SNMP Walk don't get IfName of Lots of Interfaces

Question

Hello dear Specialists,
I am facing a problem with a ASR9010 with IOS XR 4.2.3 that is preventing me from monitoring major of the Ethernet Interfaces with SNMP Walk.
Though the router posseses IfMIB iso.3.6.1.2.1.2.2.1.2 and have created the correspondings IfIndex and IfName, it is impossible to get them with the commandds snmpwalk -v 2c -c public or snmpwalk -v 2c -c public Name iso.3.6.1.2.1.2.2.1.2.IfIndex from the server. Only two Ethernet interfaces, tunnel-interfaces and sub-interfaces (only Bunddles in this case) return in the output. 
server~$ snmpwalk -v 2c -c public rdistcta5 iso.3.6.1.2.1.2.2.1.2
iso.3.6.1.2.1.2.2.1.2.41 = STRING: "GigabitEthernet0/6/0/13"
iso.3.6.1.2.1.2.2.1.2.298 = STRING: "TenGigE0/4/0/3"
iso.3.6.1.2.1.2.2.1.2.306 = STRING: "Bundle-Ether7.88"
iso.3.6.1.2.1.2.2.1.2.358 = STRING: "tunnel-te41"
iso.3.6.1.2.1.2.2.1.2.490 = STRING: "Bundle-Ether8.2192"....
ASR9k#sh snmp interface | i GigabitEthernet 
Wed Apr 15 16:56:25.123 BRGMT
ifName : GigabitEthernet0/6/0/2  ifIndex : 30
ifName : GigabitEthernet0/6/0/3  ifIndex : 31
ifName : GigabitEthernet0/6/0/4  ifIndex : 32
ifName : GigabitEthernet0/6/0/5  ifIndex : 33
ifName : GigabitEthernet0/6/0/6  ifIndex : 34
ifName : GigabitEthernet0/6/0/7  ifIndex : 35
server~$ snmpwalk -v 2c -c public rdistcta5 iso.3.6.1.2.1.2.2.1.2.35
iso.3.6.1.2.1.2.2.1.2.35 = No Such Instance currently exists at this OID
I beg your precious opinions.
Thanks in advance
Best Regards,
Ronie

Answer 1

Restart Process.
(admin)#Process restart snmpd
(admin)#process restart mibd_entity
(admin)#process restart mibd_interface