Исходное сообщение
"Cisco-dhcp-secondary ip address-ограничения" Отправлено regnalos, 08-Авг-17 23:19
В общем хоть в интернете и не нашёл точных цифр, но на практике понятно, что на cisco-DHCP, адреса выдаются только из первых 16 сетей. В данном случае: на интерфейсе 21 посеть, но включив: debug ip dhcp server events и debug ip dhcp server packet - видно, что cisco в поисках адреса проходит только 16 ПЕРВЫХ сетей из интерфейса: Aug  8 20:11:44.325: DHCPD: Sending notification of DISCOVER: Aug  8 20:11:44.325:   DHCPD: htype 1 chaddr 50f0.d3d4.715a Aug  8 20:11:44.325:   DHCPD: remote id 020a0000c0a80108000000000000 Aug  8 20:11:44.325:   DHCPD: circuit id 00000000 Aug  8 20:11:44.325: DHCPD: DHCPDISCOVER received from client 0150.f0d3.d471.5a on interface FastEthernet0/0. Aug  8 20:11:44.325: DHCPD: Seeing if there is an internally specified pool class: Aug  8 20:11:44.325:   DHCPD: htype 1 chaddr 50f0.d3d4.715a Aug  8 20:11:44.325:   DHCPD: remote id 020a0000c0a80108000000000000 Aug  8 20:11:44.325:   DHCPD: circuit id 00000000 Aug  8 20:11:44.325: DHCPD: there is no address pool for 192.168.1.8. Aug  8 20:11:44.325: DHCPD: there is no address pool for 192.168.6.2. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.10. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.18. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.26. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.34. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.42. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.50. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.58. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.66. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.74. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.82. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.90. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.98. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.106. Aug  8 20:11:44.329: DHCPD: there is no address pool for 192.168.6.114. и всё.... Придётся настраивать DHCP-сервер на LINUXe...