Huawei S6720 BGP session VRF

Probably this trouble for your platform, I found this thread:
https://forum.huawei.com/enterprise/en/6720-bgp-vpn-and-mibs/thread/575408-861

We already support discovery/polling in-VRF BGP sessions by HUAWEI-BGP-VPN-MIB.

But your device does not give any data at this Oid/MIB:

$ snmpwalk -v2c -c<community> -M ../rfc:../net-snmp:. -m HUAWEI-BGP-VPN-MIB <hostname> .1.3.6.1.4.1.2011.5.25.177

HUAWEI-BGP-VPN-MIB::hwBgpMIB = No more variables left in this MIB View (It is past the end of the MIB tree)

Probably you limited snmp view in device config or you need to enable some other option on device so that this data is sent.

Attached the myagent.snmpwalk

SNMPwalk (as written above) or snmp access to real device required.

Please make and attach additional information about the device:

• full snmp dump from device:

  snmpwalk -v2c -c <community> --hexOutputLength=0 -ObentxU <hostname> .1 > myagent.snmpwalk

  snmpwalk -v2c -c <community> --hexOutputLength=0 -ObentxU <hostname> .1.3.6.1.4.1 >> myagent.snmpwalk

  If device not support SNMP version 2c, replace -v2c with -v1.

• If you have problems with discovery or poller processes, please do and attach these debugs:

  ./discovery.php -d -h <device>

  ./poller.php -d -h <device>

• additionally attach device and/or vendor specific MIB files

Note, this comment is added automatically.