In local traffic mirroring, service traffic matching configured rules is copied to an observing port that is directly connected to a monitoring device for analysis and monitoring.
You can configure traffic mirroring using Modular QoS Command-Line Interface (MQC) and ACL. MQC-based traffic mirroring is complex to configure but supports more matching rules and can be applied to both the inbound and outbound directions. ACL-based traffic mirroring is easy to configure but supports fewer matching rules than MQC-based traffic mirroring.
You must dedicate observing ports for mirroring use and do not configure other services on them to prevent mirrored traffic and other service traffic from affecting each other. Do not configure any member port of an Eth-Trunk as an observing port. If you must do so, ensure that the bandwidth of service traffic on this port and the bandwidth occupied by the mirrored traffic do not exceed the bandwidth limit of the port.
If the mirroring function is deployed on many ports of a device, a great deal of internal forwarding bandwidth will be occupied, which affects the forwarding of other services. Additionally, if the mirrored port bandwidth is higher than the observing port bandwidth, for example, 1000 Mbit/s on a mirrored port and 100 Mbit/s on an observing port, the observing port will fail to forward all mirrored packets in a timely manner because of insufficient bandwidth, leading to packet loss.
Both physical interfaces and Eth-Trunks can be configured as mirrored ports. If an Eth-Trunk is configured as a mirrored port, its member ports cannot be configured as observing ports.
For the applicable products and versions of this configuration example, see Applicable product models and versions.
As shown in Figure 1, the science and technology department and administrative department of a company use 10.1.1.0/24 and 10.1.2.0/24 respectively to access the Internet or communicate with each other through the Switch. The monitoring device Server is directly connected to the Switch.
# Configure GE0/0/2 of the Switch as a local observing port.
<HUAWEI> system-view [HUAWEI] sysname Switch [Switch] observe-port 1 interface gigabitethernet 0/0/2 //Configure GE0/0/2 as a local observing port 1.
# Create a traffic classifier c1 on the Switch, and configure rules to match two types of traffic: traffic with source network segment 10.1.1.0/24 and destination TCP port number WWW and traffic with source network segment 10.1.1.0/24 and destination network segment 10.1.2.0/24.
[Switch] acl number 3000 //Create ACL 3000 to allow the packets with source network segment 10.1.1.0/24 and destination TCP port number WWW to pass through. [Switch-acl-adv-3000] rule permit tcp source 10.1.1.0 0.0.0.255 destination-port eq www [Switch-acl-adv-3000] quit [Switch] acl number 3001 //Create ACL 3001 to allow the packets with source network segment 10.1.1.0/24 and destination network segment 10.1.2.0/24 to pass through. [Switch-acl-adv-3001] rule permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255 [Switch-acl-adv-3001] quit [Switch] traffic classifier c1 operator or //Create a traffic classifier c1, and match ACL 3000 or ACL 3001. [Switch-classifier-c1] if-match acl 3000 [Switch-classifier-c1] if-match acl 3001 [Switch-classifier-c1] quit
# Create a traffic behavior b1 on the Switch, and define traffic mirroring in the traffic behavior to copy specified traffic to local observing port GE0/0/2.
[Switch] traffic behavior b1 //Create a traffic behavior b1 to mirror specified traffic to observing port 1.
[Switch-behavior-b1] mirroring to observe-port 1
[Switch-behavior-b1] quit
For fixed switches S6720-EI and S6720S-EI as well as cards (except X series cards) on modular switches, when configuring outbound traffic mirroring, do not configure other traffic behaviors (except the traffic statistics function of modular switches running V100R006 and earlier versions). From V200R001 to V200R010, the permit action generated by default when a traffic behavior is created on modular switches must also be deleted; otherwise, outbound traffic mirroring is ineffective.
# Create a traffic policy named p1 on the Switch, bind the traffic behavior and traffic classifier to the traffic policy, and apply the traffic policy to the inbound direction of GE0/0/1 to monitor specified traffic of the science and technology department.
[Switch] traffic policy p1 //Create a traffic policy p1 and bind the traffic behavior and traffic classifier to the traffic policy. [Switch-trafficpolicy-p1] classifier c1 behavior b1 [Switch-trafficpolicy-p1] quit [Switch] interface gigabitethernet 0/0/1 [Switch-GigabitEthernet0/0/1] traffic-policy p1 inbound //Apply the traffic policy p1 to the inbound direction of GE0/0/1. [Switch-GigabitEthernet0/0/1] return
# Check the traffic classifier configuration.
<Switch> display traffic classifier user-defined c1 User Defined Classifier Information: Classifier: c1 Operator: OR Rule(s) : if-match acl 3000 if-match acl 3001
# Check the traffic policy configuration.
<Switch> display traffic policy user-defined p1 User Defined Traffic Policy Information: Policy: p1 Classifier: c1 Operator: OR Behavior: b1 Mirroring to observe-port 1
