L2VPN using a dedicated MPLS Core Link using MPLS TE Tunnel explicit path

[s.lachica]

I have a new 10G L2vpn to provision in our MPLS. But since we only have 10G links currently, i am thinking of dedicating a new 10G link inside the MPLS Core. In order to do this, the only way i thought of was MPLS TE Tunnel and using static route to direct the traffic to the tunnel with explicit path to the dedicated link. Will this work without issue? Is this something that is being done by other Service Providers? I tested it in lab and got limited by RSVP to 75% of interface bw. Any inputs will be appreciated.

Thanks!

[Harold Ritter · Accepted solution]

Yes, you can certainly do that. Make sure you set a high metric on that interface so no other traffic uses it. The 75% max allocation you saw in your lab is a default behaviour and can be changed as follow:

iosv1(config)#do sh ip rsvp int
interface    rsvp  allocated  i/f max  flow max sub max  VRF            
Gi0/1        ena   0          750M     750M     0       
iosv1(config)#int gi0/1
iosv1(config-if)#ip rsvp bandwidth 1000000   
iosv1(config-if)#do sh ip rsvp int        
interface    rsvp  allocated  i/f max  flow max sub max  VRF            
Gi0/1        ena   0          1G       1G       0       
iosv1(config-if)#

Regards,