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RSVP-TE Alcatel-Lucent Configuration



Prerequisites and Configuring RSVP-TE



– Configure IGP.
– Enable MPLS context.
– Enable RSVP context.
– Configure interfaces for MPLS ( automatically RSVP).

Let’s check these step sone by one.

Configuring IGP (Routing Protocol) is required for routing between the nodes. This is the first required step. Before RSVP-TE configuration, be sure that your routing protocol is properly configured and the nodes can reach each other.

After IGP congfiguration, the second step is enabling MPLS and RSVP. To do this, use the below command:

A:Router>configure router mpls no shutdown

A:Router>configure router rsvp no shutdown

To check the status of these protocols, you can use “show router status” command.

The last step is locating the interfaces under the MPLS context. Configure the interfaces under MPLS context.

A:RouterA>configure>router>mpls#
	interface “system”
	exit
	interface “to_Router1”
	exit
	interface “to_Router2”
	exit

In Alcatel-Lucent Service Routers when you add an interface under MPLS, it is also added under the RSVP automatically. You can check this with “info” command under RSVP context.

A:RouterA>configure>router>rsvp# info
	interface “system”
	exit
	interface “to_Router1”
	exit
	interface “to_Router2”
	exit

Verification Commands

show router mpls lsp
show router mpls lsp to_R6 path detail
show router rsvp session orginate (on originate router, Head-End)
show router mpls lsp transit (on transit router)
show router mpls lsp transit detail
show router rsvp session detail
show router mpls lsp terminate (on terminate router, Tail-End)
show router mpls lsp terminate detail
show router rsvp session terminate detail

OAM tools can be used for RSVP also. The ping and trace commands like below:

oam lsp-ping “to_RouterB”

oam lsp-trace “to_RouterB”

RSVP-TE Configuration Example



In this example, we will use the below topology, for defining strict paths and assigning them to an LSP.

RSVP Configuration Example Topology, Strict Hops

RSVP Configuration Strict Hops Example Topology


Here we are assuming that the interface configurations are done. We will only show the MPLS RSVP-TE related configuration parts on Ingress Router. On the other routers, also MPLS and RSVP must be enabled and the related interfaces must be located under MPLS context.

As a recall, RSVP must be bidirectional and for this we need two sessions. Here, we are configuring only one session, to configure a second session from the Tail-End to the Head-End, there must be an LSP definition on Router4.

Router1 Configuration

A:RouterA>configure router mpls enable

A:RouterA>configure router rsvp enable

A:RouterA>configure>router>mpls#
	interface “system”
	exit
	interface “to_Router1”
	exit
	interface “to_Router2”
	exit

A:RouterA>configure>router>rsvp# info
	interface “system”
	exit
	interface “to_Router1”
	exit
	interface “to_Router2”
	exit

A:RouterA>configure>router>mpls#
	path "path_A"
		hop 10.1.0.1 strict
		hop 10.3.0.1 strict
		hop 10.5.0.1 strict
		no shutdown
	exit
	lsp "to_RouterB"
		to 2.2.2.2
		primart "path_A"
		exit
		no shutdown
		exit

	
A:RouterA>configure>router>mpls#
	path "Path_B"
		hop 10.2.0.1 strict
		hop 10.4.0.1 strict
		hop 10.6.0.1 strict
		no shutdown
	exit
	lsp "to_RouterB"
		to 2.2.2.2
		primart "Path_B"
		exit
		no shutdown
		exit

I hope this articles will be helpful for you. We will continue to talk about MPLS and RSVP-TE more in the following articles. As you know, MPLS is Traffic Engineering. For more articles abput Traffic Engineering keep on ipcisco.com ;)

MPLS, RSVP-TE – Part 1
MPLS, RSVP-TE – Part 2(Alcatel-Lucent Configuration)


…YOU CAN REACH ALL THE “MPLS” ARTICLES AND CONFIGURATIONS BELOW…

MPLS Basics
What is MPLS?
Enabling MPLS on Cisco Router

MPLS Label Distribution Protocol, LDP
MPLS Label Distribution Protocol, LDP – Part 1
MPLS Label Distribution Protocol, LDP – Part 2
MPLS Label Distribution Protocol, LDP – Part 3 (Configuration on ALU)
MPLS Label Distribution Protocol, LDP – Part 4 (ECMP)
MPLS Label Distribution Protocol, LDP – Part 5 (Export and Import Policy, Prefix Aggregation)
MPLS Label Distribution Protocol, LDP – Part 6 (T-LDP)
MPLS Label Distribution Protocol, LDP – Part 7 (CR-LDP)

MPLS, RSVP-TE
MPLS, RSVP-TE – Part 1
MPLS, RSVP-TE – Part 2(Alcatel-Lucent Configuration)

MPLS Protection And Restoration
MPLS Protection and Restoration – Part 1
MPLS Protection and Restoration – Part 2 (End-to-End Protection, Secondary Paths)
MPLS Protection and Restoration – Part 3 (Path Diversity in Secondary Paths)
MPLS Protection and Restoration – Part 4 (Local Protection, Fast Reroute)
MPLS Protection and Restoration – Part 5 (Fast Reroute Protection Types)
MPLS Protection and Restoration – Part 6 (RSVP Objects Used for MPLS Fast Reroute)
MPLS Protection and Restoration – Part 7 (Verification Commands on Alcatel-Lucent Routers)
MPLS Protection and Restoration – Part 8 (Actions After the Failure)
MPLS Protection and Restoration – Part 9 (Convergence Factors)
MPLS Protection and Restoration – Part 10 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 11 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 12 (Juniper Configuration Samples)
MPLS Protection and Restoration – Part 13 (Juniper Configuration Samples)


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About the Author
Gokhan Kosem is a telecommunation and network engineer. His ambition to IP networks and end-to-end system installation made him to prepare this web-site. By sharing his experiences about various networking protocols beside different system installation experiences and Cisco, Juniper, Alcatel-Lucent devices configurations, he is aimed to be helpful for his collegues in all over the world. He is currently lives in Istanbul, Turkey.

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