default slot - Documentation: 16: 54.19. pg_replication_slots ok 888 slot login

In versions PostgreSQL > 9.6, max_replication_slots default value is 10 which is enabled by default but not in 9.6 or lower versions which is disabled by default.

C8200L-1N-4T 1 NIM slot and 4 x 1-Gigabit Ethernet WAN ports 1G port density 4 Slots 1 NIM, 1 PIM Memory (DRAM) default 4 GB Storage (M.2 SSD) default 16 GB ...

Router Cisco ISR 4461 4 onboard GE, 3 NIM slots, 1 ISC slot, 3 SM slots, 8 GB Flash Memory default, 2 GB DRAM default (data plane), 4 GB ...