ā02-02-2023 11:08 PM
hi ,
we have two nexus switch in vpc and 5 access 2960 switch in stack. i am trying to config dhcp on catalyst 2960 and dhcp relay under L3 vlan on both nexus. it's not working.
ā02-03-2023 12:17 AM
your nexus acting as DHCP Server ? what nexus switch and code running on it.
can you post config information from nexus.also client side (switch config for the DHCP relay or helper address config)
ā02-03-2023 12:33 AM
Hi Balaji,
Thanks for your revert.
correct me if i am wrong, we need DHCP server and i got some article where i found we can not create dhcp on nexus switch.
so what i am doing is , i have 2 L3 vlans on Nexus, i am creating Dhcp on my edge switch and call dhcp relay on nexus on those vlan, but it is not working.
please find below for your reference.
Edge switch:-
ip dhcp pool JFL-LAN
import all
vrf default
network 10.219.4.0 255.255.252.0
default-router 10.219.4.1
update arp
on Nexus:
interface Vlan12
no shutdown
no ip redirects
ip address *.*.*.*/**
no ipv6 redirects
hsrp 12
preempt
priority 110
ip *.*.*.*
ip dhcp relay address *.*.*.*
please suggest.
ā02-03-2023 02:23 AM
it straight config on issue,
but are the SW is connect to both vPC pair ?
ā02-03-2023 02:30 AM
yes, i had configured lacp between both nexus and edge switch.
ā02-04-2023 02:33 AM
are you config any peer-gateway
ā02-04-2023 01:48 AM
Hello,
the default router in the DHCP pool is the HSRP standby IP address I assume ? Post the configs without the IP addresses being banked out. What Vlan(s) is/are the clients in ? Post a schematic drawing of your entire topology, so we can see where the clients are sitting, and why you need the helper-address.
ā02-04-2023 06:55 AM
why are you mentioning VRF here?
ā02-04-2023 07:09 AM
i was tried with vrf but i was not worked
ā02-04-2023 06:45 AM
ā02-04-2023 06:51 AM
only add peer-gateway under vPC domain if you not config it.
ā02-05-2023 10:06 PM
Hi MHM,
i had configured peer destination ip under Vpc.
ā02-06-2023 01:32 AM
I am talking about peer-gateway for vPC, for more detail check link above
ā02-04-2023 07:08 AM - edited ā02-04-2023 07:08 AM
what is the model of Nexus - also why you need to VRF question
for L3 routing on NEXUS you need to check this :
https://bradhedlund.com/2010/12/16/routing-over-nexus-7000-vpc-peer-link-yes-and-no/
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