Hello,
i have 2x N3K-C3064PQ-10GX and each n3k has 2x 10G LACP from my upstream and 2x 10G LACP downlink to my access switch and both n3k are connected to same upstream router and i have run VPC between my n3k and i am 50x vlan with same config on both n3k and i am announcing 85.123.x.x/24 with no prepeding and such things on both nexus to my upstream router, so in this case some traffic reach my network from Nexus A and some of them reach me From Nexus B but in this case %80-90 of my traffic are reaching me from n3k B and here is my vpc config for n3k A :
vpc domain 1
peer-switch
role priority 20
system-priority 120
peer-keepalive destination 172.x.x.111 source 172.16.x.110
peer-gateway
auto-recovery
ip arp synchronize
interface port-channel20
vpc peer-link
and this is vpc config for n3k nexus B
vpc domain 1
peer-switch
role priority 30
system-priority 120
peer-keepalive destination 172.x.x.110 source 172.x.x.111
peer-gateway
auto-recovery
ip arp synchronize
interface port-channel20
vpc peer-link
and because i want to have active-active senario i do not want to use HSRP or VRRP and there are currently 2 questions :
1) on each nexus i am seeing the following log :
2020 Oct 15 11:03:02 ATM-N3K-Master %ARP-2-DUP_SRC_IP: arp [3565] Source address of packet received from 24e9.b3xx.xxxx on VlanYYYY(por
t-channel20) is duplicate of local, 185.x.x.x
is it normal ? can i ignore it ?
2) none of my users does not have any complaint in this senario but two of my customer told me when they are using such softwares such as teamspeak every 5-10 minutes they have packet resend, but i am not sure my users report are correct or not and i do not trust to these users report, so do you think this is related to my network or its from user side?
i was thinking maybe its related to ARP issue because for example this customer has ARP from nexus B for 10minutes and after 10minutes it will get Arp from nexus A but because i want to make sure about this i have put both vlan gateway and user assigned ip (Server IP) under ping for 5-6Hours and there were no packet loss ! whats your idea?
THank you.
