How to view information such as interface status and packet loss

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You can run the display this interface command in the interface view to check the physical status, protocol status, traffic statistics, and the number of lost packets on an interface.

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Method used to view packet loss information if packets cannot be captured on interfaces
If you cannot capture packets on firewall interfaces but you want to view packet loss information, you can use the quintuple packet capture statistics function. The operation is as follows: 1. Create an ACL. [system] acl 3999 [system-acl-adv-3999] rule 5 permit icmp source 10.2.4.2 0 destination 10.2.2.2 0 [system] diagnose [system-diagnose] firewall statistic acl 3999 enable 3. View quintuple packet capture statistics information. system-view [sysname] diagnose [sysname-diagnose] display firewall statistics acl ******************************************************************************** * Summary of ACL-based packet statistics * ******************************************************************************** SLOT 1 CPU 1 RcvnFrag RcvFrag Forward DisnFrag DisFrag Obverse(pkts) : 100 0 95 0 0 Reverse(pkts) : 100 0 100 0 0 SLOT 1 CPU 3 RcvnFrag RcvFrag Forward DisnFrag DisFrag Obverse(pkts) : 2 0 2 0 0 Reverse(pkts) : 1 0 1 0 0 SLOT: 2 Fastforward Discard Obverse(pkts) : 98 0 Reverse(pkts) : 999 0 Detailed information of discarded packets: ******************************************************************************** * Detailed information of ACL-based packet statistics * ******************************************************************************** Protocol(udp) SourceIp(10.2.4.2) DestinationIp(10.2.2.2) SourcePort(333) DestinationPort(444) VpnIndex(public) RcvnFrag RcvFrag Forward DisnFrag DisFrag Obverse(pkts) : 2 0 2 0 0 Reverse(pkts) : 1 0 1 0 0 Discard detail information: Protocol(udp) SourceIp(10.2.4.2) DestinationIp(10.2.2.2) SourcePort(555) DestinationPort(666) VpnIndex(public) RcvnFrag RcvFrag Forward DisnFrag DisFrag Obverse(pkts) : 100 0 95 5 0 Reverse(pkts) : 100 0 100 0 0 Discard detail information: Packet filter packets discarded: 5 Please check the security policy and whether the interface added to a security zone. 4. After locating the problem, run the undo firewall statistics acl command to disable the quintuple packet statistics function to prevent adverse impact on device performance.

How to view information such as the interface status and packet statistics on a CE series switch
Perform the operations described on the right to view information such as the interface status and packet statistics.

