Cisco c1111-8p Configure Internet Access

[whughes123]

I bought a Cisco ISR c1111-8p for my company to start the journey to CMMC compliance, and I cannot get this thing configured at all. I am brand new to Cisco and the CLI, but over the last few days I have learned enough. I have been searching Google and adding/removing to my config and I can't get my PC to access to internet. Here is my exact setup...

1.) I have an ethernet chord running from my ISP router/modem into the GigabitEthernet 0/0/0 (WAN) port

2.) I have an ethernet chord running from GigabitEthernet 0/1/0 (LAN) port into my PC

I have been trying for 2 days to get this working, I'm out of options and places to look online. Any help would be GREATLY appreciated. I have restored my config back from an archive, learned my lesson quickly. It's attached here...

[balaji.bandi · Accepted solution]

Try below config and let us know the outcome :

ip dhcp pool WEBUIPool
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 4.2.2.2
!
!
Interface GigabitEthernet0/0/0
description ISP-Router
ip address dhcp
ip nat outside
negotiation auto

no shutdown
!
interface Vlan1
no ip address pool WEBUIPool
ip address 192.168.1.1 255.255.255.0
ip nat inside
no autostate
no shutdown
!
access-list 10 permit 192.168.1.0 0.0.0.255
ip nat inside source list 10 interface GigabitEthernet 0/0/0 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet 0/0/0 dhcp (if this is DHCP you can try ip route 0.0.0.0 0.0.0.0 dhcp)
!

Try from Router are you able to ping 8.8.8.8 ?
Connect PC and check you able to get IP from pool 192.168.1.X
ping from PC to 192.168.1.1 and ping 8.8.8.8 - if this works you have internet working as expected

still issue

post latest config
show run
and below output

show IP interface brief
show IP route
show IP arp
show nat translations

[whughes123]

Thank you so much dude!!! It's working perfectly!!!

[amitpanwar]

Dear Sir,

Above config is also working for me with single ISP in single g0/0/0  WAN port.

But now I have to configure additional ISP in g0/0/1 WAN port.

kindly support on below mentioned secnerio.

DEVICE : CISCO 1111-4P
WAN PORTS : 2 no.  ( INTERNET FORM 2 SEPRATE ISP'S)
LAN PORTS : 4 (IN SINGLE VLAN)

ISP 1 (POWERGRID)  : G0/0/0 ---------------CISCO 1111-4P    ---------  G0/1/0 : LAN PORT

ISP 2 (RAILTETL)       : G0/0/1 ----------------                            ---------  G0/1/1  : LAN PORT

I UANBLE TO CONFIGURE INTERNETT SHARING IN WAN TO LAN PORTS. I WANT TO  MERGE BANDWDITH OF 2 ISP'S AND SHARE IN LAN.

REQUEST TO PROVIDE CLI CONFIGURATION OF MERGING BANDWITH OF 2 ISP AND PROVIDING INTNET IN 2 WAN PORTS AND  SHARING IT ON LAN PORTS.

THNAKS IN ADVANCE.

[balaji.bandi]

i have replied on other thread with more config.

[Beer Money]

Good day BB,  

I'm having very much a novice at best when it comes to this router, but I'm having the same issue with a C1111-4P, no internet access on the LAN.  I can ping the dns server from the console terminal so the ISP is connected.  I ran your commands to ensure the NAT was set up and ran into the following issue with some of the commands.  Any insight would be greatly appreciated.  

#no ip address pool WEBUIPool
% Pool WEBUIPool is not configuring this interface

[Beer Money]

I ran the show run command and the results are follows but one of the returns that stands out is "ip dhcp excluded-address 192.168.1.1 192.168.1.5" can you explain why that would be? 

Here's the result from show run:

Router#show run
Building configuration...

