How to display all active sessions grouped by service or protocol on USG FLEX H using CLI?

Zyxel_Emily

Question:
How to display all active sessions (forwarding traffic) grouped by service or protocol on USG FLEX H using CLI?

Answer:
usgflex200h> show conn summary service
show-conn-summary
ok
conn 1
service HTTPS
rx_bytes 27301881
tx_bytes 878989
session_count 37
..
conn 2
service Any-TCP
rx_bytes 9571
tx_bytes 2979
session_count 1
..
count 2
..
..