ASR9K VLL configuration failed to create/delete by netconf-yang

andryang · ‎07-27-2016

One of my telecom customer is trying to use netconf-yang to provision production system ASR9K, when they try following configuration, three problem met, may I have your support to check if ASR9K/IOS-XR support these configuration on yang model now?

Problem-1: does “service-policy” supported by YDK-API in IOS-XR 6.0.1?

Customer use YDK-Py sandbox to get VLL(VPWS) running configuration of ASR9K, the result is most of configuration could be successfully obtain except “service-policy input/output”, is it supported now?, if not, roadmap?

interface Bundle-Ether10001.100 l2transport

description "Leaseline_Number--10013--20M/5M"

encapsulation dot1q 100

rewrite ingress tag pop 1 symmetric

mtu 1580

bundle load-balancing hash auto

service-policy input eco-x

service-policy output eco-x

!

l2vpn

xconnect group eco

p2p 10013

interface Bundle-Ether10001.100

neighbor ipv4 172.16.20.1 pw-id 10013

pw-class control-word

!

description "Leaseline_Number--10013--20M/5M"

!

YDK-Py polling result:

:

<interface-configurations xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-ifmgr-cfg">

<interface-configuration>

<interface-name>Bundle-Ether10001.100</interface-name>

<interface-mode-non-physical>l2-transport</interface-mode-non-physical>

<description>"Leaseline_Number--10013--20M/5M"</description>

<ethernet-service xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-l2-eth-infra-cfg">

<outer-tag-type>match-dot1q</outer-tag-type>

<outer-range1-low>100</outer-range1-low>

</encapsulation>

<rewrite-type>pop1</rewrite-type>

</rewrite>

</ethernet-service>

<mtus>

<mtu>

</mtu>

</mtus>

<bundle-load-balancing>

<hash-function>

<hash-type>efp-auto</hash-type>

<hash-value>1</hash-value>

</hash-function>

</bundle-load-balancing>

</bundle>

</interface-configuration>

</interface-configurations>

:

<xconnect-groups>

<xconnect-group>

<p2p-xconnects>

<p2p-xconnect>

<attachment-circuits>

<attachment-circuit>

<name>Bundle-Ether10001.100</name>

</attachment-circuit>

</attachment-circuits>

<class>control-word</class>

</neighbor>

<pseudowire-id>10013</pseudowire-id>

</pseudowire>

</pseudowires>

<p2p-description>"Leaseline_Number--10013--20M/5M"</p2p-description>

</p2p-xconnect>

</p2p-xconnects>

</xconnect-group>

</xconnect-groups>

</database>

:

Problem-2: continue the problem-1, when use YDK API to create a VLL circuit configuration, following error result was presenting, you can please refer to attached log file “problme2-vll description error message.txt & problem2-xxx.py”. However, when the “p2p-description” was removed, the configuration could be created successfully without error. May I know the reason?

<?xml version="1.0"?>

<rpc-reply message-id="urn:uuid:eb2cb296-4d50-11e6-b485-08002722cb22" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">

<rpc-error>

<error-type>protocol</error-type>

<error-tag>bad-element</error-tag>

<error-severity>error</error-severity>

<error-path xmlns:ns1="http://cisco.com/ns/yang/Cisco-IOS-XR-l2vpn-cfg">ns1:l2vpn/ns1:database/ns1:xconnect-groups/ns1:xconnect-group[name = 'hinet-eco']/ns1:p2p-xconnects/ns1:p2p-xconnect[name = '10015']/ns1:p2p-description</error-path>

<error-info>

<bad-element>p2p-description</bad-element>

</error-info>

</rpc-error>

</rpc-reply>

Problem-3 : Can not delete VLL circuit configuration by using netconf-yang

*** follows are example configuration of VLL circuit.

interface Bundle-Ether10001.200 l2transport

description "223Y1006--10016--20M/5M"

encapsulation dot1q 200

rewrite ingress tag pop 1 symmetric

mtu 1580

bundle load-balancing hash auto

!

l2vpn

xconnect group hinet-eco

p2p 10016

interface Bundle-Ether10001.200

neighbor ipv4 172.16.10.2 pw-id 10016

pw-class control-word

!

*** use the “problem3-Fail-nc-delete-p2p-ydk.py” to delete the “p2p 10016” circuit, the result was failed and got following error message:

vagrant@ydk-py:models$ ./Fail-nc-delete-p2p-ydk.py -v ssh://cisco:cisco@172.20.10.7

2016-07-21 08:13:28,611 - ydk.providers.NetconfServiceProvider - INFO - NetconfServiceProvider connected to 172.20.10.7:None using ssh

Traceback (most recent call last):

File "./Fail-nc-delete-p2p-ydk.py", line 91, in <module>

crud.delete(provider, l2vpn.database.xconnect_groups.xconnect_group.p2p_xconnects.p2p_xconnect)

AttributeError: 'YList' object has no attribute 'p2p_xconnects'

vagrant@ydk-py:models$

*** use the problem3-nc-delete-xc-group-ydk.py to delete whole xconnect group “hinet-eco”, the result is successful.

einarnn · ‎08-01-2016

Andrew,

For problem 1, I'm afraid that the service policy statement is not supported in XR 6.0.1, but will be in XR 6.1.1.

Cheers,

Einar

abhirame · ‎08-01-2016

Hi Andrew,

For problem 3, the way to delete a list instance is to create an instance and extend the parent's list with it. There is an example here. Hope this helps.

Thanks,

Abhi

xiaoqinz · ‎08-01-2016

Hi Andrew,

For problem 2, the regex for p2p-description leaf is "[\w\-\.:,_@#%$\+=\|;]+" (link for YANG model), so it is not compatible with value "\"223Y1006--10016--20M/5M\"", maybe it could be changed to some other value? Such as "223Y1006--10016--20M|5M".

Thanks,

Xiaoqin