Manual:TE Tunnels Example: Difference between revisions

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<h2>Introduction</h2>
==Introduction==
<p>
 
</p>
 
==Application example==


<h2>Application example</h2>
<p>
Consider following setup:
Consider following setup:
</p>
 
[[File:mpls-te-example.png|745px]]
[[File:mpls-te-example.png|745px]]
<p>
</p>


<h3>IP Connectivity and LDP</h3>
 
===IP Connectivity and LDP===
<p>
<p>
</p>
</p>
Line 32: Line 30:
set default router-id=10.255.1.1
set default router-id=10.255.1.1


/routing ospf networks
/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
Line 61: Line 59:
set default router-id=10.255.1.2
set default router-id=10.255.1.2


/routing ospf networks
/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
Line 90: Line 88:
set default router-id=10.255.1.3
set default router-id=10.255.1.3


/routing ospf networks
/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
Line 119: Line 117:
set default router-id=10.255.1.4
set default router-id=10.255.1.4


/routing ospf networks
/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
Line 148: Line 146:
set default router-id=10.255.1.5
set default router-id=10.255.1.5


/routing ospf networks
/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
add network=10.255.1.0/24 area=backbone
Line 214: Line 212:
</pre>
</pre>


<h3>VPLS tunnel</h3>
===VPLS tunnel===
<p>
<p>
ether4 goes to CE routers
ether4 goes to CE routers
Line 255: Line 253:
</pre>
</pre>


<h3>TE Support</h3>
===TE Support===
<p>
 
Traffic engineering needs RSVP protocol enabled on head end, tail end and forwarding routers. And additional setup to use CSPF.
Traffic engineering needs RSVP protocol enabled on head end, tail end and forwarding routers. And additional setup to use CSPF.
</p>
 
In our example all routers have the same configuration:
In our example all routers have the same configuration:
<pre>
<pre>
Line 271: Line 269:
</pre>
</pre>


<h3>TE Tunnels</h3>
===TE Tunnels===
<p>
 
</p>
 
====Secondary path====
 


<h4>Secondary path</h4>
====Reoptimization====
<p>
</p>


<h4>Reoptimization</h4>
<p>
</p>


[[Category:Manual]]
[[Category:Manual]]

Latest revision as of 08:07, 23 September 2010

Introduction

Application example

Consider following setup:

Mpls-te-example.png


IP Connectivity and LDP


R1

ether1 connects to R2, ether2 connects to R5

/system identity set name=R1

/interface bridge add name=lo0

/ip address
add address=192.168.55.1/30 interface=ether1
add address=192.168.55.18/30 interface=ether2
add address=10.255.1.1/32 interface=lo0


/routing ospf instance 
set default router-id=10.255.1.1

/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone

/mpls ldp 
set enabled=yes lsr-id=10.255.1.1 transport-address=10.255.1.1

/mpls ldp interface
add interface=ether1
add interface=ether2


R2

ether1 connects to R1, ether2 connects to R3

/system identity set name=R2

/interface bridge add name=lo0

/ip address
add address=192.168.55.2/30 interface=ether1
add address=192.168.55.5/30 interface=ether2
add address=10.255.1.2/32 interface=lo0


/routing ospf instance 
set default router-id=10.255.1.2

/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone

/mpls ldp 
set enabled=yes lsr-id=10.255.1.2 transport-address=10.255.1.2

/mpls ldp interface
add interface=ether1
add interface=ether2


R3

ether1 connects to R2, ether2 connects to R4

/system identity set name=R3

/interface bridge add name=lo0

/ip address
add address=192.168.55.6/30 interface=ether1
add address=192.168.55.9/30 interface=ether2
add address=10.255.1.3/32 interface=lo0


/routing ospf instance 
set default router-id=10.255.1.3

/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone

/mpls ldp 
set enabled=yes lsr-id=10.255.1.3 transport-address=10.255.1.3

/mpls ldp interface
add interface=ether1
add interface=ether2


R4

ether1 connects to R3, ether2 connects to R5

/system identity set name=R4

/interface bridge add name=lo0

/ip address
add address=192.168.55.10/30 interface=ether1
add address=192.168.55.13/30 interface=ether2
add address=10.255.1.4/32 interface=lo0


/routing ospf instance 
set default router-id=10.255.1.4

/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone

/mpls ldp 
set enabled=yes lsr-id=10.255.1.4 transport-address=10.255.1.4

/mpls ldp interface
add interface=ether1
add interface=ether2


R5

ether1 connects to R4, ether2 connects to R1

/system identity set name=R5

/interface bridge add name=lo0

/ip address
add address=192.168.55.14/30 interface=ether1
add address=192.168.55.17/30 interface=ether2
add address=10.255.1.5/32 interface=lo0


