Re: [netmod] 6991bis: address-with-prefix-length

I don't think this is joining an address with a prefix - this is joining an address with a prefix *length*. If it was two separate values, it would still be constraining the address to be covered by the prefix, since there would be no way to define a prefix that the address didn't cover. Also

Re: [netmod] Question on draft-wu-netmod-factory-default

As I understand it,the only purpose for the candidate and startup datastores is to indirectly set the contents of the running datastore. Therefore it wouldn't make sense to have different factory defaults for the running, startup and candidate datastores. And those are the only writable ones.

Re: [netmod] Adoption poll for draft-wu-netmod-factory-default-02

Support. From: netmod on behalf of Kent Watsen Sent: Tuesday, 26 March 2019 9:34 a.m. To: netmod@ietf.org Subject: [netmod] Adoption poll for draft-wu-netmod-factory-default-02 This email begins a 2-week adoption poll for:

Re: [netmod] Genart last call review of draft-ietf-netmod-module-tags-06

In that case, why not make it so the tags are actually valid URIs, similar to XML namespaces? From: netmod on behalf of William Lupton Sent: Friday, 8 March 2019 7:37 a.m. To: Andy Bierman Cc: Datatracker on behalf of Elwyn Davies; IETF discussion list;

Re: [netmod] Regarding origin annotation encoding in ietf-netconf-nmda-restconf-05

Hi, By my understanding both annotations should be included in one JSON object, like this. { "example:interface" : [ { "name" : "eth1", "mtu" : 1500, "@mtu" : { "ietf-netconf-with-defaults:default" : true,

Re: [netmod] for a future rfc6991bis

Does a percentage really need a single standard type in the first place? How about "units percent;"? From: netmod on behalf of Acee Lindem (acee) Sent: Wednesday, 14 November 2018 5:03 a.m. To: Juergen Schoenwaelder; Balázs Lengyel Cc: NETMOD WG

Re: [netmod] Confirming draft-ietf-netmod-module-tags-03 consensus call

Hi, I was not at the IETF meeting unfortunately. I see that the technical issues raised in the WGLC have been fixed, which is good. However I still have reservations about the utility of the proposed standard. It seems to me like a solution in search of a problem, and I can't understand why

Re: [netmod] EXTERNAL: Re: WG LC draft-ietf-netmod-module-tags-02 - 10/2/18 - 10/16/18

. From: Christian Hopps Sent: Thursday, 18 October 2018 11:16 p.m. To: Alex Campbell Cc: Christian Hopps; joel jaeggli; NETMOD Working Group Subject: EXTERNAL: Re: [netmod] WG LC draft-ietf-netmod-module-tags-02 - 10/2/18 - 10/16/18 A router has no use for it's capability/feature

Re: [netmod] WHEN statement within mandatory objects doesn't ensure presence of the mandatory object

../type = 'ipv4'" Is that intentional? It seems more like an omission to me. From: Andy Bierman Sent: Thursday, 18 October 2018 10:54 a.m. To: Alex Campbell Cc: Michael Rehder; netmod@ietf.org Subject: Re: [netmod] WHEN statement within mandatory objects does

Re: [netmod] WG LC draft-ietf-netmod-module-tags-02 - 10/2/18 - 10/16/18

e for my PC *on my PC* instead of adding needless external dependencies. Alex From: Christian Hopps Sent: Wednesday, 17 October 2018 9:56 p.m. To: Alex Campbell Cc: Christian Hopps; joel jaeggli; NETMOD Working Group Subject: Re: [netmod] WG LC draf

Re: [netmod] WHEN statement within mandatory objects doesn't ensure presence of the mandatory object

> At the abstract level I do not understand how when-stmt would work > differently. > IMO deviation-stmt already allows enough flexibility to rewrite the model to > fit the implementation. FWIW: deviation statements cannot be used to modify when statements - "when" is missing from the list of

Re: [netmod] WG LC draft-ietf-netmod-module-tags-02 - 10/2/18 - 10/16/18

ards, Alex From: Christian Hopps Sent: Wednesday, 17 October 2018 1:04 a.m. To: Alex Campbell Cc: Christian Hopps; joel jaeggli; NETMOD Working Group Subject: Re: [netmod] WG LC draft-ietf-netmod-module-tags-02 - 10/2/18 - 10/16/18 > > On Oct 3, 2018, at 8:22 PM, Alex

Re: [netmod] WG LC draft-ietf-netmod-module-tags-02 - 10/2/18 - 10/16/18

Do not support. This document does not make a good case for why tags should exist. The introduction does not explain what they are useful for, it just makes a comparison to #hashtags (which is something I would expect to see in an April 1st RFC). The initial registry values, section 8.2, also