Current configuration : 6845 bytes
!
! Last configuration change at 15:09:43 GMT Sun Jun 29 2025
!
version 17.5
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
service call-home
platform qfp utilization monitor load 80
platform punt-keepalive disable-kernel-core
platform hardware throughput crypto 50000
!
hostname Home
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
clock timezone GMT -5 0
!
!
!
!
!
!
!
ip domain name Home
ip dhcp excluded-address 192.168.1.1 192.168.1.5
!
ip dhcp pool WEBUIPool
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 4.2.2.2
!
!
!
login on-success log
!
!
!
!
!
!
!
subscriber templating
multilink bundle-name authenticated
!
!
!
crypto pki trustpoint TP-self-signed-1615506262
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1615506262
revocation-check none
rsakeypair TP-self-signed-1615506262
!
crypto pki trustpoint SLA-TrustPoint
enrollment pkcs12
revocation-check crl
!
!
crypto pki certificate chain TP-self-signed-1615506262
certificate self-signed 01
30820330 30820218 A0030201 02020101 300D0609 2A864886 F70D0101 05050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 31363135 35303632 3632301E 170D3235 30363237 31363034
35305A17 0D333530 36323731 36303435 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 36313535
30363236 32308201 22300D06 092A8648 86F70D01 01010500 0382010F 00308201
0A028201 0100BE23 9138DCA2 25A8A321 E9DC0C6B E475B63F 3709AC08 D2BB3BC4
B395F94A 9C043B7B 50B3A8C8 C66BFB15 9E939560 9FD3D452 99C3A229 4DAFC3FD
42346280 643E1493 956C112E D73FC1F6 EF629902 EA667D8E B514E921 08639D8F
7E4DE82E EA37984D C92CC37F 55650565 26F24992 DD03D376 1993926A 095E6831
A5305935 12635FCB 0D3F8367 3D17ED50 E83E8A26 400EF306 727C18FB BE156148
96341B7B 1B5C7682 22754991 1D5A628B 3B6306A4 D6863011 3DFDE049 5A36A65C
53FAE0E6 275278A4 FFD20AEF 94D97FE5 57EDEEFC BD7F7ADC 4084D29E 0BD17C57
1FB812B9 89936F35 4124D468 4AA43670 56E486D9 168473EB A345FD34 FBFC5A3E
AC626730 D8830203 010001A3 53305130 0F060355 1D130101 FF040530 030101FF
301F0603 551D2304 18301680 1495F865 D4695368 662D5EFF 2C882C99 FA6C5A0D
5E301D06 03551D0E 04160414 95F865D4 69536866 2D5EFF2C 882C99FA 6C5A0D5E
300D0609 2A864886 F70D0101 05050003 82010100 040CFFE0 ADA66216 A2F9FC9E
51B449DD 05648CEF 8F7BAFD7 341FBF45 9CC604E7 3C9A32C4 A2EE394C 996E7EC7
B9FFF590 A123212B E8C41F7E F42BD2DE BE8E2A9B DD2DF8D5 52FF9847 97E53E67
37DC2ACE 0452B0D2 86609FB2 017E4E2F C95CCE1E 457C5410 A64B38A9 D4B0E36B
EEF16F07 E305FFBF 99D5D69B 78211834 879B1804 3B52D7CF D3BEE140 E759E22D
257B3FB2 55158486 6C1BB719 2ADCBF6F E1599570 77F6C671 11B7D937 82084C12
1283D2E3 3411582B 79C8CDCB 4B6AC7D3 7CF80EED 6FD83693 AC264E4E C9433907
98C6510E E9F4C0EF 0F8E1333 C0801861 496CB34A 9CDB3AC9 3CB809C1 AB6725EC
A77DCD6D 15949239 D81FD3F4 735AA7AE C0A6BFC1
quit
crypto pki certificate chain SLA-TrustPoint
certificate ca 01
30820321 30820209 A0030201 02020101 300D0609 2A864886 F70D0101 0B050030
32310E30 0C060355 040A1305 43697363 6F312030 1E060355 04031317 43697363
6F204C69 63656E73 696E6720 526F6F74 20434130 1E170D31 33303533 30313934
