MPLS Traffic Engineering ISIS - basic tunnels configuration

Hop Router 

GSR12008#configuration terminal
GSR12008(config)#mpls traffic-eng tunnels

interface XXX
mpls traffic-eng tunnels
ip rsvp bandwidth XX XX ( reserve more, otherwise some tunnel may not up as not enough bandwidth)

 router isis 
  metric-style wide

  mpls traffic-eng router-id Loopback0
  mpls traffic-eng level-1

Source Router

mpls traffic-eng tunnels

 router isis 
  metric-style wide

  mpls traffic-eng router-id Loopback0
  mpls traffic-eng level-1

int XXXX

 mpls traffic-eng tunnels 
  ip rsvp bandwidth XX XX

interface Tunnel158
  ip unnumbered Loopback0
  tunnel destination 10.10.10.4
  tunnel mode mpls traffic-eng
  tunnel mpls traffic-eng autoroute announce
  tunnel mpls traffic-eng priority 2 2
  tunnel mpls traffic-eng bandwidth 158
  tunnel mpls traffic-eng path-option 1 explicit name low
 !
 interface Tunnel159
  ip unnumbered Loopback0
  tunnel destination 10.10.10.4
  tunnel mode mpls traffic-eng
  tunnel mpls traffic-eng autoroute announce
  tunnel mpls traffic-eng priority 4 4
  tunnel mpls traffic-eng bandwidth 159
  tunnel mpls traffic-eng path-option 1 explicit name straight
 !

 ip explicit-path name low enable
  next-address 10.1.1.21 
  next-address 10.1.1.10 
  next-address 10.1.1.1 
  next-address 10.1.1.14 
 !
 ip explicit-path name straight enable
  next-address 10.1.1.21 
  next-address 10.1.1.5 
  next-address 10.1.1.14 

ip route xxxxx xxxxx tunnel 1 ( direct the traffic using Tunnel 1)

Verify

show Commands

This section provides information you can use to confirm your configuration is working properly.

The Output Interpreter Tool (registered customers only) (OIT) supports certain show commands. Use the OIT to view an analysis ofshow command output.

• show mpls traffic-eng tunnels brief
• show mpls traffic-eng tunnels name Pesaro_t158
• show ip rsvp interface
• show mpls traffic-eng topology path destination 10.10.10.6 bandwidth 75

Other useful commands (not illustrated here) include:

• show isis mpls traffic-eng advertisements
• show tag-switching forwarding-table
• show ip cef
• show mpls traffic-eng tunnels summary