06-26-2022 02:12 PM
I'm new to all this.
After a factory reset, I can attach the router to the internet with a static ip and ping 8.8.8.8
Installed 16port service module sm-es2-16-p.
My goals are to attach all in home network devices to the 16 port switch with DHCP and access internet via the router(edge) and cable modem.
DHCP is configured and does assign ip's to devices.
My issue is, fathoming all this vlan. I'm not up to speed on it.
So, I'm just asking for help how to setup the connection between the internal switch and the router.
So, when advice is offered, please comment the specific commands I need to issue.
Any help is muchly appreciated.
06-26-2022 02:36 PM
If the etherswitch in in slot 2, you will have a new interface in the router of G2/0 (or something like that). That is the interface that ties the router to the etherswitch module. That would be your inside interface for NAT. That should give you somewhere to start. If not, please post the config of the router and etherswitch module. They are separate devices with their own unique config.
06-26-2022 02:51 PM - edited 06-26-2022 02:51 PM
I would make all the ports in the etherswitch static access ports (switchport mode access + switchport nonegotiate). One thing that leaps out at me is the default router is wrong in your dhcp pool. You have
default-router 192.168.0.1
Shouldn't that be
default-router 192.168.1.1
06-26-2022 02:58 PM
Ok, I fixed the default router to 192.168.1.1,
but the switchport mode I'm not familiar with. If you could, please walk me through that.
06-26-2022 03:15 PM
@Goatster wrote:
Ok, I fixed the default router to 192.168.1.1,
but the switchport mode I'm not familiar with. If you could, please walk me through that.
on each interface in the etherswitch module, you would put the commands I listed.
switchport mode access switchport nonegotiate
I saw the configs in the earlier post. I don't know why they aren't there now.
06-26-2022 03:30 PM
ok, all fast/e 0/2-15 are now switchport mode access/nonegotiate.
Anything else I should address?
06-26-2022 03:45 PM
See if it works now. You DHCP client in VLAN 1 will have to release and renew to get the new gateway.
06-26-2022 04:25 PM
I reloaded the router/switch, reset cable modem, still can't ping outside the router from the switch.
!
! Last configuration change at 22:11:24 UTC Sun Jun 26 2022
! NVRAM config last updated at 22:11:27 UTC Sun Jun 26 2022
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname CISCO_SWITCH
!
boot-start-marker
boot-end-marker
!
!
!
!
no aaa new-model
system mtu routing 1500
authentication mac-move permit
ip subnet-zero
ip dhcp excluded-address 192.168.1.1 192.168.1.10
!
ip dhcp pool SNMPOOL
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.8.8
!
!
!
!
crypto pki trustpoint TP-self-signed-3443242112
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3443242112
revocation-check none
rsakeypair TP-self-signed-3443242112
!
!
crypto pki certificate chain TP-self-signed-3443242112
certificate self-signed 01 nvram:IOS-Self-Sig#3232.cer
!
!
!
spanning-tree mode pvst
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
interface FastEthernet0/2
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/3
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/4
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/5
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/6
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/7
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/8
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/9
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/10
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/11
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/12
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/13
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/14
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/15
switchport mode access
switchport nonegotiate
!
interface FastEthernet0/16
switchport mode access
switchport nonegotiate
!
interface GigabitEthernet0/1
switchport mode access
switchport nonegotiate
!
interface GigabitEthernet0/17
!
interface GigabitEthernet0/18
!
interface Vlan1
ip address 192.168.1.5 255.255.255.0
no ip route-cache
!
ip http server
ip http secure-server
ip sla enable reaction-alerts
!
line con 0
speed 115200
flowcontrol software
line vty 0 4
login
line vty 5 15
login
!
end
06-26-2022 04:33 PM
My posts are still getting deleted, again!
Reset cable modem, router, still no ping to 8.8.8.8 from switch. But router can ping 8.8.8.8
I would post my conf again, but that will probably get deleted, again.
06-26-2022 03:00 PM
On another note, why are my show config posts getting deleted?
06-26-2022 05:41 PM
Hi
This config is wrong:
ip dhcp excluded-address 192.168.1.1 192.168.1.10
!
ip dhcp pool SNMPOOL
network 192.168.1.0 255.255.255.0
default-router 192.168.0.1
dns-server 8.8.8.8
If you are assigning IP address on the 192.168.1.0 network, you gateway also must be on the same network. So, you default-router needs to be 192.168.1.1
If you want those devices connected to the switch to access the internet, you need add NAT on the router.
In the router, On the interface with DHCP you need to add:
ip nat outside
On the interface or vlan to the switch you need to add "ip nat inside"
Then, you need to add an access-list
ip access-list standard 1 permit 192.168.1.0
And the NAT statement
ip nat inside source list 1 interface "dhcp interface" overload
06-26-2022 09:08 PM
Please excuse the mess. The post you replied to was my original post that was flagged for spam. I created another one(this current one). So here we are after all settings are fixed.
Still no ping to 8.8.8.8 from switch-router.
I can still ping 8.8.8.8 from the router.
06-26-2022 09:59 PM
I am a bit confused about what is going on. There are mentions of multiple posts with configs but I see only a single config, which seems to be the config of the switch. Is that correct?
In that config the dhcp scope indicates that the default gateway is 192.168.1.1. I assumed that this would be the address of the interface vlan 1. But this is what the config shows for the vlan interface
ip address 192.168.1.5 255.255.255.0
So where is 192.168.1.1?
And where is the config of the router?
06-27-2022 06:27 AM
Oh, its def a mess in here. For some reason, 5 mins after I post a config, the post disappears. Then I had to repost it again, only for it to disappear again. Either a mod is getting trippy with his delete button, or my config posts are getting flagged for spam.
192.168.1.1 is configured to gigabitethernet1/0 of the switch.
When I get back later today, I will repost a current running copy of the config of both the router and switch.
06-26-2022 05:47 PM
Thank you Leo for merging my posts.
If there is a section on proper posting guidelines, I'd love to see it.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide