Solution - H3C s5800 series Troubleshooting Manual

Solution

To solve the problem:
1. Verify that no error packets have been received on the local port:
a. Execute the display interface command and check for error packets.
<H3C>display interface GigabitEthernet1/0/36
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Last 300 seconds output:
b. If the statistics are not zero, the following failures might occur:
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c. If the problem persists, contact H3C Support.
2. Verify that packets are not mistakenly filtered out by ACLs:
a. Examine the ACL and QoS policy configuration for packet filtering on the port, on the VLAN of
the port, or globally. If packets are mistakenly filtered out, modify the ACL or QoS policy
configuration.
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b. Examine whether packets are filtered out by automatically created ACLs.
The following features automatically create ACLs:
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GigabitEthernet1/0/36 current state: UP
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 000f-e200-002b
Input (total): 57 packets, 7838 bytes
0 unicasts, 50 broadcasts, 2 multicasts, 0 pauses
Input (normal): 52 packets, - bytes
0 unicasts, 50 broadcasts, 2 multicasts, 0 pauses
Input: 5 input errors, 0 runts, 0 giants, 0 throttles
5 CRC, 0 frame, - overruns, 0 aborts
- ignored, - parity errors
Interface hardware failure—To test such a failure, connect the cable that is connected to the
local port to a correctly operating port (for example, Port A) with the same configurations as
the local port. If Port A forwards traffic correctly, you can determine that the hardware of the
local port fails. In this event, you must replace the local port with a correctly operating port.
Transceiver module, fiber, or twisted pair failure—To test and solve such a failure, replace
the transceiver module, fiber, or twisted pair with a good one.
Inconsistent configurations—Verify that the configurations (such as speed and duplex mode)
of the peer are consistent with the local port. If they are inconsistent, modify the
configurations of the local port.
To display the ACL configuration on the port for packet filtering, execute the display
packet-filter command.
To display the QoS policy configuration on the port, execute the display qos policy
command.
To display the QoS policy configuration on the VLANs of the port, execute the display qos
vlan-policy command.
To display the global QoS policy configuration, execute the display qos policy global
command.
IP source guard—Configured by using the ip source binding or ip verify source command.
To display source guard binding entries, execute the display ip source binding or display
0 packets/sec 10 bytes/sec 0%
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