All MIBs › ZYXEL-IPV6-PATH-MTU-MIB › zyPathMtuDiscoveryMtu
zyPathMtuDiscoveryMtu
Module: ZYXEL-IPV6-PATH-MTU-MIB
OID (symbolic): ZYXEL-IPV6-PATH-MTU-MIB::zyPathMtuDiscoveryMtu
OID (numeric): 1.3.6.1.4.1.890.1.15.3.36.1.1.1.3
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-only
Description: The MTU in the ICMPv6 packet too big error message.
What is zyPathMtuDiscoveryMtu?
This object reports the MTU value carried in an ICMPv6 'packet too big' error message that the switch received or generated as part of IPv6 Path MTU Discovery for a specific destination path. An administrator reads this to understand the actual usable MTU along a given IPv6 path, which is smaller than the local interface MTU when an intermediate link has a smaller MTU. For example, zyPathMtuDiscoveryMtu reporting 1280 for a path tells the admin that path's effective MTU is limited to IPv6's minimum, likely due to a tunnel or restrictive link somewhere along the route.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.890.1.15.3.36.1.1.1.3 snmpwalk -v2c -c public <target> ZYXEL-IPV6-PATH-MTU-MIB::zyPathMtuDiscoveryMtu
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.890.1.15.3.36.1.1.1.3.1 snmpget -v2c -c public <target> ZYXEL-IPV6-PATH-MTU-MIB::zyPathMtuDiscoveryMtu.1
SNMPv3 example:
snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> zyPathMtuDiscoveryMtu.1
Start monitoring ZyXEL IPv6-capable router/Layer 3 switch (per-destination discovered path-MTU/aging status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the ZYXEL-IPV6-PATH-MTU-MIB::zyPathMtuDiscoveryMtu OID value, configure state conditions and alerts, and monitor any ZyXEL IPv6-capable router/Layer 3 switch (per-destination discovered path-MTU/aging 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 | NWA1100 |
| 1.3.6.1.4.1.890.1 | nwaSeries | NWA1100 |
| 1.3.6.1.4.1.890.1.15 | enterpriseSolution | ZYXEL-ES-SMI |
| 1.3.6.1.4.1.890.1.15.3 | esMgmt | ZYXEL-ES-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.890.1.15.3.36 | zyxelIpv6PathMtu | ZYXEL-IPV6-PATH-MTU-MIB |
| 1.3.6.1.4.1.890.1.15.3.36.1 | zyxelPathMtuDiscoveryStatus | ZYXEL-IPV6-PATH-MTU-MIB |
| 1.3.6.1.4.1.890.1.15.3.36.1.1 | zyxelPathMtuDiscoveryTable | ZYXEL-IPV6-PATH-MTU-MIB |
| 1.3.6.1.4.1.890.1.15.3.36.1.1.1 | zyxelPathMtuDiscoveryEntry | ZYXEL-IPV6-PATH-MTU-MIB |
| 1.3.6.1.4.1.890.1.15.3.36.1.1.1.3 | zyPathMtuDiscoveryMtu | ZYXEL-IPV6-PATH-MTU-MIB |