topic Re: 9800L WLC - Configuration on Ge0 Interface in Wireless

9800L WLC - Configuration on Ge0 Interface

RGilbert — Fri, 18 Mar 2022 15:11:46 GMT

Addendum, not configured by me:) I have my management interface that shows this below.

GigabitEthernet0 unassigned YES TFTP down down, which the operational status is obviously down.

The TFTP piece of this, need it to be DHCP. Is this something that can be configured in cli (I can't seem to locate that config) or is something I can only change when configuring for the first time/Day0 config? Thanks for any help.

Re: 9800L WLC - Configuration on Ge0 Interface

Ambuj M — Fri, 18 Mar 2022 15:37:01 GMT

see “Gigabit Ethernet Management Interface Overview” section

https://www.cisco.com/c/en/us/td/docs/wireless/controller/9800/9800-40/installation-guide/b-wlc-ig-9800-40/power-up-and-initial-configuration.html

Re: 9800L WLC - Configuration on Ge0 Interface

RGilbert — Fri, 18 Mar 2022 15:45:29 GMT

Thank you for this doc, reviewing momentarily! Super fast on this and I appreciate that!

Re: 9800L WLC - Configuration on Ge0 Interface

RGilbert — Fri, 18 Mar 2022 17:07:36 GMT

This is actually not a very helpful document. This goes into all the physical portions of 9800. Going to keep looking.

Re: 9800L WLC - Configuration on Ge0 Interface

Ambuj M — Fri, 18 Mar 2022 19:10:34 GMT

you are welcome that’s why I asked you to look at specific section 🙂 🙂

Re: 9800L WLC - Configuration on Ge0 Interface

Arshad Safrulla — Fri, 18 Mar 2022 20:12:35 GMT

TFTP means configuration for that interface came from the configuration file provided by the TFTP server. If you assign an IP manually it will change to manual and then if you save and restart it will show NVRAM. If you add ip address dhcp under the interface it will show you DHCP.

Now regarding GE0, this is the out of band management port (similar to service port in AireOS WLC's). With the new 9800 platforms IOS-XE became the preferred IOS, so to maintain complete out of band connectivity GE0 resides in it's own VRF called "Mgmt-intf". If you need to get it working I would suggest you do the below.

ip route vrf Mgmt-intf 0.0.0.0 0.0.0.0 dhcp

interface GigabitEthernet0
vrf forwarding Mgmt-intf
ip address dhcp

no shutdown
negotiation auto

Services (means NTP, TACACS, Radius etc.) available via this interface changes from IOS to IOS, So I recommend you read the release notes of the IOS-XE code you are running to get more clarity.

Re: 9800L WLC - Configuration on Ge0 Interface

Rich R — Sat, 19 Mar 2022 14:14:18 GMT

To add further explanation to @Arshad Safrulla's reply - the Mgmt-intf VRF was not fully supported by services in earlier versions of IOS-XE for 9800. The very latest releases have all the basics working now but you'll need to check for any specific things you want to use in that VRF to make sure they're supported. As Arshad said - refer to the release notes (new features and resolved caveats) to confirm which versions added the management VRF support.