Example for Sending Trap Massages to the NMS When the Transmission Delay Threshold Is Exceeded

Networking Requirements

A Jitter test needs to be performed to configure a transmission delay threshold and enable the trap function as shown in Figure 1. After the jitter test is complete, SwitchA sends a trap message to the NMS when the RTT of the test packet exceeds the configured two-way transmission threshold. According to the traps received by the NMS, network administrators can easily locate the fault.

Figure 1 Networking diagram for sending traps to NMS when the threshold is exceeded

Configuration Roadmap

The configuration roadmap is as follows:

Configure SwitchC as the NQA server and configure the host IP address and port number.
Configure SwitchA as the NQA client, configure a threshold for the NQA alarm, and enable the trap function.
Create a jitter test instance on SwitchA.

Procedure

Configure an IP address for each interface and ensure reachable routes between switches, as shown in Figure 1.

# Configure SwitchA.

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] vlan 100
[SwitchA-vlan100] quit
[SwitchA] interface gigabitethernet 0/0/1
[SwitchA-GigabitEthernet0/0/1] port link-type hybrid
[SwitchA-GigabitEthernet0/0/1] port hybrid pvid vlan 100
[SwitchA-GigabitEthernet0/0/1] port hybrid untagged vlan 100
[SwitchA-GigabitEthernet0/0/1] quit
[SwitchA] interface vlanif 100
[SwitchA-Vlanif100] ip address 10.1.1.1 24
[SwitchA-Vlanif100] quit
[SwitchA] vlan 120
[SwitchA-vlan120] quit
[SwitchA] interface gigabitethernet 0/0/2
[SwitchA-GigabitEthernet0/0/2] port link-type hybrid
[SwitchA-GigabitEthernet0/0/2] port hybrid pvid vlan 120
[SwitchA-GigabitEthernet0/0/2] port hybrid untagged vlan 120
[SwitchA-GigabitEthernet0/0/2] quit
[SwitchA] interface vlanif 120
[SwitchA-Vlanif120] ip address 10.3.1.1 24
[SwitchA-Vlanif120] quit
[SwitchA] ip route-static 10.2.1.0 255.255.255.0 10.1.1.2

# Configure SwitchB.

<HUAWEI> system-view
[HUAWEI] sysname SwitchB
[SwitchB] vlan 100
[SwitchB-vlan100] quit
[SwitchB] vlan 110
[SwitchB-vlan110] quit
[SwitchB] interface gigabitethernet 0/0/1
[SwitchB-GigabitEthernet0/0/1] port link-type hybrid
[SwitchB-GigabitEthernet0/0/1] port hybrid pvid vlan 100
[SwitchB-GigabitEthernet0/0/1] port hybrid untagged vlan 100
[SwitchB-GigabitEthernet0/0/1] quit
[SwitchB] interface vlanif 100
[SwitchB-Vlanif100] ip address 10.1.1.2 24
[SwitchB-Vlanif100] quit
[SwitchB] interface gigabitethernet 0/0/2
[SwitchB-GigabitEthernet0/0/2] port link-type hybrid
[SwitchB-GigabitEthernet0/0/2] port hybrid pvid vlan 110
[SwitchB-GigabitEthernet0/0/2] port hybrid untagged vlan 110
[SwitchB-GigabitEthernet0/0/2] quit
[SwitchB] interface vlanif 110
[SwitchB-Vlanif110] ip address 10.2.1.1 24
[SwitchB-Vlanif110] quit

# Configure SwitchC.

<HUAWEI> system-view
[HUAWEI] sysname SwitchC
[SwitchC] vlan 110
[SwitchC-vlan110] quit
[SwitchC] interface gigabitethernet 0/0/1
[SwitchC-GigabitEthernet0/0/1] port link-type hybrid
[SwitchC-GigabitEthernet0/0/1] port hybrid pvid vlan 110
[SwitchC-GigabitEthernet0/0/1] port hybrid untagged vlan 110
[SwitchC-GigabitEthernet0/0/1] quit
[SwitchC] interface vlanif 110
[SwitchC-Vlanif110] ip address 10.2.1.2 24
[SwitchC-Vlanif110] quit
[SwitchC] ip route-static 10.1.1.0 255.255.255.0 10.2.1.1

Configure the IP address and port number for monitoring UDP services on SwitchC.
```
[SwitchC] nqa-server udpecho 10.2.1.2 9000
```

Create a jitter test instance on SwitchA.

[SwitchA] nqa test-instance admin jitter
[SwitchA-nqa-admin-jitter] test-type jitter
[SwitchA-nqa-admin-jitter] destination-address ipv4 10.2.1.2
[SwitchA-nqa-admin-jitter] destination-port 9000

Set a threshold on SwitchA.
# Configure the RTD threshold on SwitchA.
```
[SwitchA-nqa-admin-jitter] threshold rtd 20
```

Enable the trap function on SwitchA.

[SwitchA-nqa-admin-jitter] send-trap rtd

[SwitchA-nqa-admin-jitter] quit

Configure traps to be sent to the NMS.

