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]]
===IP Connectivity and LDP===
<p>
<p>
</p>
</p>


<h3>IP Connectivity and LDP</h3>
 
<b>R1</b>
<p>ether1 connects to R2, ether2 connects to R5</p>
<pre>
/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
</pre>
 
 
<b>R2</b>
<p>ether1 connects to R1, ether2 connects to R3</p>
<pre>
/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
</pre>
 
 
<b>R3</b>
<p>ether1 connects to R2, ether2 connects to R4</p>
<pre>
/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
</pre>
 
 
<b>R4</b>
<p>ether1 connects to R3, ether2 connects to R5</p>
<pre>
/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
</pre>
 
 
<b>R5</b>
<p>ether1 connects to R4, ether2 connects to R1</p>
<pre>
/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
</pre>
 
After OSPF and LDP setup ensure that ospf is working properly
<pre>
[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>
 
</pre>
 
<pre>
[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>
 
</pre>
 
Also make sure MPLS forwarding-table has label bindings
<pre>
[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
</pre>
 
===VPLS tunnel===
<p>
<p>
ether4 goes to CE routers
</p>
</p>
<b>R1</b>
<pre>
/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
</pre>
<b>R3</b>
<pre>
/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
</pre>
Make sure that VPLS tunnel is established and running
<pre>
[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>
</pre>
===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:
<pre>
# 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
</pre>
===TE Tunnels===


<h3>VPLS tunnel</h3>
<p>
</p>


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


<h3>TE Tunnels</h3>
<p>
</p>


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


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


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

Latest revision as of 10:07, 23 September 2010

Introduction

Application example

Consider following setup:


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

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