no ip icmp rate-limit unreachable
no ip domain lookup
ip cef
ip cef load-sharing algorithm include-ports source destination
no ipv6 cef

mpls label range 40000 40999

int loopback0
ip address 10.255.255.4 255.255.255.255
isis tag 1


router isis CORE
mpls ldp autoconfig level-2
net 49.0000.0000.0000.0004.00
is-type level-2-only
advertise passive-only
ispf level-2
metric-style wide
log-adjacency-changes all
passive-interface loopback0
exit
mpls ldp router-id loopback0


interface Ethernet0/0
 ip address 10.2.4.4 255.255.255.0
 ip router isis CORE
 no shutdown
 duplex auto
 isis network point-to-point 
 isis metric 100
 isis three-way-handshake ietf

interface Ethernet0/1
 ip address 10.3.4.4 255.255.255.0
 ip router isis CORE
 no shutdown
 duplex auto
 isis network point-to-point 
 isis metric 100
 isis three-way-handshake ietf

interface Ethernet0/2
 ip address 10.1.4.4 255.255.255.0
 ip router isis CORE
 no shutdown
 duplex auto
 isis network point-to-point 
 isis metric 100
 isis three-way-handshake ietf

interface Ethernet0/3
 ip address 10.4.22.4 255.255.255.0
 ip router isis CORE
 no shutdown
 duplex auto
 isis network point-to-point 
 isis metric 100
 isis three-way-handshake ietf

interface Ethernet1/0
 ip address 10.4.26.4 255.255.255.0
 ip router isis CORE
 no shutdown
 duplex auto
 isis network point-to-point 
 isis metric 100
 isis three-way-handshake ietf