MPLS Traffic Engineering Using ISIS - Explicit Path

R3#sh run | s mpls|FastEthernet0/0.34|FastEthernet0/0.36|Loopback33|router isis|Tunnel
mpls traffic-eng tunnels
mpls label protocol ldp
 ip router isis
interface Loopback33
 ip address 33.33.33.33 255.255.255.255
interface Tunnel319
 ip unnumbered Loopback0
 tunnel mode mpls traffic-eng
 tunnel destination 19.19.19.19
 tunnel mpls traffic-eng priority 7 7
 tunnel mpls traffic-eng bandwidth 2000
 tunnel mpls traffic-eng path-option 1 explicit name TE
interface FastEthernet0/0.34
 encapsulation dot1Q 34
 ip address 20.3.4.3 255.255.255.0
 ip router isis
 ipv6 address 2001:20:3:4::3/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.36
 encapsulation dot1Q 36
 ip address 20.3.6.3 255.255.255.0
 ip router isis
 ipv6 address 2001:20:3:6::3/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
router isis
 net 11.0703.0000.0000.0000.3333.00
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
 mpls ldp autoconfig level-2
 mpls traffic-eng router-id Loopback0
 mpls traffic-eng level-2
ip route 199.199.199.199 255.255.255.255 Tunnel319
mpls ldp router-id Loopback0 force



ip route 199.199.199.199 255.255.255.255 Tunnel319
==================================================================================================


R4#sh run | s mpls|FastEthernet0/0.34|FastEthernet0/0.45|FastEthernet0/0.46|router isis
mpls traffic-eng tunnels
mpls label protocol ldp
interface FastEthernet0/0.34
 encapsulation dot1Q 34
 ip address 20.3.4.4 255.255.255.0
 ip router isis
 ipv6 address 2001:20:3:4::4/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.45
 encapsulation dot1Q 45
 ip address 20.4.5.4 255.255.255.0
 ip router isis
 ipv6 address 2001:20:4:5::4/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.46
 encapsulation dot1Q 46
 ip address 20.4.6.4 255.255.255.0
 ip router isis
 ipv6 address 2001:20:4:6::4/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
 mpls ldp autoconfig level-2
 mpls traffic-eng router-id Loopback0
 mpls traffic-eng level-2
mpls ldp router-id Loopback0 force
router isis
 net 11.0744.0000.0000.0000.4444.00
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
 mpls ldp autoconfig level-2
 mpls traffic-eng router-id Loopback0
 mpls traffic-eng level-2



==================================================================================================


R5#sh run | s mpls|FastEthernet0/0.45|FastEthernet0/0.56|FastEthernet0/0.519|router isis
mpls traffic-eng tunnels
mpls label protocol ldp
 ip router isis
interface FastEthernet0/0.45
 encapsulation dot1Q 45
 ip address 20.4.5.5 255.255.255.0
 ip router isis
 ipv6 address 2001:20:4:5::5/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.56
 encapsulation dot1Q 56
 ip address 20.5.6.5 255.255.255.0
 ip router isis
 ipv6 address 2001:20:5:6::5/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.519
 encapsulation dot1Q 519
 ip address 20.5.19.5 255.255.255.0
 ip router isis
router isis
 net 11.0755.0000.0000.5555.00
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
 mpls ldp autoconfig level-2
 mpls traffic-eng router-id Loopback0
 mpls traffic-eng level-2

==================================================================================================

R6#sh run | s mpls|FastEthernet0/0.36|FastEthernet0/0.46|FastEthernet0/0.56|FastEthernet0/0.619|router isis
mpls traffic-eng tunnels
mpls label protocol ldp
 ip router isis
 ipv6 router isis
interface FastEthernet0/0.36
 encapsulation dot1Q 36
 ip address 20.3.6.6 255.255.255.0
 ip router isis
 ipv6 address 2001:20:3:6::6/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.46
 encapsulation dot1Q 46
 ip address 20.4.6.6 255.255.255.0
 ip router isis
 ipv6 address 2001:20:4:6::6/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.56
 encapsulation dot1Q 56
 ip address 20.5.6.6 255.255.255.0
 ip router isis
 ipv6 address 2001:20:5:6::6/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
interface FastEthernet0/0.619
 encapsulation dot1Q 619
 ip address 20.6.19.6 255.255.255.0
 ip router isis
 ipv6 address 2001:20:6:19::6/64
 mpls traffic-eng tunnels
 isis circuit-type level-2-only
 ip rsvp bandwidth 2000
router isis
 net 11.0766.0000.0000.0066.6600
 metric-style wide
 !
 address-family ipv6
  multi-topology
 exit-address-family
 mpls ldp autoconfig level-2
 mpls traffic-eng router-id Loopback0
 mpls traffic-eng level-2
mpls ldp router-id Loopback0 force



==================================================================================================

XR1
===

explicit-path name TE
 index 1 next-address strict ipv4 unicast 20.5.19.5
 index 2 next-address strict ipv4 unicast 20.4.5.4
 index 3 next-address strict ipv4 unicast 20.3.4.3

!
interface tunnel-te193
 ipv4 unnumbered Loopback0
 signalled-bandwidth 2000
 destination 3.3.3.3
 path-option 1 explicit name TE
!

!
router static
 address-family ipv4 unicast
  33.33.33.33/32 tunnel-te193
 !

!
router isis abcd
 net 11.0719.0000.0000.1919.00
 address-family ipv4 unicast
  metric-style wide
  mpls traffic-eng level-2-only
  mpls traffic-eng router-id Loopback0
 !
 address-family ipv6 unicast
  metric-style wide
 !
 interface Loopback0
  circuit-type level-2-only
  address-family ipv4 unicast
  !
 !
 interface GigabitEthernet0/1/0/0.519
  circuit-type level-2-only
  address-family ipv4 unicast
  !
 !
 interface GigabitEthernet0/1/0/0.619
  circuit-type level-2-only
  address-family ipv4 unicast
  !


!
rsvp
 interface GigabitEthernet0/1/0/0.519
  bandwidth 2000
 !
 interface GigabitEthernet0/1/0/0.619
  bandwidth 2000
 !

!
mpls traffic-eng
 interface GigabitEthernet0/1/0/0.519
 !
 interface GigabitEthernet0/1/0/0.619
 !



!
mpls ldp
 router-id 19.19.19.19
 interface GigabitEthernet0/1/0/0.519
 !
 interface GigabitEthernet0/1/0/0.619
 !
==================================================================================================

R3#traceroute 199.199.199.199 source lo33

Type escape sequence to abort.
Tracing the route to 199.199.199.199

  1 20.3.6.6 [MPLS: Label 16 Exp 0] 4 msec 0 msec 4 msec
  2 20.5.6.5 [MPLS: Label 16 Exp 0] 0 msec 4 msec 0 msec
  3 20.5.19.19 4 msec *  4 msec



RP/0/0/CPU0:XR1#traceroute 33.33.33.33 so 199.199.199.199
Wed May  1 02:09:04.449 UTC

Type escape sequence to abort.
Tracing the route to 33.33.33.33

 1  20.5.19.5 [MPLS: Label 27 Exp 0] 4 msec  4 msec  3 msec
 2  20.4.5.4 [MPLS: Label 26 Exp 0] 4 msec  3 msec  3 msec
 3  20.3.4.3 2 msec  *  3 msec

HTH...
Deepak Arora
Evil CCIE