How to view brief information about the interface status and traffic statistics
You can run the display interface brief command to view brief information about the status and configuration of an interface. display interface brief PHY: Physical *down: administratively down #down: LBDT down (l): loopback (s): spoofing (E): E-Trunk down (b): BFD down (e): ETHOAM down (dl): DLDP down (lb): LBDT block InUti/OutUti: input utility/output utility Interface PHY Protocol InUti OutUti inErrors outErrors Eth-Trunk2 down down 0% 0% 0 0 GigabitEthernet0/0/1 up up 0.01% 0% 0 0 GigabitEthernet0/0/2 down down 0% 0% 0 0 GigabitEthernet0/0/3 down down 0% 0% 0 0 GigabitEthernet0/0/4 down down 0.03% 0.05% 0 0 GigabitEthernet0/0/5 down down 32% 25% 0 0 GigabitEthernet0/0/6 down down 0% 0% 0 0 GigabitEthernet0/0/7 down down 0% 0% 0 0 GigabitEthernet0/0/8 down down 0% 0% 0 0 GigabitEthernet0/0/9 down down 0% 0% 0 0 GigabitEthernet0/0/10 down down 0.08% 0.02% 0 0 GigabitEthernet0/0/11 down down 0% 0% 0 0 GigabitEthernet0/0/12 down down 0% 0% 0 0 GigabitEthernet0/0/13 down down 0% 0% 0 0 GigabitEthernet0/0/14 down down 0% 0% 0 0 GigabitEthernet0/0/15 down down 0% 0% 0 0 GigabitEthernet0/0/16 down down 0% 0% 0 0 GigabitEthernet0/0/17 down down 0% 0% 0 0 GigabitEthernet0/0/18 down down 0% 0% 0 0 GigabitEthernet0/0/19 down down 0% 0% 0 0 GigabitEthernet0/0/20 down down 0% 0% 0 0 GigabitEthernet0/0/21 down down 0% 0% 0 0 GigabitEthernet0/0/22 down down 0% 0% 0 0 GigabitEthernet0/0/23 down down 0% 0% 0 0 NULL0 up up(s) 0% 0% 0 0 The InUti field in the command output indicates the average bandwidth usage of incoming packets on an interface in the last 300 seconds. The OutUti field in the command output indicates the average bandwidth usage of outgoing packets on an interface in the last 300 seconds. Inbound traffic on an interface = Interface rate x Average inbound bandwidth usage. Outbound traffic on an interface = Interface rate x Average outbound bandwidth usage. For example, the inbound traffic of GigabitEthernet0/0/5 is 320 Mbit/s (1000 Mbit/s x 32% = 320 Mbit/s) and the outbound traffic is 250 Mbit/s (1000 Mbit/s x 25% = 250 Mbit/s).

How to check ping packet loss on S series switches
For S series switches (except the S1700), you can run the ping command to check ping packet loss directly. For example: [HUAWEI] ping -c 100 192.168.2.21 PING 192.168.2.21: 56 data bytes, press CTRL_C to break Reply from 192.168.2.21: bytes=56 Sequence=1 ttl=124 time=1 ms ... --- 192.168.2.21 ping statistics --- 100 packet(s) transmitted //Total number of sent packets 91 packet(s) received //Total number of received packets 9.00% packet loss //Packet loss ratio round-trip min/avg/max = 1/1/19 ms You can also perform the following steps to configure traffic statistics collection to check ping packet loss: Configure traffic statistics collection for packets received by a switch. 1. Configure an ACL rule. [HUAWEI] acl number 3000 [HUAWEI-acl-adv-3000] rule permit icmp source 192.168.2.21 0 destination 192.168.2.20 0 [HUAWEI-acl-adv-3000] quit 2. Configure a traffic classifier. [HUAWEI] traffic classifier 3000 [HUAWEI-classifier-3000] if-match acl 3000 [HUAWEI-classifier-3000] quit3. Configure a traffic behavior. [HUAWEI] traffic behavior 3000 [HUAWEI-behavior-3000] statistic enable [HUAWEI-behavior-3000] quit 4. Configure a traffic policy. [HUAWEI] traffic policy 3000 [HUAWEI-trafficpolicy-3000] classifier 3000 behavior 3000 [HUAWEI-trafficpolicy-3000] quit 5. Apply the traffic policy to an interface. [HUAWEI] interface gigabitethernet 0/0/2 [HUAWEI-GigabitEthernet0/0/2] traffic-policy 3000 inbound [HUAWEI-GigabitEthernet0/0/2] quit 6. Check traffic statistics of packets received by the switch. [HUAWEI] display traffic policy statistics interface gigabitethernet 0/0/2 inbound verbose rule-base //The output is omitted. For more information about ping packet loss, see "Ping Failure Troubleshooting" or "S Series Switches packet Loss Troubleshooting" in "Maintenance Topics" in the Huawei S Series Campus Switches Maintenance Guide.

How to view network packet loss on the Huawei ViewPoint 9000 series endpoint
To view network packet loss on the Huawei ViewPoint 9000 series endpoint, perform the following operations: Log in to the web interface, choose Maintenance > System Status > Call Status to view the audio and video packet loss ratio. Packet loss ratios of both receiving and sending parties are displayed.

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