3834375A 170D3338 30353330 31393438 34375A30 32310E30 0C060355 040A1305
43697363 6F312030 1E060355 04031317 43697363 6F204C69 63656E73 696E6720
526F6F74 20434130 82012230 0D06092A 864886F7 0D010101 05000382 010F0030
82010A02 82010100 A6BCBD96 131E05F7 145EA72C 2CD686E6 17222EA1 F1EFF64D
CBB4C798 212AA147 C655D8D7 9471380D 8711441E 1AAF071A 9CAE6388 8A38E520
1C394D78 462EF239 C659F715 B98C0A59 5BBB5CBD 0CFEBEA3 700A8BF7 D8F256EE
4AA4E80D DB6FD1C9 60B1FD18 FFC69C96 6FA68957 A2617DE7 104FDC5F EA2956AC
7390A3EB 2B5436AD C847A2C5 DAB553EB 69A9A535 58E9F3E3 C0BD23CF 58BD7188
68E69491 20F320E7 948E71D7 AE3BCC84 F10684C7 4BC8E00F 539BA42B 42C68BB7
C7479096 B4CB2D62 EA2F505D C7B062A4 6811D95B E8250FC4 5D5D5FB8 8F27D191
C55F0D76 61F9A4CD 3D992327 A8BB03BD 4E6D7069 7CBADF8B DF5F4368 95135E44
DFC7C6CF 04DD7FD1 02030100 01A34230 40300E06 03551D0F 0101FF04 04030201
06300F06 03551D13 0101FF04 05300301 01FF301D 0603551D 0E041604 1449DC85
4B3D31E5 1B3E6A17 606AF333 3D3B4C73 E8300D06 092A8648 86F70D01 010B0500
03820101 00507F24 D3932A66 86025D9F E838AE5C 6D4DF6B0 49631C78 240DA905
604EDCDE FF4FED2B 77FC460E CD636FDB DD44681E 3A5673AB 9093D3B1 6C9E3D8B
D98987BF E40CBD9E 1AECA0C2 2189BB5C 8FA85686 CD98B646 5575B146 8DFC66A8
467A3DF4 4D565700 6ADF0F0D CF835015 3C04FF7C 21E878AC 11BA9CD2 55A9232C
7CA7B7E6 C1AF74F6 152E99B7 B1FCF9BB E973DE7F 5BDDEB86 C71E3B49 1765308B
5FB0DA06 B92AFE7F 494E8A9E 07B85737 F3A58BE1 1A48A229 C37C1E69 39F08678
80DDCD16 D6BACECA EEBC7CF9 8428787B 35202CDC 60E4616A B623CDBD 230E3AFB
418616A9 4093E049 4D10AB75 27E86F73 932E35B5 8862FDAE 0275156F 719BB2F0
D697DF7F 28
quit
!
!
license udi pid C1111-4PWB sn FGL2636LC2Q
memory free low-watermark processor 70642
!
diagnostic bootup level minimal
!
spanning-tree extend system-id
!
!
redundancy
mode none
!
!
vlan internal allocation policy ascending
!
!
!
!
!
!
interface GigabitEthernet0/0/0
description ISP-Router
ip address dhcp
ip nat outside
negotiation auto
!
interface GigabitEthernet0/0/1
ip address dhcp
negotiation auto
!
interface GigabitEthernet0/1/0
switchport mode access
!
interface GigabitEthernet0/1/1
switchport mode access
!
interface GigabitEthernet0/1/2
!
interface GigabitEthernet0/1/3
!
interface Wlan-GigabitEthernet0/1/4
!
interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
no autostate
!
ip http server
ip http authentication local
ip http secure-server
ip forward-protocol nd
ip dns server
ip nat inside source list 10 interface GigabitEthernet0/0/0 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/1
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/1 dhcp
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0 dhcp
!
!
ip access-list standard NAT_SRC_LIST
10 permit 192.168.1.0 0.0.0.255
!
!
ip access-list standard 10
10 permit 192.168.1.0 0.0.0.255
ip access-list extended 197
10 permit ip any any
!
!
!
control-plane
!
!
line con 0
transport input none
stopbits 1
line vty 0 4
login
length 0
transport input ssh
line vty 5 14
login
transport input ssh
!
call-home

