386 | Port Monitoring
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Port Monitoring
The MXL 10/40GbE Switch supports multiple source-destination statements in a monitor session, but 
there may only be one destination port in a monitoring session (Message 2).
The number of source ports FTOS allows within a port-pipe is equal to the number of physical ports in the 
port-pipe (n). However, n number of ports may only have four different destination ports (Message 3).
In Figure 21-1, ports 0/13, 0/14, 0/15, and 0/16 all belong to the same port-pipe. They are pointing to four 
different destinations (0/1, 0/2, 0/3, and 0/37). Now it is not possible for another source port from the same 
port-pipe (for example, 0/17) to point to another new destination (for example, 0/4). If you attempt to 
configure another destination, Message 3 appears. However, you can configure another monitoring session 
that uses one of previously used destination ports (Figure 21-2).
Figure 21-1.  Number of Monitoring Ports 
Note:  There is no limit to the number of monitoring sessions per system, provided that there are only four 
destination ports per port-pipe. If each monitoring session has a unique destination port, the maximum 
number of session is four per port-pipe.
Message 2  One Destination Port in a Monitoring Session Error Message
% Error: Only one MG port is allowed in a session.
FTOS#show mon session
     SessionID       Source       Destination     Direction      Mode        Type
     ---------       ------       -----------     ---------      ----        ----
 0       TenGig 0/13      TenGig 0/1          rx             interface   Port-based
 10       TenGig 0/14      TenGig 0/2          rx             interface   Port-based
 20       TenGig 0/15      TenGig 0/3          rx             interface   Port-based
 30       TenGig 0/16      TenGig 0/37         rx             interface   Port-based
FTOS(conf)#mon ses 300
FTOS(conf-mon-sess-300)#source tengig 0/17 destination tengig 0/4 direction tx
% Error: Exceeding max MG ports for this MD port pipe.
FTOS(conf-mon-sess-300)#
FTOS(conf-mon-sess-300)#source tengig 0/17 destination tengig 0/1 direction tx
FTOS(conf-mon-sess-300)#do show mon session
     SessionID       Source       Destination     Direction      Mode        Type
     ---------       ------       -----------     ---------      ----        ----
 0       TenGig 0/13      TenGig 0/1          rx             interface   Port-based
 10       TenGig 0/14      TenGig 0/2          rx             interface   Port-based
 20       TenGig 0/15      TenGig 0/3          rx             interface   Port-based
 30       TenGig 0/16      TenGig 0/37         rx             interface   Port-based
 300       TenGig 0/17      TenGig 0/1          tx             interface   Port-based
FTOS(conf-mon-sess-300)#