Reference Guide
728 | Port Monitoring
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• The C-Series and S-Series may only have four destination ports per port-pipe. There is no limitation on 
the total number of monitoring sessions. 
Table 35-1 lists the maximum number of monitoring sessions per system. For the C-Series and S-Series, 
the total number of sessions is derived by consuming a unique destination port in each session, in each 
port-pipe.
Port Monitoring on E-Series
Both the E-Series TeraScale and E-Series ExaScale support the following.
• FTOS supports one destination (MG) port per monitoring session. The same destination port (MG) can 
be used in another monitoring session.
• One destination (MG) port can monitor up to 28 source (MD) ports.
• A port cannot be defined as both a source (MD) and a destination (MG) port (Message 1).
E-Series TeraScale
The E-Series TeraScale system supports 1 monitoring session per port-pipe. E-Series TeraScale supports a 
maximum of 28 port pipes.
Table 35-1.  Maximum Number of Monitoring Sessions per System
System Maximum Sessions System Maximum Sessions
C150 ∞ 
(Note)
E1200/E1200i (TeraScale) 28
C300 ∞ 
(Note)
E1200i (ExaScale) ∞
S50V, S50N ∞ 
(Note)
E600/E600i (TeraScale) 14
S25P ∞
(Note)
E600i (ExaScale) ∞
S55 ∞
(Note)
E300 6
S60 ∞ 
(Note)
S4810 and S4820T ∞ 
(Note)
Note: On the C-Series and S-Series, there is no limit to the number of monitoring sessions per system, 
provided that there are only 4 destination ports per port-pipe. If each monitoring session has a unique 
destination port, then the maximum number of session is 4 per port-pipe.
Message 1 Cannot define source (MD) and destination (MG) on same port
% Error: MD port is already being monitored.










