Dell Force10 Z9000 FTOS Configuration Guide for Z9000 System - Page 536

www.dell.com | support.dell.com Figure 24-10. Configuring Far-end Failure Detection FTOS(conf-if-gi-4/0)#show config ! interface GigabitEthernet 4/0 no ip address switchport fefd no shutdown FTOS(conf-if-gi-1/0)#show config ! interface GigabitEthernet 1/0 no ip address switchport R1 fefd no shutdown R2 Keep-alive Interval 2w0d4h : FEFD packet sent via interface Gi 1/0 Sender state -- Bi-directional Sender info -- Mgmt Mac(00:01:e8:14:89:25), Slot-Port(Gi 1/0) Peer info -- Mgmt Mac (00:01:e8:14:89:25), Slot-Port(Gi 4/0) Sender hold time -- 3 (second) R1 R2 Echo 2w0d4h : FEFD packet sent via interface Gi 4/0 Sender state -- Bi-directional Sender info -- Mgmt Mac(00:01:e8:14:89:25), Slot-Port(Gi 4/0) Peer info -- Mgmt Mac (00:01:e8:14:89:25), Slot-Port(Gi 1/0) Sender hold time -- 3 (second) Layer2 001 The report consists of several packets in SNAP format that are sent to the nearest known MAC address. In the event of a far-end failure, the device stops receiving frames, and after the specified time interval, assumes that the far-end is not available. The connecting line protocol is brought down so that upper layer protocols can detect the neighbor unavailability faster. FEFD state changes FEFD has two operational modes, Normal and Aggressive. When Normal mode is enabled on an interface an a far-end failure is detected, no intervention is required to reset the interface to bring it back to an FEFD operational state.When Aggressive mode is enabled on an interface in the same state, manual intervention is required to reset the interface. FEFD enabled systems (comprised of one or more interfaces) will automatically switch between four different states: Idle, Unknown, Bi-directional, and Err-disabled. 536 | Layer 2