Dell SmartFabric OS10 User Guide Release 10.5.3

The following restrictions and limitations apply to this feature:

• The DHCPv4 relay counters do not persist when system reloads occur. You must configure the counters after the system reloads.
• In a VLT topology, each VLT node maintains its own DHCPv4 relay counter independently. Execution of any clear command affects only the individual node.
• The DHCPv4 relay agent maintains a counter per interface only in client-connected interfaces where helper address is configured.
• The show commands display only the DHCP counter statistics of the interface that are configured with the helper address.
• Each counter is 64 bits long; so, when the DHCPv4 relay counter reaches its maximum value of 2^64, it resets to zero. A system log message is also delivered by the system.
• Interface level counters are reset to 0 when the first helper address is configured in the interface.
• For DHCP unicast messages, the DHCPv4 relay agent counters are valid only if server-identifier-override is enabled.
• The DHCPv4 relay counters for the PVLAN secondary VLANs are maintained in PVLAN primary VLAN. This limitation applies because the secondary VLANs are L2 VLANs where DHCPv4 helper address configuration is not allowed.
• To deliver the DHVPv4 relay counter statistics, the system takes up to a maximum of 1 minute.