Cisco WLC 5520 not able to ping

[arash brar]

I am not much experienced with WLC but I was deploying two 5520 WLCs and ran into this issue. These both are connected to a Nexus 9k, I have configured Management Port to have 10.8.3.97/24 with vlan tag 3 and made switchport an access port with accessing vlan 3 (our management vlan is 3).

I do not changed IP at RP port and it is configured 192.168.1.1 and I am able to login via webmode. After all this config I am not able to ping 10.8.3.97 neither from N9k nor from my PC if I directly connect mgmt port into my PC with my PC having IP from same network.

While pinging I am seeing Destination host unreachable, Where I am going wrong? what should be done to bring this network up. 

[Scott Fella]

With the 5520, if you define a vlan tag on the management interface, which you did, you need to just make sure that the trunk port has vlan 10 and that vlan 10 is not defined as native vlan as the controller is looking for that tag. The RP port should be back to back or on a separate vlan to avoid any congestion, even if the RP ip is on the same subnet as the wlc management.

[ammahend]

I think Scott meant vlan 3, yes just change the switch side to trunk if you are tagging the vlan on WLC side and make sure vlan 3 is allowed on the trunk and not set as native.

[Scott Fella]

Thanks for the correction:)

So since your management is vlan 3, make sure you have a trunk port and native vlan is NOT 3

To test how you have it now with an access port, change the vlan tag on the wlc to 0.

[arash brar]

This is the config on switchport interface

interface Ethernet1/35

description link to WLC1
switchport
switchport mode trunk
switchport trunk allowed vlan 3
no shutdown

and here is what I get when I am trying to ping 10.8.3.97

SEC-9504a(config)# ping 10.8.3.97
PING 10.8.3.97 (10.8.3.97): 56 data bytes
36 bytes from 10.8.3.2: Destination Host Unreachable
Request 0 timed out
36 bytes from 10.8.3.2: Destination Host Unreachable
Request 1 timed out
36 bytes from 10.8.3.2: Destination Host Unreachable
^C
--- 10.8.3.97 ping statistics ---
3 packets transmitted, 0 packets received, 100.00% packet loss

[Scott Fella]

That port negotiated (speed/duplex) properly with what the 5520 is setup for? By default the 5520 is 10gig.

With that config, then vlan 3 should be defined on the management interface.

[arash brar]

Speed set to 10 gig at interface

Here is more details of vlan3 interface

SEC-9504a# show run int vlan3

!Command: show running-config interface Vlan3
!Time: Mon Feb 18 14:30:47 2019

version 7.0(3)I4(8)

interface Vlan3
description Network Management
no shutdown
load-interval counter 3 60
no ip redirects
ip address 10.8.3.2/24
no ipv6 redirects
ip router ospf ******* area 0.0.0.0
hsrp version 2
hsrp 3
authentication md5 key-string '*****************"
preempt
ip 10.8.3.1