Connect External Access Point to Cisco 887VAG-S-K9

[JulioGarcia]

Greetings!

I have a this cisco modem, i want to connect it two tenda n300 routers as access point. The problem is that when i set the tenda as an AP, it starts to run strange, and change between router mode and ap mode and vice versa. An my pc doesn't receive any ip config. When i connect my pc directly to the cisco router, it configures correctly and have internet access without any troubles. Could you help me please. Thanks in advance.

[Georg Pauwen]

Hello,

what is the exact Tenda model you have (e.g. N301) ? In any case, it needs to run in wirless AP mode. What IP addess do your wireless clients get when you connect the Tenda in router mode ?

[JulioGarcia]

Hello, when i connect the tenda in wireless Access Point its when the tenda starts to act weirdly

[JulioGarcia]

The tenda model is n301

[JulioGarcia]

This is my cisco 887VAG-S-K9 (887VAG2) configuration:

Building configuration...

Current configuration : 2718 bytes
!
! Last configuration change at 20:26:53 GMT Tue Dec 22 2020 by xxxx
version 15.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Gateway
!
boot-start-marker
boot-end-marker
!
!
logging buffered 51200 warnings
!
no aaa new-model
clock timezone GMT -6 0
!
!
!
!
!
!

!
ip dhcp excluded-address 10.10.10.1
!
ip dhcp pool ccp-pool
import all
network 10.10.10.0 255.255.255.248
default-router 10.10.10.1
dns-server 10.10.10.1
lease 0 2
!
!
!
ip domain name xxxxxxx
ip name-server 1.1.1.1
ip name-server 1.0.0.1
ip cef
no ipv6 cef
!
!
multilink bundle-name authenticated
license udi pid C887VAG-S-K9 sn FTX17318514
!
!
object-group network local_lan_subnets
10.10.10.0 255.255.255.128
!
username xxxxx privilege 15 secret 4 5z./8rDD.E83houtO7VeZDA9p/4w4iXUJeps/Q0jEAI
!
!
!
!
!
controller VDSL 0
operating mode adsl2+
!
controller Cellular 0
!
!
!
!
!
!
!
!
!
!
interface Ethernet0
no ip address
shutdown
!
interface ATM0
no ip address
no atm ilmi-keepalive
!
interface ATM0.1 point-to-point
description PrimaryWANDesc_
pvc 8/81
pppoe-client dial-pool-number 1
!
!
interface FastEthernet0
no ip address
!
interface FastEthernet1
no ip address
!
interface FastEthernet2
no ip address
!
interface FastEthernet3
no ip address
!
interface Cellular0
no ip address
encapsulation ppp
!
interface Vlan1
description $ETH_LAN$
ip address 10.10.10.1 255.255.255.248
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1452
!
interface Dialer1
description PrimaryWANDesc__ATM0
ip address negotiated
ip mtu 1452
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname xxxxxxxxxxxx
ppp chap password 0 xxxxxxxxx
ppp pap sent-username xxxxxx password 0 xxxxxxxx
ppp ipcp dns request
no cdp enable
!
ip forward-protocol nd
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
!
ip dns server
ip nat inside source list nat-list interface Dialer1 overload
ip route 0.0.0.0 0.0.0.0 Dialer1
!
ip access-list extended nat-list
permit ip object-group local_lan_subnets any
deny ip any any
!
access-list 23 permit 10.10.10.0 0.0.0.7
dialer-list 1 protocol ip permit
no cdp run
!
!
control-plane
!
!
!
line con 0
login local
no modem enable
line aux 0
line 3
no exec
speed 144000
line vty 0 4
access-class 23 in
privilege level 15
login local
transport input telnet ssh
line vty 5 15
access-class 23 in
privilege level 15
login local
transport input telnet ssh
!
!
end

P.D. Sensitive data has been replaced with xxxxxxxx

[JulioGarcia]

Also, I'm the owner of my network, so i can freely move any config you suggest. Thanks in advanced.

[Georg Pauwen]

Hello,

typically (with Cisco APs) you would configure the port on the router where the AP is connected to as trunk. Let's say he Tenda is connected FastEthernet0, the config would be:

interface FastEthernet0
switchport mode trunk

Can you give that a try ?

[JulioGarcia]

Ok, i think we are near the solution. I have make the configuration, and put in trunk mode the FastEthernet0, its the interface where my first AP is connnected, the other second one is conncted on FastEthernet1. Ok the tenda AP on FE0 are running ok now. But only one device, and was my phone, acquire the ip address and internet connection. The other devices  an PC are not getting the correct ip address from the ip address pool. But i find that when configuring the wi-fi manually, its when they have connection. How to do for the devices can get the ip, subnet mask, and gateway automatically? That's the question now. Thanks in advance.

[JulioGarcia]

So, Mr. George, what do you think about the last issue to fix? Thanks in advance.

[Georg Pauwen]

Hello,

which IP address is the phone getting ? The Tenda probably has its own DHCP server. If you can somehow disable that, it will most likely use the pool you configured on the Cisco router.

[JulioGarcia]

Mobile is getting Cisco 887 ip, and is connected to the tenda.

[Georg Pauwen]

Hello,

on the Cisco, turn on:

debug ip dhcp server events

Are the requests from the PC clients visible at all ?

[JulioGarcia]

Let me check. Thanks, i'm going to post the results here in a moment.

[JulioGarcia]

We are having troubles here with electricity, so in a few more time i'm going to debug and paste the results. Thanks.

[JulioGarcia]

Mr. Georg, this error are appearing on the console.

*Dec 24 18:44:35.196: %DTP-5-NONTRUNKPORTON: Port Fa0 has become non-trunk
*Dec 24 18:44:35.692: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0, changed state to down
*Dec 24 18:44:36.696: %LINK-3-UPDOWN: Interface FastEthernet0, changed state to up
*Dec 24 18:44:36.800: %DTP-5-TRUNKPORTON: Port Fa0 has become dot1q trunk

I have lost connection to internet, and mobile ip address becomes tenda ip addess, as if tenda is not configured in ap mode, althoug it is on ap mode. The pc where i manually config the ip addresses only get internet when the the interface enters on trunk mode again automatically.