Re: [netmod] EXTERNAL: Module update rules: changing a type to a union

Hi, It seems to be that the rule you quoted specifically states that expanding the value space is not okay: o A "type" statement may be replaced with another "type" statement that does not change the syntax or semantics of the type. For example, an inline type definition may

Re: [netmod] three questions about YANG deviation statement

Hi, [Note I haven't tested these answers. Also this is a source level view, with no regards for compatibility] [1] If you want to make a node optional (not mandatory), the way to do that is: deviation "/a:a" { deviate replace { mandatory false; } } [2] Deviation

Re: [netmod] EXTERNAL: Re: New Version Notification for draft-zheng-netmod-tacacs-yang-01.txt

Hi Bo, My comments: (ignoring simple typos and placeholder values as this is a first draft) * What is a TACACS+ template? To my knowledge this is not a standard concept. The word "template" does not appear in draft-ietf-opsawg-tacacs-10. * What is a domain name, in the context of usernames?

Re: [netmod] Clarification about subtree filtering

Hi, Since nobody else has answered I'll have a go. I'm not familiar with subtree filtering, but I am with XPath. Assuming your XPath translation is accurate, it will return no data (response A). From: netmod on behalf of Shiva Kumar

Re: [netmod] An abundant amount of IANA if types...

I haven't seen any previous discussions on the topic, but we have a similar problem. Note this is not really to do with YANG itself, so much as the practical limitations of the software package that provides our CLI interface. In NETCONF, the existence of extra unused identities doesn't pose

Re: [netmod] YANG 'must' Xpaths, predicates and wildcards

__ From: Sterne, Jason (Nokia - CA/Ottawa) <jason.ste...@nokia.com> Sent: Thursday, 29 March 2018 5:11 a.m. To: Alex Campbell; netmod@ietf.org Subject: RE: YANG 'must' Xpaths, predicates and wildcards Thanks Alex. Sorry about those sloppy mistakes. I agree about the ../a-list and

Re: [netmod] YANG 'must' Xpaths, predicates and wildcards

Hi, For one thing, it should be ../a-list since a-list is not a child of foo. Also - if foo is not configured and has no default value, then any must expressions in foo are not evaluated because it is not part of the "accessible tree". (I tested this in ConfD) Apart from these issues, yes it

[netmod] sub-intf-vlan-model for VLAN forwarding

Hi, I'm currently looking at draft-ietf-netmod-sub-intf-vlan-model-03 to see whether we can use this as our main model for VLAN forwarding, and it appears the answer is no. There is no way to configure forwarding in this model; it is strictly about interfaces. The appendix gives the

Re: [netmod] Guideline on modeling including features and phased support by a device

Presumably you will have to decide on a sensible default value to use. What value will your actual device use after the software upgrade? That should be the value it stores in the data tree when performing the upgrade. From: netmod

Re: [netmod] I-D Action: draft-ietf-netmod-syslog-model-19.txt

Hi, Perhaps not directly relevant, but the following sentence stuck out to me: > Why not use the syslog/TLS specification, with the security features > administratively turned off within secure environments? I was under the impression that the IETF tries to ensure that TLS security is not

Re: [netmod] WG Last Call: draft-ietf-netmod-acl-model-15

Hi, Good point - adding on to that, I'd like to point out that there are more protocols that use ports besides TCP and UDP, such as SCTP and DCCP. If the port number was not protocol-specific then devices would also have to match SCTP ports, DCCP ports, and other protocol ports, even for

Re: [netmod] evaluation of "when" under NMDA

Hi, 'when' does not affect schema nodes, only data nodes. The schema nodes is essentially the YANG itself, without reference to any particular instance data. Given an example YANG fragment: list widgets { key name; leaf name {type string;} leaf can-frob {type

Re: [netmod] WG Last Call: draft-ietf-netmod-rfc7223bis-00

On page 37, "duplex" is mistyped as "duplexx". Other than this minor error, I believe this draft is ready for publication. From: netmod on behalf of Kent Watsen Sent: Wednesday, 29 November 2017 8:29 a.m.

