Encap-Mismatch-P - Cisco ONS 15310-CL Troubleshooting Manual

1.7.55 ENCAP-MISMATCH-P

Step 2 If the alarm does not clear, log into the Technical Support Website at http://www.cisco.com/techsupport
for more information or call Cisco TAC (1 800 553-2447) in order to report a Service-Affecting (SA)
problem.
1.7.55 ENCAP-MISMATCH-P
The Encapsulation C2 Byte Mismatch Path alarm applies to the ML-100T-8 Ethernet card. It occurs
when the first three following conditions are met and one of the last two is false:
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•
•
•
•
(This is in contrast to the
ENCAP-MISMATCH-P alarm to be raised, there is a mismatch between the received and expected C2
byte, with either the expected byte or received byte value being 0x01.
For example, an ENCAP-MISMATCH-P alarm is raised if a circuit created between two ML-100T-8
cards has generic framing procedure (GFP) framing provisioned on one end and high-level data link
control (HDLC) framing with LEX encapsulation provisioned on the other. The GFP-framing card
transmits and expects a C2 byte of 0x1B, while the HDLC-framing card transmits and expects a C2 byte
of 0x01.
A mismatch between the transmit and receive ports on any of the following parameters can cause the
alarm:
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•
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This alarm is demoted by PLM-P or PLM-V.
By default, an ENCAP-MISMATCH-P alarm causes an ML-100T-8 card data link to go down. This
Note
behavior can be modified using the Cisco IOS command line interface (CLI) command no pos trigger
defect encap.
For more information about the ML-100T-8 Ethernet card, refer to the Cisco ONS 15310-CL and
Note
Cisco ONS 15310-MA Ethernet Card Software Feature and Configuration Guide.
Cisco ONS 15310-CL and Cisco ONS 15310-MA Troubleshooting Guide, R7.0
1-48
Default Severity: Critical (CR), Service-Affecting (SA)
SONET Logical Object: STSTRM
The received C2 byte is not 0x00 (unequipped).
The received C2 byte is not a PDI value.
The received C2 does not match the expected C2.
The expected C2 byte is not 0x01 (equipped unspecified).
The received C2 byte is not 0x01 (equipped unspecified).
"PLM-P" alarm on page
Mode (HDLC, GFP-F)
Encapsulation (LEX, HDLC, PPP)
CRC size (16 or 32)
Scrambling state (on or off)
Chapter 1
1-116, which must meet all five criteria.) For an
Alarm Troubleshooting
78-17235-01