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Cisco Bug: CSCvs49134 - Duplicate Internal-Data 0/0 interfaces on vFTD deployments

Last Modified

May 13, 2020

Products (1)

  • Cisco Firepower Management Center

Known Affected Releases

6.2.3 6.3.0 6.4.0

Description (partial)

Internal-data interfaces are used for splitting internal communications between different management planes in FTD, on virtual FTD there are two Internal-data 0/0 interfaces with different nameifs, which while it has no functional impact, can be confusing at first glance to determine which interface is being reviewed. On HW platforms the internal-data interfaces increment as expected and are not duplicated:

In a vmware vFTD device on for example:
firepower# show interface ip brief
Interface                  IP-Address      OK? Method Status                Protocol
Internal-Data0/0           unassigned      YES unset  down                  up
Internal-Data0/0           unassigned      YES unset  up                    up

Interface Internal-Data0/0 "management-plane", is down, line protocol is up
  Hardware is net_vmxnet3, BW 1000 Mbps, DLY 10 usec

Interface Internal-Data0/0 "mgmt_plane_int_tap", is up, line protocol is up
  Hardware is en_vtun rev00, BW Unknown Speed-Capability, DLY 1000 usec

all virtual FTD deployments
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