The Ethernet management switch is a 48-port Cisco 4948 Gigabit Ethernet switch. Refer to the Cisco documentation for restoration instructions, and use the switch's osc-config-backup data.
The backup files are located in the osc-config-backup/mngt-switch directory.
root# su - oscbackR oscbackR$ ls -lhtr osc-config-backup/mngt-switch total 30357 -rw-rw-rw- 1 root root 3.6K May 11 01:55 running-config.2016.05.11.01.16 -rw-rw-rw- 1 root root 3.5K May 11 01:56 startup-config.2016.05.11.01.16 -rw-rw-rw- 1 root root 15M May 11 01:56 cat4500-ipbase-mz.122-53.SG2.bin.2016.05.11.01.16