Hi, we have a client which has two 5710 switches IRF stack. We can not understand why IRF stopped forwarding traffic for ~2 min when IRF stack active member was shutdown and after few minutes was turned back to power.
Standby member took active member role, when active member went down and, but problem occurs when old active member tries to come back. Do we have active-active situation and we need to set up MAD BFD ir MAD LACP or MAD ARP? Or this is not the case?
MAC persistent always is turned on.
Deploying a Multi Active Detection (MAD) mechanism on a IRF is always a good practice.
Could you share your IRF's sanitized configuration?
Done that, did not help, used BFD MAD over direct VLAN
A good reason to share your sanitized IRF configuration. Could you share it?
Hi here is all configuration,system-working-mode standard
#irf mac-address persistent alwaysirf auto-update enableundo irf link-delayirf member 1 priority 32irf member 2 priority 1
interface Ten-GigabitEthernet1/0/2port link-mode bridgeport access vlan 4000undo stp enable
interface Ten-GigabitEthernet2/0/2port link-mode bridgeport access vlan 4000undo stp enable
interface Vlan-interface4000mad bfd enablemad ip address 22.214.171.124 255.255.255.252 member 1mad ip address 126.96.36.199 255.255.255.252 member 2
irf-port global load-sharing mode destination-ip source-ip
Problem was with Fortigate firewall. We had to increase Fortigate LACP timer value.
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