Bug ID 1026605: When bigd.mgmtroutecheck is enabled monitor probes may be denied for non-mgmt routes

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP LTM, TMOS(all modules)

Known Affected Versions:
12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3,, 14.1.4,,,,,, 15.0.0, 15.0.1,,,,, 15.1.0,,,,,, 15.1.1, 15.1.2,, 15.1.3,, 15.1.4,, 15.1.5, 16.0.0,, 16.0.1,,, 16.1.0, 16.1.1, 16.1.2,

Fixed In:
17.0.0,,,, 13.1.5

Opened: Jun 16, 2021

Severity: 4-Minor


When bigd.mgmtroutecheck is enabled and monitors are configured in a non-default route-domain, bigd may calculate the interface index incorrectly. This can result in monitor probes improperly being denied when they egress a non-mgmt VLAN. Or monitor probes might be allowed to egress the management interface


Monitor probes may be denied even thought they egress a non-mgmt VLAN. Monitor probes may be improperly allowed out a mgmt interface. /var/log/ltm: err bigd.0[19431]: 01060126:3: Health check would route via mgmt port, node fc02:0:0:b::1%1. Check routing table. bigd debug log: :(_do_ping): probe denied; restricted egress device and route check [ tmm?=false td=true tr=false addr=fc02:0:0:b::1%1:0 srcaddr=none ]


-- Bigd.mgmtroutecheck is enabled. -- Monitor probes in a non-default route domain -- More than one VLAN configured in the route-domain


Disable bigd.mgmtroutecheck, reduce the number of VLANs inside the route-domain

Fix Information

The Bigd interface index is now calculated properly

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips