11, 12, 13-14} on a 14-slot shelf; {2-3, 4, 5-6}, {14-15, 16, 17-18}, {22-23, 24, 25-26}, and {34-35, 36, 37-38} on a 32-slot shelf; {2-3, 4, 5-6} on a 7-slot shelf.
• For 40G MUX OCI circuit packs (NTK525CF variant) in 1+1 Port TPT, the working and protection circuit packs are both in odd slots. The mate 40G OCLD/Wavelength-selective 40G OCLD must be provisioned in the even slot to the right. The valid protection group slots are:
— {1, 2} and {3, 4}, or {9, 10} and {11, 12} in a 14-slot shelf
— {1, 2} and {3, 4}, {13, 14} and {15, 16}, {21, 22} and {23, 24}, or {33, 34}
and {35, 36} in a 32-slot shelf
— {1, 2} and {3, 4} in a 7-slot shelf
• For 40G+ CFP OCI circuit packs in 1+1 Port TPT, the working and protection circuit packs are both in odd slots. The mate 40G
OCLD/Wavelength-selective 40G OCLD must be provisioned in the even slot to the right. The valid protection group slots are:
— {1, 2} and {3, 4}, or {9, 10} and {11, 12} in a 14-slot shelf
— {1, 2} and {3, 4}, {5, 6} and {7, 8}, {11, 12} and {13, 14}, {15, 16} and {17, 18}, {21, 22} and {23, 24}, {25, 26} and {27, 28}, {31, 32} and {33, 34}, or {35, 36} and {37, 38} in a 32-slot shelf
— {1, 2} and {3, 4} in a 7-slot shelf
• The CFPs equipped on the 40G+ CFP OCI that are connected to the TPT must be NTTA12BA.
• The port on which working and protection facilities are provisioned must be the same. For example, if the working client facility is provisioned on port 1 of the working 40G MUX OCI, the protection client facility must be provisioned on port 1 of the protection 40G MUX OCI.
• The LOFEF client port parameter must be set to Disabled when 1+1 Port TPT is provisioned.
• It is recommended that the LOFEF client port parameter be set to Disabled when 1+1 OTN line-side protection is provisioned. Enabling LOFEF may result in a longer switch time.
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities
• The XFPs equipped on the 40G MUX OCI circuit pack that is connected to the TPT must be NTTP84BA or NTTP86BA. For 1550 nm applications, the NTTP84AA XFP can be used, but only with the 10-channel TPT (NT0H59ACE5), which is the only qualified variant for 1550 nm applications. Performance is not guaranteed for other XFP types.
• Two 40G XCIF circuit packs and two 40G OCLD or Wavelength-selective 40G OCLD circuit packs (two pairs of 40G XCIF/40G OCLD or
Wavelength-selective 40G OCLD) along with two cross-connect circuit packs provide 1+1/MSP linear and 2-Fiber BLSR/MS-SPRing protection (40G TR protected group). For 1+1/MSP linear or 2-Fiber
BLSR/MS-SPRing protection, the valid protection group slots for 40G XCIF and 40G OCLD or Wavelength-selective 40G OCLD are: {1,2,3,4}, {5,6,9,10}, and {11,12,13,14} for a 14-slot shelf and {1,2,3,4}, {5,6,7,8}, {11,12,13,14}, {15,16,17,18}, {21,22,23,24}, {25,26,27,28}, {31,32,33,34}, and {35,36,37,38} for a 32-slot shelf. The 40G OCLD or
Wavelength-selective 40G OCLD circuit packs are equipped in odd slots.
The 40G XCIF circuit packs are equipped in even slots.
• The working and protection ports on 40G XCIF circuit packs must be horizontally aligned. For example, if the working port is on slot 2 port 3, then the protection port is on slot 4 port 3 (same port number). This rule applies irrespective of protection scheme being utilized. You can provision the ports to have different protection schemes.
• For all protection schemes that involve the 40G OCLD or
Wavelength-selective 40G OCLD circuit packs, the 40G OCLD or
Wavelength-selective 40G OCLD circuit packs for working and protection must be both C-band or both L-band but can be different variants. The working can be any NTK539Px PEC and the protection can be any NTK539Px or NTK539Rx PEC. Or vice versa.
