I’m not sure we have a clear enough common understanding of “global” as yet to be able to say that we should make the provisioning of an ACL on an interface or “globally” mutually exclusive in the model. I think attaching an ACL to a specific interface in either the ingress or egress direction is well-understood, and with a shared understanding across vendors and operators such that either an interface augmentation or a “external” list , with no mention of global, makes sense.
Cheers, Einar On 13 Dec 2017, at 21:08, Mahesh Jethanandani <[email protected]<mailto:[email protected]>> wrote: You can use the same ACL definition to attach to different points in the system, provided they do not overlap. Otherwise, you are just wasting CAM entries. Global and interface attachment points will overlap with each other, because global means ‘any’ interface. On Dec 13, 2017, at 12:40 PM, Einar Nilsen-Nygaard (einarnn) <[email protected]<mailto:[email protected]>> wrote: We need to be able to attach any one ACL to a whole range of different places. Just speaking from the Cisco platform perspective, I may attach an ACL to: * Interfaces * NAT configuration * Class maps for QoS policy * Class maps for FW policy * …etc… Not sure if we have any global attachment points today, but if we did, I’d want to be able to use the same ACL definition anywhere I need it, not in just one on N places. Cheers, Einar On 13 Dec 2017, at 20:29, Mahesh Jethanandani <[email protected]<mailto:[email protected]>> wrote: My understanding is that you would attach an ACL either to an interface or globally. Not both. On Dec 13, 2017, at 12:25 PM, Einar Nilsen-Nygaard (einarnn) <[email protected]<mailto:[email protected]>> wrote: I’m happy to have a way to attach an ACL globally, but that’s orthogonal to attaching to an interface, isn’t it? Attaching ACLs directly to an interface doesn’t preclude global attachment in any way as far as I can see…or have I missed something? I’m not sure I understand why choices are an issue. The current proposal has this container: module: ietf-access-control-list +--rw access-lists +--rw attachment-points +--rw interface* [interface-id] {interface-attachment}? +--rw interface-id if:interface-ref +--rw ingress | +--rw acl-sets | +--rw acl-set* [name] | +--rw name -> ../../../../../../acl/name | +--rw type? -> ../../../../../../acl/type | +--ro ace* [name] {interface-stats or interface-acl-aggregate}? | +--ro name -> ../../../../../../../acl/aces/ace/name | +--ro matched-packets? yang:counter64 | +--ro matched-octets? yang:counter64 +--rw egress +--rw acl-sets +--rw acl-set* [name] +--rw name -> ../../../../../../acl/name +--rw type? -> ../../../../../../acl/type +--ro ace* [name] {interface-stats or interface-acl-aggregate}? +--ro name -> ../../../../../../../acl/aces/ace/name +--ro matched-packets? yang:counter64 +--ro matched-octets? yang:counter64 If we added some form of global attachment points, that might be a peer with the list of interface attachments, right? Because we’d need to support “global” and multiple “interface” attachments. It’s not an “or”, it’s an “and”. Or have I missed something? Cheers, Einar On 13 Dec 2017, at 20:10, Mahesh Jethanandani <[email protected]<mailto:[email protected]>> wrote: We want to support “global” attachment point down the line, and that “global” attachment point will be one of the choices (the other being the interface), what would this augment look like. Note, as far as I know, you cannot augment inside a choice node. On Dec 13, 2017, at 6:57 AM, Einar Nilsen-Nygaard (einarnn) <[email protected]<mailto:[email protected]>> wrote: Perhaps like this, as an augmentation to the interface: augment /if:interfaces/if:interface: +--rw ingress-acls | +--rw acl-sets | +--rw acl-set* [name] | +--rw name -> /access-lists/acl/name | +--rw type? -> /access-lists/acl/type | +--ro ace-statistics* [name] {interface-stats}? | +--ro name -> /access-lists/acl/aces/ace/name | +--ro matched-packets? yang:counter64 | +--ro matched-octets? yang:counter64 +--rw egress-acls +--rw acl-sets +--rw acl-set* [name] +--rw name -> /access-lists/acl/name +--rw type? -> /access-lists/acl/type +--ro ace-statistics* [name] {interface-stats}? +--ro name -> /access-lists/acl/aces/ace/name +--ro matched-packets? yang:counter64 +--ro matched-octets? yang:counter64 Could also put an “aces” container above both these & rename “ingress-acls" to “ingress”, etc. to give a single root for the augmentation if preferred. Cheers, Einar On 6 Dec 2017, at 19:43, Eliot Lear <[email protected]<mailto:[email protected]>> wrote: On 12/6/17 7:23 PM, Mahesh Jethanandani wrote: How does one move the interface attachment point, currently an 'interface-ref', to an augmentation of the if:interfaces/interface, inside of the ‘acl’ container? Down the line we might need to have an container for "attachment points" to accommodate the possibility of attaching an ACL either to an interface or “globally”. Keeping in mind that one use is that an ACL doesn't attach to an interface at all. _______________________________________________ netmod mailing list [email protected]<mailto:[email protected]> https://www.ietf.org/mailman/listinfo/netmod Mahesh Jethanandani [email protected]<mailto:[email protected]> Mahesh Jethanandani [email protected]<mailto:[email protected]> Mahesh Jethanandani [email protected]<mailto:[email protected]>
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