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Internet-based WAN Backup Solutions using NetVanta The Internet as an Alternative
61200890L1-29.4A Copyright © 2005 ADTRAN, Inc. 5
ip address 10.254.255.26 255.255.255.252
access-policy FR
dial-backup number 2222 digital-64k 1 1 ppp 2
! link interface ppp 2/ISDN for dial backup in case this VC is lost
!
interface ppp 2
description Dial Backup Interface to ISP with Firewall, VPN to CENTRAL Gateway
ip address negotiated
access-policy DIAL
crypto map HOSTviaDIAL
ppp authentication chap
username ISP_Dial_Srv password a
ppp chap hostname ISP_Customer_Dial
ppp chap password a
no shutdown
!
ip access-list extended REMOTE_to_CENTRAL
remark permits local lan subnet to central subnet
permit ip 10.1.1.240 0.0.0.15 172.31.4.0 0.0.0.255
!
! each interface has its own policy class to allow for
! discrete destination policy control if needed
!
ip policy-class DIAL ! inbound on dial only allows sessions from CENTRAL
allow reverse list REMOTE_to_CENTRAL
!
ip policy-class FR ! inbound on FR allows any session from CENTRAL
allow reverse list REMOTE_to_CENTRAL
!
ip policy-class LOCALLAN ! outbound on LAN allows any session to CENTRAL
allow list REMOTE_to_CENTRAL
!
!
ip route 0.0.0.0 0.0.0.0 fr 1.1 ! static to primary.
ip route 0.0.0.0 0.0.0.0 ppp 2 3 ! floating static to the dial backup link should the
! fr iface go down.
!
end