Dell S3048-ON, Configuration Manual

Page: 601 / 1036

direction tx, if the MD port Gig 6/1 is an untagged member of any VLAN, all monitored frames that the MG port Gig 6/2 receives are
tagged with the VLAN ID of the MD port. Similarly, if BPDUs are transmitted, the MG port receives them tagged with the VLAN ID 4095.
This behavior might result in a difference between the number of egress packets on the MD port and monitored packets on the MG port.
Dell Networking OS Behavior : The platform continues to mirror outgoing traffic even after an MD participating in spanning tree protocol
(STP) transitions from the forwarding to blocking.
Configuring Port Monitoring
To configure port monitoring, use the following commands.
1 Verify that the intended monitoring port has no configuration other than no shutdown, as shown in the following example.
EXEC Privilege mode
show interface
2 Create a monitoring session using the command monitor session from CONFIGURATION mode, as shown in the following example.
CONFIGURATION mode
monitor session
monitor session type rpm/erpm
type is an optional keyword, required only for rpm and erpm
3 Specify the source and destination port and direction of traffic, as shown in the following example.
MONITOR SESSION mode
source
Example of Viewing Port Monitoring Configuration
To display information on currently configured port-monitoring sessions, use the
show monitor session
command from EXEC
Privilege mode.
Dell(conf)#monitor session 0
Dell(conf-mon-sess-0)#$source GigabitEthernet 1/1 dest GigabitEthernet 1/2 dir rx
Dell(conf-mon-sess-0)#show c
!
monitor session 0
source GigabitEthernet 1/1 destination GigabitEthernet 1/2 direction rx
Dell(conf-mon-sess-0)#
Dell(conf-mon-sess-0)#do show monitor session
SessID Source Destination Dir Mode Source IP Dest IP DSCP TTL Drop Rate
Gre-Protocol FcMonitor
------ ------ ------------ --- ---- --------- -------- ---- --- ---- ----
----------- ---------
0 Gi 1/1 Gi 1/2 rx Port 0.0.0.0 0.0.0.0 0 0 No N/
A N/A No
Dell(conf)#monitor session 0
Dell(conf-mon-sess-0)#source po 10 dest ten 1/2 dir rx
Dell(conf-mon-sess-0)#do show monitor session
SessID Source Destination Dir Mode Source IP Dest IP DSCP TTL Drop
Rate Gre-Protocol FcMonitor
------ ------ ----------- --- ---- --------- -------- ---- --- ----
---- ----------- ---------
0 Gi 1/1 Gi 1/2 rx Port 0.0.0.0 0.0.0.0 0 0 No N/
A N/A No
0 Po 10 Gi 1/2 rx Port 0.0.0.0 0.0.0.0 0 0 No N/
A N/A No
Dell(conf)#monitor session 1
Dell(conf-mon-sess-1)#source vl 40 dest ten 1/3 dir rx
Dell(conf-mon-sess-1)#flow-based enable
Dell(conf-mon-sess-1)#exit
Dell(conf)#do show monitor session
Port Monitoring 601