/routing ospf instance 
set default router-id=10.255.1.5

/routing ospf network
add network=192.168.55.0/24 area=backbone
add network=10.255.1.0/24 area=backbone

/mpls ldp 
set enabled=yes lsr-id=10.255.1.5 transport-address=10.255.1.5

/mpls ldp interface
add interface=ether1
add interface=ether2

After OSPF and LDP setup ensure that ospf is working properly

[admin@R1] /routing ospf neighbor> print 
 0 instance=default router-id=10.255.1.5 address=192.168.55.17 interface=ether2 
   priority=1 dr-address=192.168.55.17 backup-dr-address=192.168.55.18 
   state="Full" state-changes=5 ls-retransmits=0 ls-requests=0 db-summaries=0 
   adjacency=32m17s 

 1 instance=default router-id=10.255.1.2 address=192.168.55.2 interface=ether1 
   priority=1 dr-address=192.168.55.2 backup-dr-address=192.168.55.1 
   state="Full" state-changes=5 ls-retransmits=0 ls-requests=0 db-summaries=0 
   adjacency=32m17s 
[admin@R1] /routing ospf neighbor> 

[admin@R1] /ip route> print 
Flags: X - disabled, A - active, D - dynamic, 
C - connect, S - static, r - rip, b - bgp, o - ospf, m - mme, 
B - blackhole, U - unreachable, P - prohibit 
 #      DST-ADDRESS        PREF-SRC        GATEWAY            DISTANCE
 0 ADS  0.0.0.0/0                          10.1.101.1         0       
 1 ADC  10.1.101.0/24      10.1.101.9      ether3             0       
 2 ADC  10.255.1.1/32      10.255.1.1      lo0                0       
 3 ADo  10.255.1.2/32                      192.168.55.2       110     
 4 ADo  10.255.1.3/32                      192.168.55.2       110     
 5 ADo  10.255.1.4/32                      192.168.55.17      110     
 6 ADo  10.255.1.5/32                      192.168.55.17      110     
 7 ADC  192.168.55.0/30    192.168.55.1    ether1             0       
 8 ADo  192.168.55.4/30                    192.168.55.2       110     
 9 ADo  192.168.55.8/30                    192.168.55.2       110     
                                           192.168.55.17     
10 ADo  192.168.55.12/30                   192.168.55.17      110     
11 ADC  192.168.55.16/30   192.168.55.18   ether2             0       
[admin@R1] /ip route> 

Also make sure MPLS forwarding-table has label bindings

[admin@R1] /mpls forwarding-table> print 
Flags: L - ldp, V - vpls, T - traffic-eng 
 #   IN-LABEL      OUT-LABELS  DESTINATION                    I NEXTHOP        
 0   expl-null    
 1 L 16                        10.255.1.5/32                  e 192.168.55.17  
 2 L 17            19          192.168.55.8/30                e 192.168.55.2   
 3 L 18            19          10.255.1.4/32                  e 192.168.55.17  
 4 L 19            21          10.255.1.3/32                  e 192.168.55.2   
 5 L 20                        192.168.55.12/30               e 192.168.55.17  
 6 L 21                        192.168.55.4/30                e 192.168.55.2   
 7 L 22                        10.255.1.2/32                  e 192.168.55.2 

VPLS tunnel

ether4 goes to CE routers

R1

/interface bridge add name=vpn

/interface vpls 
add remote-peer=10.255.1.3 vpls-id=3:3

/interface bridge port
add interface=ether4 bridge=vpn
add interface=vpls1 bridge=vpn

R3

/interface bridge add name=vpn

/interface vpls 
add remote-peer=10.255.1.1 vpls-id=3:3

/interface bridge port
add interface=ether4 bridge=vpn
add interface=vpls1 bridge=vpn

Make sure that VPLS tunnel is established and running

[admin@R1] /interface vpls> monitor 0 once 
       remote-label: 23
        local-label: 23
      remote-status: 
          transport: 10.255.1.3/32
  transport-nexthop: 192.168.55.2
     imposed-labels: 21,23

[admin@R1] /interface vpls> 

TE Support

Traffic engineering needs RSVP protocol enabled on head end, tail end and forwarding routers. And additional setup to use CSPF.

In our example all routers have the same configuration:

# set up CSPF
/routing ospf instance
set default mpls-te-area=backbone mpls-te-router-id=lo0

# add interfaces on which to run RSVP
/mpls traffic-eng interface
add interface=ether1 bandwidth=10Mbps
add interface=ether2 bandwidth=10Mbps

TE Tunnels

Secondary path

Reoptimization