Cisco IOS XR Software, Version 7.0.1 Netconf

[kanjarladevika]

Established Netconf connection using ssh, Received Hello Message from device along with capabilities.

I sent below Hello message
<?xml version="1.1" encoding="UTF-8"?>
<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.1</capability>
</capabilities>
</hello>]]>]]>

After this connection gets terminated abruptly after two enters. But In log I can see that Hello message validation is successful.
May 16 15:21:45.040 netconf/netconf.trace 0/RP0/CPU0 t20216 #2617816: TRC: nc_sm_rcv_eom:5010 Hello message validation success.

If I set chucked Hello message like below, I'm not getting any response.
#195
<?xml version="1.0" encoding="UTF-8"?>
<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.1</capability>
</capabilities>
</hello>
##

Below get request is also not returning anything

#320
<?xml version="1.0" encoding="utf-8"?>
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
<get>
<filter>
<interfaces xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-pfi-im-cmd-oper">
<interface-xr>
<interface/>
</interface-xr>
</interfaces>
</filter>
</get>
</rpc>
##

Can you please help me with this.

[bigevilbeard]

Looking at your output, your device successfully process your hello message, this part is ok. But you here are mixing two different netconf framing methods you see in your first attempt, you used the older end-of-message delimiter ]]>]]> (NETCONF 1.0) but later attempt, you are trying to use chunked framing (NETCONF 1.1) (with #195 and #320), the end device might not support or correctly handle this specific chunking mechanism for the hello message.

Try this as your request 

<?xml version="1.0" encoding="utf-8"?>
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
  <get>
    <filter>
      <interfaces xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-pfi-im-cmd-oper">
        <interface-xr>
          <interface/>
        </interface-xr>
      </interfaces>
    </filter>
  </get>
</rpc>

[kanjarladevika]

I sent below Hello message
<?xml version="1.1" encoding="UTF-8"?>
<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.1</capability>
</capabilities>
</hello>]]>]]>

After this connection gets terminated abruptly after two enters with below statement.

Connection to <device ip> closed by remote host.

This this why, I tried with chunked framework.

[kanjarladevika]

Below are the device capabilities

<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.1</capability>
<capability>urn:ietf:params:netconf:capability:candidate:1.0</capability>
<capability>urn:ietf:params:netconf:capability:rollback-on-error:1.0</capability>
<capability>urn:ietf:params:netconf:capability:validate:1.1</capability>
<capability>urn:ietf:params:netconf:capability:confirmed-commit:1.1</capability>
<capability>urn:ietf:params:netconf:capability:notification:1.0</capability>
<capability>urn:ietf:params:netconf:capability:interleave:1.0</capability>

[bigevilbeard]

I just tested this on the devnet sandbox, this format works correctly with the XR device.

<?xml version="1.0" encoding="UTF-8"?>
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
  <get>
    <filter>
      <interfaces xmlns="http://cisco.com/ns/yang/Cisco-IOS-XR-pfi-im-cmd-oper">
        <interface-xr>
          <interface/>
        </interface-xr>
      </interfaces>
    </filter>
  </get>
</rpc>

[kanjarladevika]

can you share device version

[bigevilbeard · Accepted solution]

I’m not sure would need to check 

sandbox-iosxr-1.cisco.com

22

830

57722

57777

admin

C1sco12345

[bigevilbeard]

So it closes as it gets something it does not like is my guess, have you tried <?xml version="1.0" encoding="UTF-8"?>? 

[kanjarladevika]

yes, below is my Hello request to the device

<?xml version="1.0" encoding="UTF-8"?>
<hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="101">
  <capabilities>
    <capability>urn:ietf:params:netconf:base:1.1</capability>
  </capabilities>
</hello>
]]>]]>