[SwitchA] snmp-agent sys-info version v2c
[SwitchA] snmp-agent community write admin123
[SwitchA] snmp-agent target-host trap address udp-domain 10.3.1.2 params securityname switchA
[SwitchA] snmp-agent trap enable

Start the test instance.

[SwitchA] nqa test-instance admin jitter

[SwitchA-nqa-admin-jitter] start now

[SwitchA-nqa-admin-jitter] quit

Check the configuration.

# Check NQA test results on SwitchA.

[SwitchA] display nqa results test-instance admin jitter
 NQA entry(admin, jitter) :testflag is inactive ,testtype is jitter             
  1 . Test 1 result   The test is finished                                      
   SendProbe:60                         ResponseProbe:60                        
   Completion:success                   RTD OverThresholds number:0             
   Min/Max/Avg/Sum RTT:1/80/6/331       RTT Square Sum:9341                     
   NumOfRTT:60                          Drop operation number:0                 
   Operation sequence errors number:0   RTT Stats errors number:0               
   System busy operation number:0       Operation timeout number:0              
   Min Positive SD:10                   Min Positive DS:10                      
   Max Positive SD:40                   Max Positive DS:40                      
   Positive SD Number:10                Positive DS Number:6                    
   Positive SD Sum:130                  Positive DS Sum:100                     
   Positive SD Square Sum:2500          Positive DS Square Sum:2400             
   Min Negative SD:10                   Min Negative DS:10                      
   Max Negative SD:40                   Max Negative DS:30                      
   Negative SD Number:9                 Negative DS Number:7                    
   Negative SD Sum:130                  Negative DS Sum:100                     
   Negative SD Square Sum:2700          Negative DS Square Sum:1800             
   Min Delay SD:0                       Min Delay DS:0                          
   Avg Delay SD:2                       Avg Delay DS:2                          
   Max Delay SD:40                      Max Delay DS:39                         
   Packet Loss SD:0                     Packet Loss DS:0                        
   Packet Loss Unknown:0                Average of Jitter:14                    
   Average of Jitter SD:13              Average of Jitter DS:15                 
   Jitter out value:2.5940387           Jitter in value:2.1560009               
   NumberOfOWD:60                       OWD SD Sum:145                          
   OWD DS Sum:126                       TimeStamp unit: ms                      
   Packet Rewrite Number: 0             Packet Rewrite Ratio: 0%                
   Packet Disorder Number: 0            Packet Disorder Ratio: 0%               
   Fragment-disorder Number: 0          Fragment-disorder Ratio: 0%

# Check whether traps are generated in the trap buffer. (At the same time, the NMS also receives the traps.)

<SwitchA> display trapbuffer

Trapping buffer configuration and contents : enabled                            
Allowed max buffer size : 1024                                                  
Actual buffer size : 256                                                        
Channel number : 3 , Channel name : trapbuffer                                  
Dropped messages : 0                                                            
Overwritten messages : 3363                                                     
Current messages : 256 

#Nov 15 2012 16:57:21+06:00 SwitchA  NQA/4/RTDTHRESHOLD:OID 1.3.6.1.4.1.2011.5.25.111.6.16 NQA entry RTD over threshold. (OwnerIndex=admin, TestName=jitter)

Configuration Files

SwitchA configuration file

#
sysname SwitchA
#
vlan batch 100 120
#
interface Vlanif100
 ip address 10.1.1.1 255.255.255.0
#
interface Vlanif120
 ip address 10.3.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 120
 port hybrid untagged vlan 120
#
ip route-static 10.2.1.0 255.255.255.0 10.1.1.2
#
snmp-agent                                                                      
snmp-agent local-engineid 800007DB0300E009877890                                
snmp-agent community write cipher %^%#BuDX98e.>CF6_w@~U.TW&(2J*r`dw94l@E)TkK%%Zz>5(|/KEJ>]a+Qe&E-S}R/00tDR:8fy,}2LATeI%^%#              
snmp-agent sys-info version v2c v3                                              
snmp-agent target-host trap address udp-domain 10.3.1.2 params securityname cipher %^%#.VYh22r_VPzZ5m2azPQDYh^9:]r~oIFBl[#Aq95*%^%#  
snmp-agent trap enable 
#
nqa test-instance admin jitter                                                    
 test-type jitter                                                                 
 destination-address ipv4 10.2.1.2 
 destination-port 9000 
 threshold rtd 20 
 send-trap rtd 
#
return

SwitchB configuration file

#
sysname SwitchB
#
vlan batch 100 110
#
interface Vlanif100
 ip address 10.1.1.2 255.255.255.0
#
interface Vlanif110
 ip address 10.2.1.1 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 100
 port hybrid untagged vlan 100
#
interface GigabitEthernet0/0/2
 port link-type hybrid
 port hybrid pvid vlan 110
 port hybrid untagged vlan 110
#
return

SwitchC configuration file

#
sysname SwitchC
#
vlan batch 110
#
interface Vlanif110
 ip address 10.2.1.2 255.255.255.0
#
interface GigabitEthernet0/0/1
 port link-type hybrid
 port hybrid pvid vlan 110
 port hybrid untagged vlan 110
#
nqa-server udpecho 10.2.1.2 9000
#
ip route-static 10.1.1.0 255.255.255.0 10.2.1.1
#
return