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Difference between "Total Allocated BW" and "BW LOCKED" in MPLS TE CLIs

peeyushpd29
Level 1
Level 1

Hi,

 

I am currently learning MPLS TE and was trying some hands on with the related CLIs on Cisco 7200, release Version 12.4(15)T13b.

 

While going through some Cisco documentation, I came across below two CLIs.

1. show mpls traffic-eng link-management bandwidth-allocation <interface>

2. show mpls traffic-eng topology

 

When I compared the bandwidths for a particular interface, I found that the "BW LOCKED" in the first CLI is showing different value than the "Total Allocated BW" in the second CLI.

 

The "BW LOCKED" showed the value as I had expected based on the TE tunnels reservation requests.

The "Total Allocated BW" however is less than "BW LOCKED". It is sometimes 0 even when the TE tunnels going through that particular link are admin and oper UP.

 

Are bandwidth reserved and bandwidth allocated (on a particular interface for some priority) two different terminologies ?

 

I need your help in understanding the meaning of these two fields and when they can show different values so that I can know the missing piece in my understanding.

 

I was following below documentation.

https://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/TE_1208S.html#wp27945

https://www.cisco.com/c/en/us/td/docs/ios/12_2sr/12_2srb/feature/guide/dsteietf.html#wp1054018

 

Thanks,

Peeyush

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