Troubleshooting Cpos Interfaces; Interface - H3C SR6600 Configuration Manual

Figure 7 Network diagram
Configuration procedure
1. Configure Router A:
# Set the clock mode to master on the 2.5 Gbps CPOS interface.
<RouterA> system-view
[RouterA] controller cpos 2/1/1
[RouterA-Cpos2/1/1] clock master
# Create a 155 Mbps POS channel interface.
[RouterA-Cpos2/1/1] oc-12 4
[RouterA-Cpos2/1/1-oc-12-4] oc-3 4
[RouterA-Cpos2/1/1-oc-12-4-oc-3-4] using oc-3c
# Assign an IP address to the 155 Mbps POS channel interface.
[RouterA-Cpos2/1/1-oc-12-4-oc-3-4] interface pos 2/1/1/4/4:0
[RouterA-pos2/1/1/4/4:0] ip address 10.110.4.1 255.255.255.0
2. Configure Router B:
# Create a 155 Mbps POS channel interface.
<RouterB> system-view
[RouterB] controller e-cpos 2/1/1
[RouterB-Cpos2/1/1] oc-12 4
[RouterB-Cpos2/1/1-oc-12-4] oc-3 4
[RouterB-Cpos2/1/1-oc-12-4-oc-3-4] using oc-3c
# Assign an IP address to the 155 Mbps POS channel interface.
[RouterB-Cpos2/1/1-oc-12-4-oc-3-4] interface pos2/1/1/4/4:0
[RouterB-pos2/1/1/4/4:0] ip address 10.110.4.2 255.255.255.0
Verifying the configuration
# Verify that Router A and Router B can ping each other at the POS channel interfaces. (Details not
shown.)

Troubleshooting CPOS interfaces

Loop and link layer protocol down state detected on serial
interfaces created for E1 channels on the CPOS interface
Symptom
The H3C router is connected to another vendor's router through E1 channels on CPOS interfaces
across an SDH network. PPP is used on the serial interface created for the E1 channel set.
The output from the display interface serial command shows the following errors:
•
The physical state of the serial interface is up, but the link protocol is down.
•
The serial interface is in a looped condition.
47