diffserv-te with guaranteed bandwidth

[skrao_mandalapu]

Hi All,

I wanted to create PE to PE traffic engineered tunnels with guaranteed bandwidth using mpls experimental bits. On ingress PE i am mapping all traffic in to four classes Platinum (EXP 5) , Gold (EXP 4), Silver (EXP 3), Bronze (EXP 2). All core interfaces are 10Gbps and egress scheduling configured for platinum- 2.5Gbps, gold- 2.5Gbps, silver- 2.5Gbps, bronze- 2.5Gbps.

Ingress to egress dynamic tunnel has to establish with guranteed bandwidth for platinum traffic 2.5Gbps. For four types of traffic I required 4 LSPs from ingress to egress.

Can this requirement be done by diffser-te in cisco? If possible, please suggest helpful docs for configuration.

Regards

Siva Kondala Rao

[shivjain · Accepted solution]

Hi

The requirement is full filled by DS-TE. As per RFC 3564, describes following 3 application scenarios indicating the need for DS-TE:

1. Limiting proportion of Classes on a link

2. Maintain relative proportions of traffic on links

3. Guaranteed bandwidth services

TE Class Definition in Cisco IOS

mpls traffic-eng tunnels

mpls traffic-eng ds-te mode ietf

mpls traffic-eng ds-te te-classes

te-class 0 class-type 1 priority 0

te-class 1 class-type 1 priority 1

te-class 2 class-type 0 priority 2

te-class 7 class-type 0 priority 7

User-defined Constraints for DS-TE

interface Tunnel 30

ip unnumbered Loopback 0

tunnel mode mpls traffic-eng

tunnel mpls traffic-eng priority 7 7

tunnel mpls traffic-eng path-option 2 dynamic

tunnel mpls traffic-eng bandwidth 1000 class-type 1

tunnel destination 5.5.5.5

!

User-defined Constraints for DS-TE
interface Tunnel 30
ip unnumbered Loopback 0
tunnel mode mpls traffic-eng
tunnel mpls traffic-eng priority 7 7
tunnel mpls traffic-eng path-option 2 dynamic
tunnel mpls traffic-eng bandwidth 1000 class-type 1
tunnel destination 5.5.5.5
!

regards

shivlu jain

http://www.mplsvpn.info