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Need Common Practices guidelines?
Looking for a list or guide for "Common Practices" regarding TCP/IP, WAN, LAN and WLAN networking.
I have a small business with about 10 computers on it. Using a Sonicwall TZ-170 Wireless for router. Server is crap, individual(s?) who fiddled with it never installed anything right. Printers are on funky addresses.
I need to map everything. Used LANsurveyor, works good. Changed all computer names so its easy to read and keep track of. All computers pulling Dynamic addresses from my DHCP client working in the Sonicwall. Had ISP change my dynamic to Static IP, so the ranges and gateway information is not up to date on the Server for its DHCP function to work. Planning on replacing it soon anyways.
I need to get a general idea of 192.168.X.X formatting for in-house IP's. Someone mentioned to me that .1.2-.1.10 would be for External servers, .11-.20 for this, and so on. I know this must be general knowledge to IT guys, recommendations? I will post again so keep an eye out for me.
oHailo's suggestion is sound, although he/she mixed masks. A /24 network would have a mask of 255.255.255.0 and can support upto 254 nodes. A network with a mask of 255.255.255.224 is a /27 and can support upto 32 nodes. Either will work given your small size but I recommend keeping it simple and going with the /24, which leaves plenty of growth.
Standards for reserving ranges of addresses vary company to company but here's one idea:
NETWORK RANGE (.1 to .30)
.1 = the router/gateway (virtual if using HSRP or VRRP)
.2 and .3 = reserved for router interfaces (HSRP or VRRP)
.10 and up = SNMP, protocol analyzers, etc.
SERVER RANGE (.50 to .70)
.50 to .70 for all servers (email, file/print, application, etc)
DHCP/CLIENT RANGE (.100 to .199)
.100 to .199 for all DHCP workstations, laptops, etc.
PRINTER RANGE (.220 to .240)
.220 to .240 for printers
Seems like overkill but it's simple and there's plenty of room for growth between ranges, if needed. You can insert ranges for other things if you see fit. Also if you use DHCP for your printers, you can make the ranges contiguous but exclude the printer range from the dynamic pool so you can define permanent reservations for them on your DHCP server.
Lastly, consider using the 3rd octet to identify different physical locations. 192.168.1.0 will be your main office. If you open a second office, it will be 192.168.2.0 and the ranges within the 4th octect stay the same as above for that second location.
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