EAP authentication

From: Bit Gossip (bit.gossip@chello.nl)
Date: Thu Jul 12 2007 - 17:43:02 ART


        Group,
the doccd says 'EAP works much as CHAP does, except that identity
request and response packets are exchanged when EAP starts.'
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124cr/hsec_r/sec_p1h.htm#wp1138118

But if I take a plain working setup with 'ppp authentication chap' and I
change the authentication to EAP it doesn't work unless I add to both
routers: 'ppp eap password CISCO'
Who knows why I have to add that and how the authentication process
actually works?
Thanks,
bit.

working config with ppp authentication chap:

R1:
username R6 password 0 CISCO
!
interface Serial0/1
 ip address 192.168.0.1 255.255.255.0
 encapsulation ppp
 ppp authentication chap
end

R6
username R1 password 0 CISCO
!
interface Serial0/1
 ip address 192.168.0.6 255.255.255.0
 encapsulation ppp
 clock rate 128000
 ppp authentication chap
end

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

working config with ppp authentication chap

R1:
username R6 password 0 CISCO
!
interface Serial0/1
 ip address 192.168.0.1 255.255.255.0
 encapsulation ppp
 ppp authentication eap
 ppp eap password 0 CISCO
 ppp eap local
end

R6
username R1 password 0 CISCO
!
interface Serial0/1
 ip address 192.168.0.6 255.255.255.0
 encapsulation ppp
 clock rate 128000
 ppp authentication eap
 ppp eap password 0 CISCO
 ppp eap local
end



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