Re: Configuring the same DHCP into two-HSRP (Multigroup) router
Are you planning to configure DHCP server services on both routers?
Until DHCP servers can use a protocol that lets them communicate what addresses they're leasing out and to whom, it is generally advisable to have non-overlapping address pools on redundant DHCP servers for a given LAN. This is necessary to avoid duplicate IP addresses; that is, two separate DHCP clients receiving the same IP address from two different DHCP servers.
If you really want to configure the same pool of addresses on each router, you could then control what addresses were handed out by which router, by excluding IP addresses on each router. For example, if my pool has addresses xx.xx.xx.16 through xx.xx.xx.31, then I could exclude addresses .24 through .31 on the first router, and exclude addresses .16 through .23 on the second. One pool, with two non-overlapping subsets of addresses to be handed out.
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