c892fsp-k9 no ip, no internet access on lan port

[arek r]

First of all, i'm completely new to cisco routers. I'm trying to configure Cisco 892 FSP-K9, followed few tutorials, forums but with no success. Pc connected through G0 - G7 can't get any IP address.

Router has 2 Wan ports connected to 2 different ISPs, both works correct, i can ping/traceroute any site from console, so i'm sure that router has internet access. Yesterday somehow I managed to configure device so PC leased IP from DHCP, but still couldnt get internet access.

I managed also Cisco CP Express 3.5- didnt change anything, just caused more problems, marked g9 as primary Wan caused this interface couldnt get IP from ISP anymore.

This morning tired of this, I reset device to factory default settings. Any suggestions what could be wrong? Or can anyone guide me step-by step?

[Seb Rupik]

Hi there,

Sounds like you didn't have NAT configured.

If you could share your running config, we can get it working for you. :)

cheers,

Seb.

[arek r]

Sure, i'm attaching file

[Seb Rupik · Accepted solution]

Hi there,

it is best practive not to use VLAN1 for user traffic, but for now we can leave it alone.

Add the following to get DHCP working:

!
ip dhcp pool DHCP_VLAN1
  network 192.168.1.0 255.255.255.0
  dns-server 8.8.8.8
  default-router 192.168.1.1
!
ip dhcp excluded-address 192.168.1.1
!

With the router connected to your ISP and pings from the router working to the internet, what is the output of:

sh ip route

sh ip nat stats

[arek r]

output of sh ip route

Gateway of last resort is xx.xx.109.225 to network 0.0.0.0

S*    0.0.0.0/0 [254/0] via 185.59.109.225
     xx.xx.0.0/16 is variably subnetted, 2 subnets, 2 masks
C        xx.xx.109.224/27 is directly connected, GigabitEthernet9
L        xx.xx.109.228/32 is directly connected, GigabitEthernet9

output of sh ip nat stat

Total active translations: 0 (0 static, 0 dynamic; 0 extended)
Peak translations: 0
Outside interfaces:
  GigabitEthernet9
Inside interfaces:
  Vlan1
Hits: 0  Misses: 0
CEF Translated packets: 0, CEF Punted packets: 0
Expired translations: 0
Dynamic mappings:
-- Inside Source
[Id: 1] access-list 10 interface GigabitEthernet8 refcount 0

Total doors: 0
Appl doors: 0
Normal doors: 0
Queued Packets: 0

[Seb Rupik]

Ah you have a typo in your NAT statement, remove the exising one and change it to this:

!
ip nat inside source list 10 interface GigabitEthernet9 overload
!

cheers,

Seb.

[arek r]

Nat statement removed and replaced with correct one u provided, but pc (which is directly plugged to router) still doesn't get IP from router.

I'm just curious about line

interface GigabitEthernet0
 no ip address

is it ok? this's a LAN port which PC is connected to,

[Seb Rupik]

Try:

!
int gi0
  switchport mode access
  spanning-tree portfast
!

Since you are using VLAN1 there is no need to specify it.

[arek r]

Did that what you wrote, but PC still doesnt get IP from DHCP.

result of sh ip int

GigabitEthernet0 is up , line protocol is up
   Internet protocol processing disabled

[Seb Rupik]

What's the output for

sh mac-address

sh ip dhcp pool

sh ip dhcp server statistics

[arek r]

sh mac-address

Destination Address     Address Type    VLAN    Destination Port
-------------------     ------------    ----    -----------------
3890.a59e.e9c8          Self               1    Vlan1
0025.64d9.2968          Dynamic            1    GigabitEthernet0

sh ip dhcp pool

Pool DHCP_VLAN1 network 192.168.1.0 255.255.255.0 :
 Utilization mark (high/low)    : 100 / 0
 Subnet size (first/next)       : 0 / 0
 Total addresses                : 0
 Leased addresses               : 0
 Pending event                  : none
 0 subnet is currently in the pool

sh ip dhcp server statistics

Memory usage         23789
Address pools        1
Database agents      0
Automatic bindings   0
Manual bindings      0
Expired bindings     0
Malformed messages   0
Secure arp entries   0

Message              Received
BOOTREQUEST          0
DHCPDISCOVER         208
DHCPREQUEST          5
DHCPDECLINE          0
DHCPRELEASE          0
DHCPINFORM           2

Message              Sent
BOOTREPLY            0
DHCPOFFER            0
DHCPACK              0
DHCPNAK              3

[Seb Rupik]

That's strange. Your DHCP pool has 0 free addresses and doesn't appear to be attached to the VLAN1 subnet.

What version of IOS are you running?

[arek r]

i believe that's it:

Cisco IOS Software, C800 Software (C800-UNIVERSALK9-M), Version 15.5(3)M4a, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Thu 06-Oct-16 14:23 by prod_rel_team

ROM: System Bootstrap, Version 15.2(3r)XC, RELEASE SOFTWARE (fc1)

[Seb Rupik]

As a sanity check, try adding the domain option to the pool:

!
ip dhcp pool DHCP_VLAN1
 domain-name example.com
!

[arek r]

Did it, but still .. it doesnt solve issue - PC si not getting IP from DHCP.