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Line Protocol DOWN on POS Interface caused by Unmatched CRC type used between NE-40 and Cisco Cat-6500/ Juniper M10 POS Interface

Publication Date:  2012-07-27 Views:  100 Downloads:  0

Issue Description

Line protocol on both POS interface (Huawei NE-40 and Cisco Cat-6500/Juniper  M10 routers) can not UP.

Alarm Information

CRC Error counter on both side POS interface of the routers is increased significantly.

Handling Process

Configure Juniper/Cisco routers to use 32 bit CRC type.

Root Cause

Missmatched CRC type used between Huawei NE-40 router on POS Interface and Cisco/Juniper routers caused the line protocol between Huawei and Juniper/Cisco routers cannot UP.
Huawei NE-40 used 32 bit CRC type by default, since Juniper M10 and Cisco Cat-6500 used 16 bit CRC type by default.

Suggestions

CRC type used on POS interface could be shown by POS interface display information command.

END