All MIBs › ZYXEL-DHCP-SERVER-MIB › zyDhcpServerSecondaryDNS
zyDhcpServerSecondaryDNS
Module: ZYXEL-DHCP-SERVER-MIB
OID (symbolic): ZYXEL-DHCP-SERVER-MIB::zyDhcpServerSecondaryDNS
OID (numeric): 1.3.6.1.4.1.890.1.15.3.19.1.2.1.7
Node type: OBJECT-TYPE
Type: IpAddress
Access: read-write
Description: The IP addresses of secondary DNS server. The DNS servers are passed to the DHCP clients along with the IP address and the subnet mask.
What is zyDhcpServerSecondaryDNS?
This is the IP address of the secondary DNS server passed to DHCP clients on this VLAN, distributed alongside the leased IP address and subnet mask as a fallback if the primary DNS server is unreachable. Admins configure it to give clients DNS redundancy without needing per-device configuration. For example, if zyDhcpServerPrimaryDNS points to an internal DNS server, this field might be set to a public resolver like 1.1.1.1 as backup.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.890.1.15.3.19.1.2.1.7 snmpwalk -v2c -c public <target> ZYXEL-DHCP-SERVER-MIB::zyDhcpServerSecondaryDNS
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.890.1.15.3.19.1.2.1.7.1 snmpget -v2c -c public <target> ZYXEL-DHCP-SERVER-MIB::zyDhcpServerSecondaryDNS.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.890.1.15.3.19.1.2.1.7.1 a <value>
Start monitoring ZyXEL gateway/router, DHCP server (address-pool/active-lease/static-binding status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ZYXEL-DHCP-SERVER-MIB::zyDhcpServerSecondaryDNS OID value, configure state conditions and alerts, and monitor any ZyXEL gateway/router, DHCP server (address-pool/active-lease/static-binding status) from a single console.
OID Breakdown
Upper-level ancestors (10 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.890 | zyxel | IES5206-MIB |
| 1.3.6.1.4.1.890.1 | products | IES5206-MIB |
| 1.3.6.1.4.1.890.1.15 | nwa1100nh | NWA1100-NH |
| 1.3.6.1.4.1.890.1.15.3 | esMgmt | NWA1100-NH |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.890.1.15.3.19 | zyxelDhcpServer | ZYXEL-DHCP-SERVER-MIB |
| 1.3.6.1.4.1.890.1.15.3.19.1 | zyxelDhcpServerSetup | ZYXEL-DHCP-SERVER-MIB |
| 1.3.6.1.4.1.890.1.15.3.19.1.2 | zyxelDhcpServerTable | ZYXEL-DHCP-SERVER-MIB |
| 1.3.6.1.4.1.890.1.15.3.19.1.2.1 | zyxelDhcpServerEntry | ZYXEL-DHCP-SERVER-MIB |
| 1.3.6.1.4.1.890.1.15.3.19.1.2.1.7 | zyDhcpServerSecondaryDNS | ZYXEL-DHCP-SERVER-MIB |