• For 1+1/MSP linear and BLSR/MS-SPRing protection schemes, both working and protection OC192/STM64 facilities must be set to the same port mode.
• You cannot change the protection scheme from unprotected to 1+1/MSP linear if there are already path cross-connects provisioned on the facility that will become the protection facility.
• The BLSR/MS-SPRing scheme cannot be provisioned if there are already path cross-connects provisioned on either of the two facilities to be provisioned.
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities
• Before the 1+1 linear (OTN) protection is provisioned, equipment in working slot (left 40G OCLD or 40G UOCLD) must be in Equipment Mode of ‘M’; equipment in protection slot (right 40G OCLD or 40G UOCLD) must be in Equipment Mode of ‘MP’.
Prerequisites
To perform this procedure, you must:
• ensure you have all the documentation relating to deleting transponder and path cross-connects, editing a BLSR/MS-SPRing configuration, and changing a facility state. Refer to the “Deleting transponder connections”,
“Deleting path connections”, and “Editing a BLSR/MS-SPRing
configuration for a node” procedures in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320, and Procedure 1-13, Changing the primary state of a facility on page 1-177for details.
• use an account with a level 3 or higher UPC
Step Action
1 Select the required network element in the navigation tree.
2
3
Delete any transponder cross-connects on the protection slot OTM3 facility.
Refer to the “Deleting transponder connections” procedure in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320, for details.
Go to step 14.
If you are changing the protection scheme Then go to from unprotected to 1+1 linear (OTN) step 3 from 1+1 linear (OTN) to unprotected step 4
from unprotected to 1+1/MSP linear step 5
from 1+1/MSP linear to unprotected step 6
from unprotected to 1+1 Port TPT step 7
from 1+1 Port TPT to unprotected step 9
from unprotected to BLSR/MS-SPRing step 10
from BLSR/MS-SPRing to unprotected step 11
CAUTION
Risk of traffic loss
Ensure cross-connects are not carrying traffic before you delete them. Deleting a cross-connect that is carrying traffic causes traffic loss.
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities Step Action
4
Change the protection slot OTM3 facility in OTN 1+1 to the out-of-service state. See Procedure 1-13, Changing the primary state of a facility on page 1-177.
Go to step 14.
5
Ensure that any 1WAYPR or 2WAYPR (UPSR/SNCP protected) path cross-connects that exist on the working slot facility are changed to 1WAY or 2WAY (unprotected).
To change from protected (1WAYPR or 2WAYPR) to unprotected (1WAY or 2WAY), you must delete the protected path cross-connects and re-add them as unprotected path cross-connects. Refer to the “Deleting path connections”
procedure in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320 and Procedure 1-11, Adding a path connection on page 1-173.
Go to step 14.
6
Change the protection slot facility in 1+1 protection to the out-of-service state.
See Procedure 1-13, Changing the primary state of a facility on page 1-177.
Go to step 14.
7 Change the protection facility to the out-of-service state. See Procedure 1-13, Changing the primary state of a facility on page 1-177.
CAUTION
Risk of traffic loss
If you place a facility out-of-service, you can cause a loss of traffic.
CAUTION
Risk of traffic loss
Ensure cross-connects are not carrying traffic before you delete them. Deleting a cross-connect that is carrying traffic causes traffic loss.
CAUTION
Risk of traffic loss
If you place a facility out-of-service, you can cause a loss of traffic.
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities Step Action
8
Ensure that the protection Tx fiber is not connected to the TPT tray.
Go to step 14.
9 Ensure to disconnect the protection card fibers from the TPT tray. Change the protection facility to the out-of-service state. See Procedure 1-13, Changing the primary state of a facility on page 1-177.
Go to step 14.
10
Delete path cross-connects for the facilities that are in the unprotected configuration. Refer to the “Deleting path connections” procedure in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320.
Go to step 14.
11
Delete path cross-connects for the facilities that are in a BLSR/MS-SPRing configuration. Refer to the “Deleting path connections” procedure in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320.
