Which of the following pairs of statements is true in terms of configuring MD authentication?
A. Interface statements (OSPF, EIGRP) must be configured; use of key chain in OSPF
B. Router process (OSPF, EIGRP) must be configured; key chain in EIGRP
C. Router process (only for OSPF) must be configured; key chain in EIGRP
D. Router process (only for OSPF) must be configured; key chain in OSPF
CAn anyone explain, what is this question about ?
Does it make sense to anybody ?
I don’t know what it is meant by “router process”, but I know EIGRP uses key chain for its method of implementing MD5. So it has to be B or C.
Router process is from inside lets say router ospf 100 then you can configure the authentication there
OSPF Authentication
!
interface GigabitEthernet0/1
ip address 192.168.10.1 255.255.255.0
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 CCNA
!
router ospf 65000
router-id 192.168.10.1
area 0 authentication message-digest
network 10.1.1.0 0.0.0.255 area 10
network 192.168.10.0 0.0.0.255 area 0
!
==================================================================
EIGRP Authentication
!
key chain CCNA
key 1
key-string CCNA-SECURITY
!
!
interface Loopback0
ip address 192.168.100.1 255.255.255.0
!
interface GigabitEthernet0/1
ip address 192.168.10.1 255.255.255.0
ip authentication mode eigrp 65000 md5
ip authentication key-chain eigrp 65000 CCNA
!
router eigrp 65000
network 192.168.10.0
network 192.168.100.0
But the answer should be like this
Router process or interface statement for OSPF must be configured; key chain in EIGRP