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Chapter 8 DHCPv4 (Code (Setup Client DHCP (ip address dhcp, no shutdown,…
Chapter 8 DHCPv4
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Helper Address
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In a complex hierarchical network, enterprise servers are usually located in a server farm. Clients are not on the same network so broadcast messages are not relayed.
A solution is to configure a Cisco IOS helper address. This solution enables a router to forward DHCPv4 broadcasts to the DHCPv4 server.
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DHCPv6
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Flags
The two flags are the Managed Address Configuration flag (M flag) and the Other Configuration flag (O flag).
Using different combinations of the M and O flags, RA messages have one of three addressing options for the IPv6 device, as shown in the figure:
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