Re: [netmod] WG Last Call: draft-ietf-netmod-rfc7277bis-00

Hi, I noticed the table in section 3 has been mangled - it has extra blank lines, entries in the wrong side of the table, and a missing pipe in the bottom right corner. Apart from that this draft looks good to me. From: netmod

Re: [netmod] New Version Notification for draft-ding-netmod-arp-yang-model-00.txt

Resending as I previously sent this to i-d-announces by mistake and it appears the whole message was rejected (i.e. it didn't get sent to netmod either) Hi Xiaojian, * The published module ietf-ip (RFC 7277) overlaps the data being provided in this module. Especially

Re: [netmod] New Version Notification for draft-ding-netmod-arp-yang-model-00.txt

Hi Xiaojian, * The published module ietf-ip (RFC 7277) overlaps the data being provided in this module. Especially your /arp/arp-tables and /arp/arp-static-tables seem to correspond to /interfaces-state/interface/ipv4/neighbor and /interfaces/interface/ipv4/neighbor from ietf-ip. I think

Re: [netmod] WGLC for draft-ietf-tictoc-1588v2-yang

Hi, I've reviewed the draft and found the following issues. * YANG enumeration values are conventionally lowercase, but the delay-mechanism-enumeration and port-state-enumeration types in the draft have uppercase values. * Similarly, hyphens should be used rather than underscores (pre-master

Re: [netmod] Potential additions to rfc6087bis: RegEx guidelines

Hi, I'd be very wary of adding guidelines that restrict the regex syntax. A tool that supports YANG must implement the full regex language anyway (or ignore regexes altogether if they are not relevant to the tool's function). However, these guidelines will inevitably encourage some tool

Re: [netmod] Query about augmenting module from submodule in YANG 1.0

Hi, I'm not Rob, but my understanding is that if a module author wanted to migrate to YANG 2.0, they could merge their submodules back into the main module - which is not a difficult procedure and does not break compatibility with clients. Alex From:

Re: [netmod] accessible tree for rpcs?

Why would it not make sense? Is your question about the datastores proposal? Usually an action will refer to some object that is defined as configuration and/or state, and may depend on the particular properties of that object. Here is a YANG fragment showing one possible application: list

Re: [netmod] draft-wilton-netmod-interface-properties-00

Hi, I would very much like to see this happen. However I recommend at least splitting up "ethernet-like" into "ethernet-mac-like" and "ethernet-phy-like". At Aviat we have microwave radio interfaces that behave like Ethernet at the MAC level but have totally different PHYs. The distinction is

Re: [netmod] ACL draft defines ether-type as a string

Doesn't this mean that if a new protocol is defined, then it won't be usable in ACLs until the server's data model is upgraded? (And with many devices, that is quite likely never) From: netmod on behalf of Mahesh Jethanandani

Re: [netmod] Defining configuraiton: was I-D Action: draft-ietf-netmod-rfc6087bis-13.txt

There are many different layers and all, or none of them could be called configuration depending on your perspective. Consider the current set of routes on a router. I think we can all agree that from the point of view of the Linux kernel, or a hardware routing chip, this is configuration data.

Re: [netmod] Question on intefaces-state model

Presumably a device is free to not implement an optional config=false node if that node would never be returned in a response anyway - as this will make no externally visible difference. However, if the model states or implies that the node is present under certain conditions (for example,

[netmod] Question about ietf-routing

Hi, I noticed that the ietf-routing YANG (published in RFC 8022) allows for multiple instances of each control plane protocol, as well as multiple RIBs per address family. However I don't see any way to associate one with the other. Without additional configuration, protocols will only place

Re: [netmod] I-D Action: draft-ietf-netmod-entity-03.txt

Hi, In the description of /hardware-state/component, which describes the procedure for matching newly added hardware components with pre-configured entries in /hardware/component: What happens if hardware-config is supported, and there is no entry with matching values for the nodes 'class',

Re: [netmod] Hi all, one issue about YANG deviate's Substatements

Hi, I believe you misunderstood the intention. A "when" statement inside a deviation would simply add/remove/update a "when" statement in the target module. It would not make the deviation conditional. I asked this some time ago, and for some reason I was told that it would be overly

Re: [netmod] Yang 1.1 change: Allow type "empty" in a key.

