[show] Allow system with no ports in config db run without errors #1754
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What I did
Allow system with no ports in config db run without errors.
This is needed for modular system which should boot properly without line cards.
How I did it
Do not raise warning if ports dictionary is empty.
How to verify it
Run show interfaces status
Previous command output (if the output of a command-line utility has changed)
root@r-leopard-41:/home/admin# show interfaces status
Warning: failed to retrieve PORT table from ConfigDB!
Warning: failed to retrieve PORT table from ConfigDB!
Interface Lanes Speed MTU FEC Alias Vlan Oper Admin Type Asym PFC
*----------- ------- ------- ----- ----- ------- ------ ------ ------- ------ ----------
root@r-leopard-41:/home/admin#
New command output (if the output of a command-line utility has changed)
root@r-leopard-41:/home/admin# show interfaces status
Interface Lanes Speed MTU FEC Alias Vlan Oper Admin Type Asym PFC
*----------- ------- ------- ----- ----- ------- ------ ------ ------- ------ ----------
root@r-leopard-41:/home/admin#