Step 1 | config t
Example:
switch# config t
switch(config)#
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Enters global configuration mode.
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Step 2 | monitor erspan origin ip-address ip-address global
Example:switch(config)# monitor erspan origin
ip-address 10.0.0.1 global
| Configures the ERSPAN global origin IP address.
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Step 3 | no monitor session {session-number | all}
Example:switch(config)# no monitor session 3
| Clears the configuration of the specified ERSPAN session. The new session configuration is added to the existing session configuration.
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Step 4 | monitor session {session-number | all} type erspan-source
Example:switch(config)# monitor session 3 type erspan-source
switch(config-erspan-src)#
| Configures an ERSPAN source session.
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Step 5 | description description
Example:switch(config-erspan-src)# description erspan_src_session_3
| Configures a description for the session. By default, no description is defined. The description can be up to 32 alphanumeric characters.
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Step 6 | source {[interface [type slot/port[-port][, type slot/port[-port]]] [port-channel channel-number]] | [vlan {number | range}]} [rx | tx | both]
Example:switch(config-erspan-src)# source interface ethernet 2/1-3, ethernet 3/1 rx
Example:switch(config-erspan-src)# source interface port-channel 2
Example:switch(config-erspan-src)# source interface sup-eth 0 both
Example:switch(config-erspan-src)# source vlan 3, 6-8 tx
Example:switch(config-monitor)# source interface ethernet 101/1/1-3
| Configures the sources and traffic direction in which to copy packets. You can enter a range of Ethernet ports, a port channel, or a range of VLANs.
You can configure one or more sources, as either a series of comma-separated entries or a range of numbers. You can specify up to 128 interfaces. For information on the VLAN range, see the Cisco Nexus 3000 Series NX-OS Layer 2 Switching Configuration Guide, Release 5.x.
You can specify the traffic direction to copy as ingress, egress, or both. The default direction is both.
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Step 7 | Repeat Step 6 to configure all ERSPAN sources.
| (Optional) —
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Step 8 | destination ip ip-address
Example:switch(config-erspan-src)# destination ip 10.1.1.1
| Configures the destination IP address in the ERSPAN session. Only one destination IP address is supported per ERSPAN source session.
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Step 9 | vrf vrf-name
Example:switch(config-erspan-src)# vrf default
| Configures the VRF that the ERSPAN source session uses for traffic forwarding.
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Step 10 | ip ttl ttl-number
Example:switch(config-erspan-src)# ip ttl 25
| (Optional) Configures the IP time-to-live (TTL) value for the ERSPAN traffic. The range is from 1 to 255.
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Step 11 | ip dscp dscp-number
Example:switch(config-erspan-src)# ip dscp 42
| (Optional) Configures the differentiated services code point (DSCP) value of the packets in the ERSPAN traffic. The range is from 0 to 63.
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Step 12 | no shut
Example:switch(config-erspan-src)# no shut
| Enables the ERSPAN source session. By default, the session is created in the shut state.Note
| Only two ERSPAN source sessions can be running simultaneously.
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Step 13 | show monitor session {all | session-number | range session-range}
Example:switch(config-erspan-src)# show monitor session 3
| (Optional) Displays the ERSPAN session configuration.
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Step 14 | show running-config monitor
Example:switch(config-erspan-src)# show running-config monitor
| (Optional) Displays the running ERSPAN configuration.
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Step 15 | show startup-config monitor
Example:switch(config-erspan-src)# show startup-config monitor
| (Optional) Displays the ERSPAN startup configuration.
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Step 16 | copy running-config startup-config
Example:switch(config-erspan-src)# copy running-config startup-config
| (Optional) Copies the running configuration to the startup configuration.
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