# Check the observing port configuration.
<Switch> display observe-port ---------------------------------------------------------------------- Index : 1 Untag-packet : No Interface : GigabitEthernet0/0/2 ----------------------------------------------------------------------
# Check the mirroring configuration.
<Switch> display port-mirroring ---------------------------------------------------------------------- Observe-port 1 : GigabitEthernet0/0/2 ---------------------------------------------------------------------- Stream-mirror: ---------------------------------------------------------------------- Behavior Direction Observe-port ---------------------------------------------------------------------- 1 b1 - Observe-port 1 ----------------------------------------------------------------------
Switch configuration file
# sysname Switch # observe-port 1 interface GigabitEthernet0/0/2 # acl number 3000 rule 5 permit tcp source 10.1.1.0 0.0.0.255 destination-port eq www acl number 3001 rule 5 permit ip source 10.1.1.0 0.0.0.255 destination 10.1.2.0 0.0.0.255 # traffic classifier c1 operator or if-match acl 3000 if-match acl 3001 # traffic behavior b1 mirroring to observe-port 1 # traffic policy p1 match-order config classifier c1 behavior b1 # interface GigabitEthernet0/0/1 traffic-policy p1 inbound # return
Product Model |
Software Version |
Remarks |
---|---|---|
S2700-52P-EI, S2700-52P-PWR-EI |
V100R006C05 |
Only inbound traffic mirroring is supported. |
S2710-SI |
V100R006C05 |
|
S2720-EI |
V200R006C10, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S2750-EI |
V200R003C00, V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00 |
|
S3700-SI |
V100R006C05 |
|
S3700-EI |
V100R006C05 |
|
S3700-HI |
V200R001C00 |
|
S5700-LI |
V200R001C00, V200R002C00, V200R003(C00&C02&C10), V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00 |
|
S5700S-LI |
V200R001C00, V200R002C00, V200R003C00, V200R005C00SPC300, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00 |
|
S5710-C-LI |
V200R001C00 |
|
S5710-X-LI |
V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00 |
|
S5700-SI |
V200R001C00, V200R002C00, V200R003C00, V200R005C00 |
|
S5720-LI, S5720S-LI |
V200R010C00, V200R011C00, V200R011C10, V200R012(C00&C20), V200R013C00, V200R019C00, V200R019C10 |
|
S5720-SI, S5720S-SI |
V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S5720I-SI |
V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S5730-SI |
V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S5730S-EI |
V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S5735-L, S5735S-L |
V200R019C00, V200R019C10 |
|
S5735S-L-M |
V200R019C00, V200R019C10 |
|
S5735-S, S5735S-S |
V200R019C00, V200R019C10 |
|
S6720-LI, S6720S-LI |
V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S6720-SI, S6720S-SI |
V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
|
S5735-S-I |
V200R019C10 |
Only inbound traffic mirroring is supported. |
S5700-EI |
V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02&C03) |
Outbound traffic mirroring is supported since V200R005. |
S5710-EI |
V200R001C00, V200R002C00, V200R003C00, V200R005(C00&C02) |
|
S5700-HI |
V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00SPC500&C01&C02) |
|
S5710-HI |
V200R003C00, V200R005(C00&C02&C03) |
|
S6700-EI |
V200R001(C00&C01), V200R002C00, V200R003C00, V200R005(C00&C01&C02) |
|
S5720-EI |
V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
- |
S5720-HI |
V200R006C00, V200R007(C00&C10), V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
- |
S5730-HI |
V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
- |
S5731-H |
V200R013C02, V200R019C00, V200R019C10 |
- |
S5731-S, S5731S-S |
V200R019C00, V200R019C10 |
- |
S5731S-H |
V200R019C00, V200R019C10 |
- |
S5732-H |
V200R019C00, V200R019C10 |
- |
S6720-EI |
V200R008C00, V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
- |
S6720S-EI |
V200R009C00, V200R010C00, V200R011C00, V200R011C10, V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
- |
S6720-HI |
V200R012C00, V200R013C00, V200R019C00, V200R019C10 |
- |
S6730-S, S6730S-S |
V200R019C00, V200R019C10 |
- |
S6730-H |
V200R013C02, V200R019C00, V200R019C10 |
- |
S6730S-H |
V200R019C10 |
- |
S7703, S7706, S7712 |
V200R001(C00&C01), V200R002C00, V200R003C00, V200R005C00, V200R006C00, V200R007C00, V200R008C00, V200R009C00, V200R010C00, V200R011C10, V200R012C00, V200R013C00, V200R013C02, V200R019C00, V200R019C10 |
- |
S7706 PoE |
V200R013C00, V200R019C00, V200R019C10 |
- |
S7703 PoE |
V200R013C00, V200R019C00, V200R019C10 |
- |
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