DHCP HA in Cisco switches 6504
Posted on 2014-09-27
Hi - We have 2 Cisco 6504 switches configured as DHCP server to provide IP's to data and voice network. Both switches are configured will full IP subnet scope and it was working fine since 6 years but now suddenly it stops distributing IP addresses which works only after we clear all arp from both switches and disable DHCP on second switch.
Sometime its stops giving IP address only for voice network even though many IP's are free for distribution.
Well we can split the scope to half between both switches but IP conflict was never a problem, i believe cisco ios manages that not to assign same IP from both switch.
What the best way to fix this problem?