Step 1 | configuration terminal
Example:
switch# config t
switch(config)#
|
Enters global configuration mode.
|
Step 2 | monitor erspan switch-id
switch-id
Example:
switch(config)# monitor erspan switch-id 1009
|
Configures the ERSPAN global switch ID. The switch ID is
applicable for all ERSPAN Type III sessions. Default value is 0.
|
Step 3 |
monitor erspan granularity 1588
Example:
switch(config)# monitor erspan granularity 1588
|
Specifies granularity for all ERSPAN Type III sessions. 1588 (in
seconds or nanoseconds) is the only option available and it is the default
value.
|
Step 4 | monitor session
span-session-number
type {erspan-source | local}
Example:
switch(config)# monitor session 1 type erspan-source
switch(config-erspan-src)#
|
Defines an ERSPAN source session using the session ID and the
session type, and places the command in ERSPAN monitor source session
configuration mode.
The
span-session-number argument range is
from 1 to 1024. The same session number cannot be used more than once.
The session IDs for source sessions are in the same global ID
space, so each session ID is globally unique for both session types.
The session ID (configured by the
span-session-number argument) and the session
type (configured by the
erspan-source keyword) cannot be changed once
entered. To change session ID or session type, use the
no version of the command to remove the session
and then recreate the session through the command with a new session ID or a
new session type.
|
Step 5 | header-type
version
Example:
switch(config-erspan-src)# header-type 3
|
Changes the ERSPAN source session from Type II to Type III.
Note
|
You can use the
no form of this command to change an
ERSPAN source session from Type III to Type II.
|
|
Step 6 | description
erspan_session_description
Example:
switch(config-erspan-src)# description source1
| (Optional)
Describes the ERSPAN source session.
The
erspan_session_description argument can be up to
240 characters and cannot contain special characters or spaces.
|
Step 7 | source interface {
ethernet
slot/chassis number |
portchannel
number }
Example:
switch(config-erspan-src)# source interface eth 1/1
|
Associates the ERSPAN source session number with the source ports
(1-255).
|
Step 8 | source vlan
number
Example:
switch(config-erspan-src)# source vlan 1
|
Associates the ERSPAN source session number with the VLANs
(1-4096).
|
Step 9 | source vsan
number
Example:
switch(config-erspan-src)# source vsan 1
|
On Cisco Nexus 5000 Series switches, specifies the VSAN ID number.
The range is 1 to 4093. On Cisco Nexus 5500 Series switches, you cannot
configure source VSANs.
|
Step 10 | destination ip
ip-address
Example:
switch(config-erspan-src)# destination ip 192.0.2.2
|
Configures the destination IP address in the ERSPAN session. Only
one destination IP address is supported per ERSPAN source session.
|
Step 11 | erspan-id
flow-id
Example:
switch(config-erspan-src)# erspan-id 5
|
Configures the flow ID to identify the ERSPAN flow. The range is
from 1 to 1023.
|
Step 12 | vrf {vrf-name |
default }
Example:
switch(config-erspan-src)# vrf default
|
Configures the VRF to use instead of the global routing table. You
can use a VRF that you have specifically configured or the default VRF.
|
Step 13 | [no]
filter access-group
acl_filter
Example:
switch(config-erspan-src)# filter access-group erspan_acl_filter
|
Configures the ACL filter for packets in this ERSPAN session. The
ACL filter can be a MAC or an IP access-list.
|
Step 14 | ip ttl
ttl-number
Example:
switch(config-erspan-src)# ip ttl 5
| (Optional)
Configures the IP time-to-live (TTL) value of the packets in the
ERSPAN traffic. Valid values are from 1 to 255. The default value is 255.
|
Step 15 | ip dscp
dscp_value
Example:
switch(config-erspan-src)# ip dscp 42
| (Optional)
Configures the IP Differentiated Services Code Point (DSCP) value
of the packets in the ERSPAN traffic. Valid values are from 0 to 63. The
default value is 0.
|
Step 16 | 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
|
On Cisco Nexus 5000 Series switches, only two ERSPAN source
sessions can be running simultaneously. On Cisco Nexus 5500 Series switches, up
to four source sessions can be running simultaneously.
|
|
Step 17 | exit
Example:
switch(config-erspan-src)# exit
switch(config)# exit
|
Updates the configuration and exits ERSPAN source session
configuration mode.
|
Step 18 | copy running-config startup-config
Example:
switch(config-erspan-src)# copy running-config startup-config
| (Optional)
Copies the running configuration to the startup configuration.
|