Hi, If I try to enable authentication for EIGRP, --> FRR-1(config-if)# ip authentication key-chain eigrp 100 test, │ I get the following error: " Key chain with specified name not found" Running config: hostname FRR-1 service integrated-vtysh-config ! key chain test key 1 key-string testing ! interface eth2 ip address 192.168.2.1/24 ! interface eth4 ip address 192.168.200.2/24 ! router eigrp 100 network 100.100.100.0/24 network 192.168.2.0/24 rpm -qa | grep frr │ frr-pythontools-6.0-001.el7.centos.x86_64 │ frr-6.0-001.el7.centos.x86_64 CentOS Linux release 7.5.1804 (Core) The command seems to be there, even though not mentioned in the Docs, ( only for RIP). Should this work? Kind Regards Heikki Lavaste