From: Sage Vadi (sagevadi@yahoo.co.uk)
Date: Mon Dec 23 2002 - 02:37:37 GMT-3
To be pendantic,
OSPF as defined by the RFC has 3 types of
authentication, NOT 2.
NB: becareful when configuring type 0/null as in
different versions of Cisco's IOS there is no support
for null, so you will get authentication mismatch in
this case.
0 = Null Authentication (explained why we classify
null at all)
1 = Plain Text
3 = Encrypted (MD5)
0 = performs an OSPF packet checksum, this is not
enabled by default
Type3(encrypted)
interface Serial1
ip address 172.50.18.1 255.255.0.0
encapsulation ppp
ip ospf message-digest-key 5 md5 blissful
ip ospf hello-interval 45
ip ospf transmit-delay 10
~cut~
router ospf 2
log-adjacency-changes
area 0 authentication message-digest
network 172.50.0.0 0.0.255.255 area 0
!
Type2(plain text)
interface Serial1
ip address 172.50.18.1 255.255.0.0
encapsulation ppp
ip ospf authentication-key blissful
ip ospf hello-interval 45
ip ospf transmit-delay 10
~cut~
router ospf 2
log-adjacency-changes
auto-cost reference-bandwidth 1
area 0 authentication
network 172.50.0.0 0.0.255.255 area 0
rgds,
Sage
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