C9105AXI EWC default route not working

[marvin9876]

Software: 17.06.04

Hello,

did the Day 0 Wizzard like described in the whitepaper:

https://www.cisco.com/c/en/us/products/collateral/wireless/embedded-wireless-controller-catalyst-access-points/white-paper-c11-743398.html#Gettingstarted

Exceptions are that I simplified the test with only one vlan untagged on the switchport the EWC-AP is connected to and I want to give an static IP instead of DHCP.

After that I can ping the IP of the EWC-AP within the same subnet. next I configured a default route (ip route x.x.x.x x.x.x.x x.x.x.x) but cannot reach the AP from an other subnet aswell as the AP cant reach other subnets via ICMP. Also disabling ip routing and setting a ip default-gateway does not work. Why is this basic function such a pain and why is there no field for defgw in the Day-0 Wizzard on GUI and CLI ?!?!

Also after I reboot I cant even ping the given IP from within the same subnet and the AP cant ping its own IP aswell. The show ip interface show the if on gig0 as up:

GigabitEthernet0 is up, line protocol is up
Internet address is 10.x.x.5/24
Broadcast address is 255.255.255.255

the route is in the routing table:

S* 0.0.0.0/0 [1/0] via 10.x.x.1

 I removed the default interface route (ip route 0.0.0.0 0.0.0.0 GigabitEthernet0).

Help would be much appreciated.

[marvin9876 · Accepted solution]

Now I have a DHCP Server running on the coreswitch which gives an IP and a default gateway to the AP. After this in the "day-0-wizzard" I have configured the EWC with an IP in the Subnet of the AP DHCP-Lease. Afterwards I can ping hosts in other Subnets without the configuration of a default Gateway. This leads me to the conclusion that the EWC routes its traffic via the AP. The Routing on the EWC is done via the default Interface Route (ip route 0.0.0.0 0.0.0.0 GigabitEthernet0 250) and then switched on the network with the source MAC configured per default on the GE0 Interfcace (e.g. mac-address 0000.5e00.0101). Traffic from the AP is switched with a Source MAC of the AP (Label on the back).

Spoiler

To get the EWC up and running with a static IP the AP needs an IP and default Gateway and these need to be in the same subnet as EWC mgmt IP.

[Rich R]

> This leads me to the conclusion that the EWC routes its traffic via the AP.
I disagree.

> AP needs an IP and default Gateway and these need to be in the same subnet as EWC mgmt IP.
This is a requirement and a logical necessity because they share the same physical port connected to the network and you can't use VLANs on the WLC part.