draft-ietf-mpls-label-encaps-06.txt   draft-ietf-mpls-label-encaps-07.txt 
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Tony Li Tony Li
Juniper Networks, Inc. Juniper Networks, Inc.
Alex Conta Alex Conta
Lucent Technologies Lucent Technologies
September 1999 September 1999
MPLS Label Stack Encoding MPLS Label Stack Encoding
draft-ietf-mpls-label-encaps-06.txt draft-ietf-mpls-label-encaps-07.txt
Status of this Memo Status of this Memo
This document is an Internet-Draft and is in full conformance with This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026. all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet- other groups may also distribute working documents as Internet-
Drafts. Drafts.
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header, then: header, then:
a. Create an ICMP Packet Too Big Message, and set its Next- a. Create an ICMP Packet Too Big Message, and set its Next-
Hop MTU field to the difference between the Effective Hop MTU field to the difference between the Effective
Maximum Frame Payload Size and the value of N Maximum Frame Payload Size and the value of N
b. If possible, transmit the ICMP Packet Too Big Message to b. If possible, transmit the ICMP Packet Too Big Message to
the source of the datagram. the source of the datagram.
c. discard the labeled IPv6 datagram. c. discard the labeled IPv6 datagram.
4. If the IP datagram is not larger than 1280 octets, then 4. If the IP datagram is not larger than 1280 octets, and it
contains a fragment header, then
a. Convert it into fragments, each of which MUST be at least a. Convert it into fragments, each of which MUST be at least
N bytes less than the Effective Maximum Frame Payload N bytes less than the Effective Maximum Frame Payload
Size. Size.
b. Prepend each fragment with the same label header that b. Prepend each fragment with the same label header that
would have been on the original datagram had would have been on the original datagram had
fragmentation not been necessary. fragmentation not been necessary.
c. Forward the fragments. c. Forward the fragments.
 End of changes. 

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