DHCP timeout on a vlan
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01-21-2022 07:40 AM
Have a Cat9404 configure with several VLAN and each having Ip helper-address DHCP IP configured for each. Seems as though one VLAN DHCP requests for clients are timing out, though somewhat sporadically. I don't believe its a rogue DHCP server on the VLAN and as far as i know, only happening on one VLAN.
Here is the DHCP section of a Show Tech DHCPV4
Message Received
BOOTREQUEST 1
DHCPDISCOVER 377041
DHCPREQUEST 970508
DHCPDECLINE 1783
DHCPRELEASE 680
DHCPINFORM 209273
DHCPVENDOR 0
BOOTREPLY 1
DHCPOFFER 361080
DHCPACK 1075473
DHCPNAK 236
Message Sent
BOOTREPLY 0
DHCPOFFER 0
DHCPACK 0
DHCPNAK 0
Message Forwarded
BOOTREQUEST 10
DHCPDISCOVER 3478790
DHCPREQUEST 9280023
DHCPDECLINE 17433
DHCPRELEASE 6361
DHCPINFORM 2025488
DHCPVENDOR 0
BOOTREPLY 1
DHCPOFFER 361080
DHCPACK 1075473
DHCPNAK 236
Shouldn't the received and forwarded be the same?
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Catalyst 9000
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01-26-2022 07:17 AM
ping without specify source make router/switch select the one nearest the destination.
to check ping DHCP server using the VLAN interface.

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