# MPLS Traffic Engineering (TE) OSPF Configuration

**URL:** https://forum.networklessons.com/t/mpls-traffic-engineering-te-ospf-configuration/39245
**Category:** Lessons Discussion
**Created:** [September 4, 2023, 8:17am UTC](https://forum.networklessons.com/t/mpls-traffic-engineering-te-ospf-configuration/39245 "2023-09-04T08:17:54Z")
**Posts on this page:** 1
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### Author: ![lagapidis](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/lagapidis/32/4949_2.png) [@lagapidis](https://forum.networklessons.com/u/lagapidis)
#### Post date: [June 14, 2024, 6:27am UTC](https://forum.networklessons.com/t/mpls-traffic-engineering-te-ospf-configuration/39245/5 "2024-06-14T06:27:36Z")

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Hello Zaygham

You are correct that RSVP can indeed generate labels. However, in an MPLS-TE configuration using OSPF, both LDP and RSVP can be used, but when they’re used together, **they serve different purposes**. Here’s a detailed explanation of why both are often used together:

Here are some reasons to use both Both LDP and RSVP together:

1. **Dual Use Cases:**

2. **Separation of Concerns:**

3. **Compatibility and Redundancy:**

4. **Granular Control:**

Using both LDP and RSVP in MPLS-TE configurations provides flexibility, redundancy, and optimized use of network resources. LDP handles standard label distribution for best-effort traffic, while RSVP handles the more complex requirements of traffic-engineered paths. This dual approach ensures that the network can support a wide range of service requirements and maintain high performance and reliability.

I hope this has been helpful!

Laz

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