12 Delete the APSIDs for facilities in the ring map of the BLSR/MS-SPRing configuration. Refer to the “Editing a BLSR/MS-SPRing configuration for a node” procedure in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320.
The APSIDs of the facilities must be deleted from the ring map at each network element in the BLSR/MS-SPRing configuration.
CAUTION
Risk of traffic loss
You must provision the TPT protection group before connecting the Tx fiber of the protection circuit pack to the TPT tray. Otherwise, traffic can be impacted.
CAUTION
Risk of traffic loss
Ensure cross-connects are not carrying traffic before you delete them. Deleting a cross-connect that is carrying traffic causes traffic loss.
CAUTION
Risk of traffic loss
Ensure cross-connects are not carrying traffic before you delete them. Deleting a cross-connect that is carrying traffic causes traffic loss.
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities Step Action
13
Change the east and west slot facilities in BLSR/MS-SPRing protection to the out-of-service state. See Procedure 1-13, Changing the primary state of a facility on page 1-177.
14 Select Protection Provisioning from the Protection drop-down menu to open the Protection Provisioning application.
15 Select the appropriate equipment or facility type and shelf from the Type and Shelf drop-down lists.
The provisioning data table opens.
16 Select an entry from the table.
When changing the protection scheme, provisioning the protection scheme for one of the facilities/circuit packs in a pair automatically provisions the protection scheme for the other facility/circuit packs in the pair.
17 Click Edit to open the Edit protection provisioning dialog box.
18 Select the radio button of the new protection scheme (Unprotected, 1+1 linear, MSP linear, 1+1 Port TPT, 2F BLSR/MS-SPRing, or 1+1).
19
20 Select the OTN G.873.1 remote standard if applicable.
You can change the Switch mode (Unidirectional or Bidirectional), Revertive mode (Yes or No), and Wait to restore time (if Revertive mode is Yes). See the
“Changing the protection parameters for a pair of facilities or equipment”
procedure in Part 2 of Configuration - Provisioning and Operating, 323-1851-310.
Go to step 23.
CAUTION
Risk of traffic loss
If you place a facility out-of-service, you can cause a loss of traffic.
If you are changing the protection scheme Then go to from unprotected to 1+1 linear (OTN) or 1+1 Port TPT step 20 from unprotected to 1+1/MSP linear step 21 from unprotected to BLSR/MS-SPRing step 22
from protected to unprotected step 23
Procedure 1-7 (continued)
Changing the protection scheme for a pair of facilities
Step Action
21 Select the required remote standard (G-841, GR253, or EN300) if applicable.
You can change the Switch mode (Unidirectional or Bidirectional) and Route diversity (On or Off). Route diversity is applicable to 40G XCIF only. See the
“Changing the protection parameters for a pair of facilities or equipment”
procedure in Part 2 of Configuration - Provisioning and Operating, 323-1851-310.
Go to step 23.
22 Select the required wait to restore ring time (0 to 12 minutes or Infinite) if applicable.
23 Click OK.
24 Click Yes in the confirmation dialog box.
When changing the protection scheme from 1+1 linear (OTN), 1+1 Port TPT, or 1+1/MSP linear to unprotected, any 1WAY or 2WAY transponder or path cross-connects that were provisioned exist only against the working facility.
If any existing path cross-connects are required to form part of new
UPSR/SNCP cross-connects, delete the 1WAY or 2WAY path cross-connects and create 1WAYPR or 2WAYPR path cross-connects as required. Refer to the “Deleting path connections” procedure in Part 1 of Configuration - Bandwidth and Data Services, 323-1851-320 and Procedure 1-11, Adding a path connection on page 1-173.
25 Connect the protection Tx fiber to the TPT tray if 1+1 Port TPT is provisioned.
26 Change the working (or east) and protection (or west) slot facilities back to the in-service state if applicable.
27 Repeat this procedure to provision the same protection scheme on the remaining nodes in the protection configuration if it has not been done.
28 Run the protection exerciser to detect potential protection misconfigurations.
Refer to the “Running/inhibiting the exerciser” procedure in Part 2 of Configuration - Provisioning and Operating, 323-1851-310.
—end—