Hi, It means exactly what the summary says. In YANG 1.0 (RFC 6020) we have: A leaf that is part of the key can be of any built-in or derived type, except it MUST NOT be the built-in type "empty". and in YANG 1.1 (RFC 7950) we have: A leaf that is part of the key can be of any

Re: [netmod] top-level mandatory nodes

Shafer <p...@juniper.net> Sent: Thursday, 19 January 2017 12:51 p.m. To: Alex Campbell Cc: Ladislav Lhotka; NETMOD WG Subject: Re: [netmod] top-level mandatory nodes I was really looking for a use case. What's is a specific scenario where one would want a device to always repor

Re: [netmod] top-level mandatory nodes

The purpose of a mandatory config=false node is to say that the data is _always_ needed. In the case where the node is also top-level, if your server fails to provide that data, then your server is not compliant with the YANG. If the data is sometimes not needed, then the module author should

Re: [netmod] [Netconf] Decision on the Intended Status of the Revised DS Draft WAS:RE: :candidate, :writable-running and RESTCONF edits

IMO it should be treated like any other protocol error. Which means that an ideal client will report an error - but in practice they'll end up ignoring the constraint violation because it's easier to not do validation. This problem isn't specific to YANG - what happens if I make a request to an

Re: [netmod] WG Last Call for draft-ietf-netmod-syslog-model-11

his. Alex From: Clyde Wildes (cwildes) <cwil...@cisco.com> Sent: Friday, 16 December 2016 7:29 a.m. To: Alex Campbell Cc: netmod@ietf.org; Kent Watsen; Juergen Schoenwaelder Subject: Re: [netmod] WG Last Call for draft-ietf-netmod-syslog-model-11 Hi Alex, Thanks for your rev

Re: [netmod] "when" statement deviation

___ From: Andy Bierman <a...@yumaworks.com> Sent: Tuesday, 10 January 2017 11:20 a.m. To: Alex Campbell Cc: netmod@ietf.org Subject: Re: [netmod] "when" statement deviation Hi, This is not allowed because it is too complicated to implement. Changing the schema tree based on valu

[netmod] "when" statement deviation

Hi, I have a module that adds some configuration to interfaces (the specific feature being configured isn't important here, so I'll just call it "feature"). I want to implement this module, but the device I'm working on only supports the feature on some kinds of interfaces. So I want to add

Re: [netmod] WG adoption poll draft-wilton-netmod-intf-vlan-yang-04

Yes/support The main issue I have with this draft, that I would like to be addressed at some point, is the way it uses heavily restricted lists to model sequences of VLAN tags. It seems to me that something like the following would be much simpler, without losing any expressive power, in most

Re: [netmod] WG Last Call for draft-ietf-netmod-syslog-model-11

I am considering to implement the data model in this draft. I have reviewed this draft and found the following issues. In approximately decreasing order of severity: * In the "selector-facility" choice statement the cases have misleading names - the case where no facility is matched is named

Re: [netmod] Modelling different "levels" of data in YANG

IMO using an action or rpc is an okay solution for now, certainly better than than not including the data at all. Perhaps in the future the client could specify which YANG modules it cares about, in addition to a subtree filter. Then you could put the extended diagnostic information into

Re: [netmod] Corrections needed in the draft-ietf-netmod-entity-00

Hi, If you are referring to the circular reference in the expresssion 'derived-from-or-self(../class, "iana-entity", "sensor")', I would rather see sensor-data separated into another module than see entity-physical-class moved to iana-entity. This would be more consistent with the RFC 7223

Re: [netmod] How to constrain a leaf to a read-only list of supported values?

> Dale R. Worley writes: >> Ladislav Lhotka writes: >>> typedef Compression-Method { >>> ... >>> } >>> >>> list node { >>> config true; >>> key name; >>> >>> string name; >>> >>> leaf-list supported-compression-methods { >>> type

Re: [netmod] How to constrain a leaf to a read-only list of supported values?

What prevents features from being units of conformance? From: netmod on behalf of Juergen Schoenwaelder Sent: Friday, 2 September 2016 5:06 a.m. To: Andy Bierman Cc: netmod@ietf.org Subject:

Re: [netmod] [Netconf] What should a server response be? - depending on NP-containers

The intention in this case is obviously to evaluate the 'must' statement if the container contains any values; what would break if we said that A non-presence container exists in the data tree if and only if it has any children which exist in the data tree. thus disallowing the existence

Re: [netmod] OpsState and Schema-Mount

I think in this case it would make sense to implement both the hypothetical standard module's state data (which would be device-agnostic, such as a boolean value indicating whether each configured rule is active) and also a device-specific module providing access to the more detailed internal

Re: [netmod] OpsState Direction Impact on Recommended IETF YANG Model Structure

Isn't that exactly what the proposed applied configuration datastore is for? If a device doesn't allow management stations to create or remove list entries, but still creates or removes list entries itself, then it can publish them through the applied configuration datastore, while leaving the

Re: [netmod] YANG library update and new YANG guideline issue

My preference is not to add schema nodes that are not useful. If it is foreseen that other nodes will be added in the container then the container is fine; otherwise I see no reason to have one. From: netmod on behalf of Andy Bierman