Home » Tag Archives: MPLS Labels range

Tag Archives: MPLS Labels range

MPLS Special Labels

MPLS label range from 0 to 1,048,575 (configurable on Cisco IOS) Labels 0 through 15 are reserved labels. An LSR cannot use them in the normal case for forwarding packets, the labels from 16 through 1,048,575 are used for normal packet forwarding. In Cisco IOS, the default range is 16 through 100,000. This number is more than enough for labeling all the IGP prefixes in large routing table, but in very large scale networks this number might be insufficient, so we can change the label range with the mpls label range min max command LSR1(config)#mpls label range ? <16-1048575>  Minimum …

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