R2511-HP MSR Router Series Interface Configuration Guide(V5)

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• If the two POS interfaces are directly connected, verify that the two ends use different clock mode
settings.
• If the problem persists, contact HP Support.
Symptom 2
The physical layer is up, but the link is down.
Solution
To resolve the problem:
• Verify that the two ends have matching clock mode, scrambling setting, and physical parameters.
• Verify that the two ends have the same link layer protocol.
• Verify that the two ends are assigned IP addresses.
• If the problem persists, contact HP Support.
Symptom 3
A great amount of IP packets are dropped.
Solution
To resolve the problem:
• Verify that the correct clock mode is configured on the POS interface.
Incorrect clock mode setting can incur a large amount of CRC errors.
• Verify that the two ends have the same MTU setting.
• If the problem persists, contact HP Support.