Planning to fixing IP Address conflict issue in a 2 DHCP Server environment - 
Win2k3R2 STD SP2. For some strange reason old Admin
has configured both the server with identical ranges on both the servers and 
much to my surprise apart for occassional IP address conflict - it is running 
fine. Machine names are getting registered at both the DHCP Servers. 

I am trying this lists expertise in this matter with the following. 

Findings: 

+ Every subnet is /24

+ In-total there are 20 Scopes defined for a 10 floor building and scope per 
wing. Each wing has no more than 150 computers 

+ Current usage suggest no floor with more than 130 DHCP provided IPs.  

+ IP Addresses 1-10 and 240-254 must be excluded for printers, Projectors, 
security and other static mapping devices. 

+ Both servers i.e. ServerA and ServerB are configured with same information. 

Question: What is the most efficient and best-practice-way to define DHCP Scope 
splits ?

(since 1-10 and 240-254 are Excluded across all subnets)

ServerA : 11-160        ; approx 150 IP Addresses       (Highest floor 
utilization is 130)
Exclude (161-239)

ServerB :  161-239      : approx 70 IP addresses
Exclude (11-160)

Is above approach correct?


Question : Switches are configured with IP helpers for both the servers.. How 
does IP helper works in Cisco switch environment? Does it select on round-robin 
basis or can it be configured that way? 


Question: How do I ensure that the IPs are either requested from both the 
servers or when ServerA is exhausted automatically rollover to ServerB for 
further requests?


Perhaps asking too many questions.. Thanks in advance,







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