[Beer Money]

Here are the show commands.  FYI This router is NOT plugged into the network of the ISP right now.  

Router#show run
Building configuration...

Current configuration : 6845 bytes
!
! Last configuration change at 15:09:43 GMT Sun Jun 29 2025
!
version 17.5
service timestamps debug datetime msec
service timestamps log datetime msec
platform qfp utilization monitor load 80
platform punt-keepalive disable-kernel-core
platform hardware throughput crypto 50000
!
hostname Home
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
clock timezone GMT -5 0
!
!
!
!
!
!
!
ip domain name Home
ip dhcp excluded-address 192.168.1.1 192.168.1.5
!
ip dhcp pool WEBUIPool
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8 4.2.2.2
!
!
!
login on-success log
!
!
!
!
!
!
!
subscriber templating
multilink bundle-name authenticated
!
!
!

!
!

quit
!
!
memory free low-watermark processor 70642
!
diagnostic bootup level minimal
!
spanning-tree extend system-id
redundancy
mode none
!
!
vlan internal allocation policy ascending
!
!
!
!
!
!
interface GigabitEthernet0/0/0
description ISP-Router
ip address dhcp
ip nat outside
negotiation auto
!
interface GigabitEthernet0/0/1
ip address dhcp
negotiation auto
!
interface GigabitEthernet0/1/0
switchport mode access
!
interface GigabitEthernet0/1/1
switchport mode access
!
interface GigabitEthernet0/1/2
!
interface GigabitEthernet0/1/3
!
interface Wlan-GigabitEthernet0/1/4
!
interface Vlan1
ip address 192.168.1.1 255.255.255.0
ip nat inside
no autostate
!
ip http server
ip http authentication local
ip http secure-server
ip forward-protocol nd
ip dns server
ip nat inside source list 10 interface GigabitEthernet0/0/0 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/1
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/1 dhcp
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0 dhcp
!
!
ip access-list standard NAT_SRC_LIST
10 permit 192.168.1.0 0.0.0.255
!
!
ip access-list standard 10
10 permit 192.168.1.0 0.0.0.255
ip access-list extended 197
10 permit ip any any

Router#show ip interface brief
Interface IP-Address OK? Method Status Protocol
GigabitEthernet0/0/0 unassigned YES manual down down
GigabitEthernet0/0/1 unassigned YES NVRAM down down
GigabitEthernet0/1/0 unassigned YES unset down down
GigabitEthernet0/1/1 unassigned YES unset down down
GigabitEthernet0/1/2 unassigned YES unset down down
GigabitEthernet0/1/3 unassigned YES unset down down
Wl0/1/4 unassigned YES unset up up
Vlan1 192.168.1.1 YES NVRAM up up
Router#show ip route
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected

Gateway of last resort is not set

192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, Vlan1
L 192.168.1.1/32 is directly connected, Vlan1
Router#show ip arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.1.1 - 3891.b740.db74 ARPA Vlan1
Internet 192.168.1.6 0 a00f.37a5.83e8 ARPA Vlan1
Internet 192.168.1.7 0 0000.5e00.0101 ARPA Vlan1
Router#show nat translation
% Ambiguous command: "show nat translation"
Router#show nat translations
% Ambiguous command: "show nat translations"
Router#

[balaji.bandi · Accepted solution]

try "show ip nat translations"

[Beer Money]

Good day.... I have internet access on the LAN!   Thank you!   Now on to troubleshoot Sonos settings in a different topic.  I appreciate your help!  

