This topic describes the DHCP relay agent on the Cisco 8000 Series Router, which forwards DHCP packets between clients and servers that do not reside on a shared physical subnet.
A DHCP relay agent is a host that
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forwards DHCP packets between clients and servers that do not reside on a shared physical subnet, and
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differs from a normal IP router because it processes and forwards DHCP messages instead of transparently switching IP datagrams between networks.
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Feature Name |
Release Information |
Feature Description |
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Extending DHCP Relay agent support |
Release 26.3.1 |
Introduced in this release on: Modular Systems (8800 [LC ASIC: K100])(select variants only*) *This feature is supported on Cisco 88-LC1-48Y8F-EM line cards. |
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Extending DHCP Relay agent support |
Release 26.1.1 |
Introduced in this release on: Centralized Systems (8400 [ASIC: K100])(select variants only*) *This feature is now supported on Cisco 8404-SYS-D routers. |
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Extending DHCP Relay agent support |
Release 25.4.1 |
Introduced in this release on: Fixed Systems (8010 [ASIC: A100], 8700 [ASIC: K100])(select variants only*) * This feature is supported on:
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Extending DHCP Relay agent support |
Release 25.2.1 |
Introduced in this release on: Fixed Systems ((8010 [ASIC: A100], 8200 [ASIC: P100]), 8700 [ASIC: P100])(select variants only*); Modular Systems (8800 [LC ASIC: P100])(select variants only*) * This feature is supported on:
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Extending DHCP Relay agent support |
Release 25.1.1 |
Introduced in this release on: Modular Systems (8800 [LC ASIC: P100]) (select variants only*) This release introduces support for DHCP Relay Agent and DHCPv6 Relay Over BVI for IANA Address Allocation to Cisco Silicon One P100 ASIC-based systems. The feature, enabled by default, efficiently allocates IP addresses from a centralized DHCP server to clients across multiple subnets. It ensures that devices can receive IP addresses even when they are not on the same local network as the DHCP server. *The feature is supported on:
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