Administrator Guide
configure up to 128 source ports in a monitoring session. Only one destination port is supported in a monitoring session. The platform
supports multiple source-destination statements in a single monitor session.
The maximum number of source ports that can be supported in a session is 128.
The maximum number of destination ports that can be supported depends on the port mirroring directions as follows:
• 4 per port pipe, if the four destination ports mirror in one direction, either rx or tx.
• 2 per port pipe, if the two destination ports mirror in bidirection.
• 3 per port pipe, if one of the destination port mirrors bidirection and the other two ports mirror in one direction (either rx or tx).
Example of Changing the Destination Port in a Monitoring Session
In the following examples, ports 1/13, 1/14, 1/15, and 1/16 all belong to the same port-pipe. They are pointing to four different destinations
(1/1, 1/2, 1/3, and 1/37). Now it is not possible for another source port from the same port-pipe (for example, 1/17) to point to another
new destination (for example, 1/4). If you attempt to configure another destination (to create 5 MG port), this message displays: %
Error will be thrown in case of RPM and ERPM features.
DellEMC(conf-mon-sess-5)#do show moni session
SessID Source Destination Dir Mode Source IP Dest IP DSCP TTL
Drop Rate Gre-Protocol FcMonitor
------ ------ ----------- --- ---- --------- -------- ---- ---
---- ---- ----------- ---------
1 Gi 1/1 Gi 2/1 both Port N/A N/A 0 0
No N/A N/A yes
2 Gi 1/1 Gi 2/2 both Port N/A N/A 0 0
No N/A N/A yes
3 Gi 1/1 Gi 2/3 both Port N/A N/A 0 0
No N/A N/A yes
4 Gi 1/1 Gi 2/4 both Port N/A N/A 0 0
No N/A N/A yes
5 Gi 1/1 Gi 2/5 both Port N/A N/A 0 0
No N/A N/A yes
DellEMC(conf-mon-sess-5)#
DellEMC(conf)#mon ses 300
DellEMC(conf-mon-sess-300)#source gig 1/17 destination gig 1/4 direction tx
% Error: Exceeding max MG ports for this MD port pipe.
DellEMC(conf-mon-sess-300)#
DellEMC(conf-mon-sess-300)#source gig 1/17 destination gig 1/1 direction tx
DellEMC(conf-mon-sess-300)#do show mon session
SessID Source Destination Dir Mode Source IP Dest IP DSCP TTL
Drop Rate Gre-Protocol FcMonitor
------ ------ ----------- --- ---- --------- -------- ---- ---
---- ---- ----------- ---------
0 Gi 1/13 Gi 2/1 rx interface 0.0.0.0 0.0.0.0 0 0
No N/A N/A yes
10 Gi 1/14 Gi 2/2 rx interface 0.0.0.0 0.0.0.0 0 0
No N/A N/A yes
20 Gi 1/15 Gi 2/3 rx interface 0.0.0.0 0.0.0.0 0 0
No N/A N/A yes
30 Gi 1/16 Gi 2/7 rx interface 0.0.0.0 0.0.0.0 0 0
No N/A N/A yes
300 Gi 1/17 Gi 1/1 rx interface 0.0.0.0 0.0.0.0 0 0
No N/A N/A yes
DellEMC#
Example of Configuring Another Monitoring Session with a Previously Used Destination Port
DellEMC(conf)#monitor session 300
DellEMC(conf-mon-sess-300)#$ destination gigabitethernet 1/4 direction tx
DellEMC(conf-mon-sess-300)#
DellEMC(conf-mon-sess-300)#do show monitor session
SessID Source Destination Dir Mode Source IP Dest IP DSCP
TTL Drop Rate Gre-Protocol FcMonitor
------ ------ ----------- --- ---- --------- -------- ----
--- ---- ---- ----------- ------
0 Te 1/50 Te 1/51 rx Port N/A N/A N/A
N/A No N/A N/A yes
1 Gi 1/45 Gi 1/46 tx Port N/A N/A N/A
N/A No N/A N/A yes
2 NONE NONE N/A N/A N/A N/A N/A
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Port Monitoring