[somervilleprestige]

Check the Physical Connections:

Make sure that all cables are securely connected to the appropriate ports.
Check that the cable from your ISP router/modem is connected to the WAN port (GigabitEthernet 0/0/0).
Make sure the cable from the LAN port (GigabitEthernet 0/1/0) is connected to your computer.
Check the Interface Status:
To check the status of your interfaces, run the following command in the CLI:
This will show the status and IP addresses for your interfaces. Confirm that your ISP assigned an IP address to your WAN interface.
Check the DHCP configuration:
Make sure that DHCP is configured on the LAN interface to provide an IP address to your PC.

Check the NAT configuration:

Ensure that Network Address Translation (NAT) is configured for your WAN interface. Use the following

Prestige Somerville

[idanro]

Hi all,

I am newby at Cisco. 
I am trying to configure my new C1111-4P, but got stucked at some points:
I have no internet access on LAN ports 0/1/0, 0/1/1, 0/1/2, 0/1/3
WAN 1 is setup on 0/0/0, testing internet from WEB GUI works fine (see screenshot)
Running configuration is also here. 
I am able to access WEB UI from 0/1/0 - 0/1/3
Help is highly appreciated.

Current configuration : 6515 bytes
!
! Last configuration change at 12:36:56 UTC Sun Jul 13 2025
!
version 17.3
service timestamps debug datetime msec
service timestamps log datetime msec
! Call-home is enabled by Smart-Licensing.
service call-home
platform qfp utilization monitor load 80
platform punt-keepalive disable-kernel-core
platform hardware throughput crypto 50000
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
enable secret 9 xxx
enable password xxx
!
no aaa new-model
!
ip dhcp pool WEBUIPool
 network 192.168.1.0 255.255.255.0
 default-router 192.168.1.1
 dns-server 8.8.8.8 4.2.2.2
!
login on-success log
!
subscriber templating
multilink bundle-name authenticated
no device-tracking logging theft
!
crypto pki trustpoint TP-self-signed-xxx
 enrollment selfsigned
 subject-name cn=IOS-Self-Signed-Certificate-xxx
 revocation-check none
 rsakeypair TP-self-signed-xxx
!
crypto pki trustpoint SLA-TrustPoint
 enrollment pkcs12
 revocation-check crl
!
crypto pki certificate chain TP-self-signed-xxx
 certificate self-signed 01
  xxx
        quit
crypto pki certificate chain SLA-TrustPoint
 certificate ca 01xxx
       quit
!
!
license udi pid C1111-4P sn xxx
memory free low-watermark processor 71810
!
diagnostic bootup level minimal
!
spanning-tree extend system-id
!
username xxx privilege 15 password 0 xxx
!
redundancy
 mode none
!
!
vlan internal allocation policy ascending
!
interface GigabitEthernet0/0/0
 description ISP-Router
 ip address dhcp
 negotiation auto
!
interface GigabitEthernet0/0/1
 no ip address
 shutdown
 negotiation auto
!
interface GigabitEthernet0/1/0
!
interface GigabitEthernet0/1/1
!
interface GigabitEthernet0/1/2
!
interface GigabitEthernet0/1/3
!
interface Vlan1
 description Vlan1
 ip address 192.168.1.1 255.255.255.0
 ip nat inside
 no autostate
!
ip http server
ip http authentication local
ip http secure-server
ip forward-protocol nd
ip nat inside source list 10 interface GigabitEthernet0/0/0 overload
ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/0/0 dhcp
!
ip access-list standard 10
 10 permit 192.168.1.0 0.0.0.255
!
snmp-server community public RO
!
!
control-plane
!
!
line con 0
 transport input none
 stopbits 1
line vty 0 4
 password xxx
 login
 transport input ssh
!
call-home
xxx
  active
  destination transport-method http
!
end