Issue description:
On the interface of switch, we find have the discard packets, it is like below.
<HUAWEI> display interface gigabitethernet 0/0/1
GigabitEthernet 0/0/1 current state : UP
Line protocol current state : UP
Description:
Switch Port,Link-type : access(negotiated), PVID : 1, TPID : 8100(Hex), The Maximum Frame Length is 9216
IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is 0025-9ef4-abcd
Current system time: 2012-06-05 10:56
Port Mode: COMMON FIBER, Transceiver: 1000_BASE_SX_SFP
Speed : 1000, Loopback: NONE
Duplex: FULL, Negotiation: ENABLE
Mdi : -, Flow-control: DISABLE
Last 300 seconds input rate 9707408 bits/sec, 13678 packets/sec
Last 300 seconds output rate 326788584 bits/sec, 32824 packets/sec
Input: 37059350917 packets, 3285287717246 bytes
Unicast: 37056668221, Multicast: 56216
Broadcast: 2626480, Jumbo: 0
Discard: 0, Pause: 0
Frames: 0
Total Error: 0
CRC: 0, Giants: 0
Jabbers: 0, Fragments: 0
Runts: 0, DropEvents: 0
Alignments: 0, Symbols: 0
Ignoreds: 0
Output: 74176982789 packets, 90378130553106 bytes
Unicast: 74170825249 , Multicast: 1592999
Broadcast: 4564541, Jumbo: 0
Discard: 5079924, Pause: 0
Total Error: 0
Collisions: 0, ExcessiveCollisions: 0
Late Collisions: 0, Deferreds: 0
Buffers Purged: 0
Input bandwidth utilization threshold : 80.00%
Output bandwidth utilization threshold: 80.00%
Input bandwidth utilization : 0.97%
Output bandwidth utilization : 32.68%
Issue analysis:
We can use the command: reset counters interface gigabitethernet 0/0/1
<HUAWEI> reset counters interface gigabitethernet 0/0/1
And then check the interface counters again, if we observe the counter of discard packets is growing, We can basically judge that it is due to insufficient bandwidth or burst traffic in the network.
Solution description:
We need to expand the bandwidth.
We can create eth-trunk interface bind two or more physical interfaces. This post was last edited by l00188222 at 2012-06-05 10:56.