There is no response (no error, no timeout) when querying SNMP 64-bit (High-Capacity) counters on VSX.
Example:
[Expert@VSX:0]# snmpwalk -n ctxname_vsid1 -v 3 -l authNoPriv -u <username> -A <password> localhost ifHCInOctets [Expert@VSX:0]#
Affected environments:
The configuration file /etc/snmp/vsx-proxy/snmpd.vsx.proxy.conf was not updated with new configuration relevant for R77.30