rfc9714v2.txt | rfc9714.txt | |||
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skipping to change at line 482 ¶ | skipping to change at line 482 ¶ | |||
As specified in Section 7.1 of [RFC9341], "for security reasons, the | As specified in Section 7.1 of [RFC9341], "for security reasons, the | |||
Alternate-Marking Method MUST only be applied to controlled domains." | Alternate-Marking Method MUST only be applied to controlled domains." | |||
This requirement applies when the MPLS performance measurement with | This requirement applies when the MPLS performance measurement with | |||
Alternate-Marking Method is taken into account, which means the MPLS | Alternate-Marking Method is taken into account, which means the MPLS | |||
encapsulation and related procedures defined in this document MUST | encapsulation and related procedures defined in this document MUST | |||
only be applied to controlled domains; otherwise, the potential | only be applied to controlled domains; otherwise, the potential | |||
attacks discussed in Section 10 of [RFC9341] may be applied to the | attacks discussed in Section 10 of [RFC9341] may be applied to the | |||
deployed MPLS networks. | deployed MPLS networks. | |||
As specified in Section 3, the value of a FL MUST be unique within | As specified in Section 3, the value of an FL MUST be unique within | |||
the administrative domain. In other words, the administrative domain | the administrative domain. In other words, the administrative domain | |||
is the scope of an FL. The method for achieving multi-domain | is the scope of an FL. The method for achieving multi-domain | |||
performance measurement with the same FL is outside the scope of this | performance measurement with the same FL is outside the scope of this | |||
document. The FL MUST NOT be signaled and distributed outside the | document. The FL MUST NOT be signaled and distributed outside the | |||
administrative domain. Improper configuration that allows the FL to | administrative domain. Improper configuration that allows the FL to | |||
be passed from one administrative domain to another would result in | be passed from one administrative domain to another would result in | |||
Flow-ID conflicts. | Flow-ID conflicts. | |||
To prevent packets carrying FLs from leaking from one domain to | To prevent packets carrying FLs from leaking from one domain to | |||
another, domain boundary nodes MUST deploy policies (e.g., ACL) to | another, domain boundary nodes MUST deploy policies (e.g., ACL) to | |||
filter out these packets. Specifically, at the sending edge, the | filter out these packets. Specifically, at the sending edge, the | |||
domain boundary node MUST filter out the packets that carry the Flow- | domain boundary node MUST filter out the packets that carry the FLI | |||
ID Label Indicator and are sent to other domains. At the receiving | and are sent to other domains. At the receiving edge, the domain | |||
edge, the domain boundary node MUST drop the packets that carry the | boundary node MUST drop the packets that carry the FLI and are from | |||
Flow-ID Label Indicator and are from other domains. Note that packet | other domains. Note that packet leakage is neither breaching privacy | |||
leakage is neither breaching privacy nor a source of DoS. | nor a source of DoS. | |||
9. IANA Considerations | 9. IANA Considerations | |||
IANA has assigned the following value in the "Extended Special- | IANA has assigned the following value in the "Extended Special- | |||
Purpose MPLS Label Values" registry within the "Special-Purpose | Purpose MPLS Label Values" registry within the "Special-Purpose | |||
Multiprotocol Label Switching (MPLS) Label Values" registry group: | Multiprotocol Label Switching (MPLS) Label Values" registry group: | |||
+=======+===============================+===========+ | +=======+===============================+===========+ | |||
| Value | Description | Reference | | | Value | Description | Reference | | |||
+=======+===============================+===========+ | +=======+===============================+===========+ | |||
End of changes. 2 change blocks. | ||||
6 lines changed or deleted | 6 lines changed or added | |||
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