UDLR Tunnel – with ISIS

Router A

interface tunnel 0

ip address 10.4.1.1 255.255.255.0

ip router isis 2

!

interface ethernet 0

ip address 10.1.1.1 255.255.255.0

ip router isis 2

!

interface ethernet 1

ip address 10.2.1.1 255.255.255.0

ip router isis 1

!

interface ethernet 2

ip address 10.3.1.1 255.255.255.0

ip router isis 2

!

router isis 1

network 47.0001.0000.0000.000a.00

is-type level-1

router isis 2

passive-interface tunnel 0

network 47.0002.0000.0000.000a.00

!

ip classless

10.1.1.0

10.2.1.0

10.5.1.0

10.3.1.0

10.6.1.0

A

C

B

Ethernet 1

Router B

interface tunnel 0

ip address 10.4.1.1 255.255.255.0

!

interface ethernet 0

ip address 10.2.1.2 255.255.255.0

ip router isis 1

!

interface ethernet 1

ip address 10.5.1.1 255.255.255.0

ip router isis 1

!

interface ethernet 2

ip address 10.6.1.1 255.255.255.0

!

router isis 1

network 47.0001.0000.0000.000b.00

is-type level-1

!

ip default-route 0.0.0.0 0.0.0.0 10.6.1.2

!

ip classless

Router C

interface ethernet 0

ip address 10.3.1.2 255.255.255.0

ip router isis 2

!

interface ethernet 1

ip address 10.6.1.2 255.255.255.0

ip router isis 1

!

router isis 1

network 47.0001.0000.0000.000c.00

is-type level-1

router isis 2

network 47.0002.0000.0000.000c.00

!

ip classless

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