Forum Discussion
TJ_Vreugdenhil
Cirrus
CirrusCannot add F5 net route
Hello!
I am scratching my head because I can't see why this static route is not being added to the config. The "x" is replaced with a usable 1-254 IP.
Existing config:
net self INT-350_NET1_PRIMARY_IP {
address x.159.222.101/24
allow-service {
default
}
traffic-group traffic-group-local-only
vlan INT-350
}
net self INT-350_NET1_FLOATING_IP {
address x.159.222.103/24
allow-service {
default
}
floating enabled
traffic-group traffic-group-1
unit 1
vlan INT-350
}
net vlan INT-350 {
if-index 448
interfaces {
n7k-Po16 {
tag-mode service
tagged
}
}
tag 350
}
root@(sfltm1)(cfg-sync Standalone)(Active)(/Common)(tmos) load sys config merge from-terminal
Enter configuration. Press CTRL-D to submit or CTRL-C to cancel.
net route INT-350_NET1_ROUTE {
gw x.159.222.254
network x.159.222.0/24
}
Loading configuration...
01070666:3: Static route duplicates Self IP x.159.222.0 / 255.255.255.0 implied route
Unexpected Error: Loading configuration process failed.
Jad_Tabbara__J1Cirrostratus
How did you add this route ? CLI or from GUI
- Jad_Tabbara__J1
If you want to add a route using command line try the command below
tmsh create net route x.159.222.0/24 gw x.159.222.254
TJ_VreugdenhilThanks for the comment. Yes, I tried it via the GUI, CLI, & tmsh all with the same message.
I believe because the self IP is on the subnet it is suggesting not to force to add a route since the upstream Gateway will be will automatically be sending ARP replies for the subnet.
You could probably set the self IP's to a /32 mask and then set the route, but not sure that is appropriate either.
I think I'm good, I apparently didn't get to my coffee before I posted this question ;)
Faruk_AYDINNimbostratus
Before adding that route, try to change the self-ip subnet mask. I suggest you to change it from /24 to /28. Then you can add the route you want.
VIJO_JOEY_32403what is the command to add kernel routes ?
- Boggs_5738
the self ip is in the same subnet of the destination ip [implied route] in the route command so the route is not needed.
- VIJO_JOEY_32403
Thanks for the response BOGGS.
But my question is regarding Kernel IP routing table (Linux kernel routing table). When we give route -n , can see a set of routes like below;
Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 10.xx.xy.1 0.0.0.0 UG 0 0 0 back 0.0.0.0 10.xx.xy.1 0.0.0.0 UG 9 0 0 mgmt 10.0.0.0 10.xx.xy.1 255.0.0.0 UG 0 0 0 back 10.bb.cc.130 10.xx.xy.1 255.255.255.255 UGH 9 0 0 mgmt
I think this routes has to be added (or can be added) from bash mode with some "ip route add" command(i m not sure about that complete command and also not sure about adding the GENMASK).this is the command I was looking for .
I think Ill be getting the same result if I add route from tmsh with the below command; as both are intended for management routes (for taking administrative traffic) tmsh create /sys management-route network / gateway
- Boggs_5738
In general/recommended, you would use the tmsh commands on bigip to add the routes. and yes, tmsh sys management-route is another way of adding route entry specific to send traffic to a specific network via the mgmt interface.. the 'ip route' command will show all routes in the bigip, regardless if they are tmm or mgmt route..
here some reference that might be useful for this topic: K13284: Overview of management interface routing (11.x - 13.x)