F5 Management IP Troubleshooting

[Cowboy Denny]

Management Interface

tmsh list /sys management-ip

tmsh list /sys management-route

tmsh show sys mac-address | grep -i mgmt
00:94:a1:ec:06:02 net interface mgmt mac-address

ip addr show mgmt
5: mgmt: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
link/ether 00:94:a1:ec:06:02 brd ff:ff:ff:ff:ff:ff
inet 10.44.136.105/23 brd 10.44.137.255 scope global mgmt
valid_lft forever preferred_lft forever
inet6 fe80::294:a1ff:feec:602/64 scope link
valid_lft forever preferred_lft forever

ip a | grep -A 2 mgmt
3: eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc mq master mgmt state UP qlen 1000
link/ether 00:94:a1:ec:06:02 brd ff:ff:ff:ff:ff:ff
inet6 fe80::294:a1ff:feec:602/64 scope link
--
5: mgmt: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP qlen 1000
link/ether 00:94:a1:ec:06:02 brd ff:ff:ff:ff:ff:ff
inet 10.44.136.105/23 brd 10.44.137.255 scope global mgmt
valid_lft forever preferred_lft forever
inet6 fe80::294:a1ff:feec:602/64 scope link

tmsh list net interface mgmt
net interface mgmt {
if-index 32
mac-address 00:94:a1:ec:06:02
media-active 1000T-FD
media-max 1000T-FD
}

 

Disable MGMT interface

tmsh modify net interface mgmt disabled

 

Clear MGMT interface status

tmsh reset-stats net interface mgmt

 

Enable MGMT interface

tmsh modify net interface mgmt enabled

ARPING

arping -I mgmt 10.44.136.1

tmsh show net arp

view all routes on system

tmsh show /net route

view all static routes

tmsh list /net route

tcpdump on mgmt interface

tcpdump -s0 -nnni mgmt -vvv

capture tcpdump into a pcap file

tcpdump -s0 -nnni mgmt -vvv -w /var/tmp/mgmt-interface_$(date +%d_%b_%H_%M_%S)_$HOSTNAME.pcap

 

Check out the media of the mgmt interface

tmsh list /net interface mgmt media-active
net interface mgmt {
media-active 1000T-FD
}

 

change from auto speed and auto duplex to 100Mb Full Duplex

tmsh modify net interface mgmt media 100TX-FD

 

Reconfigure IP address for management IP and default gateway

tmsh create /sys management-ip 10.44.136.105/23
tmsh modify /sys management-route default gateway 10.44.136.1