01-13-2020 10:22 PM
Hello,
I have configured an ISR and currently have wan connectivity. I can ping 8.8.8.8 and cisco.com directly from the router. I have several vlans that can pull dhcp addresses. So I believe I should be good to go as far as setting it up for routing and internet connectivity. I understand there are several options.
NASA(config)#router ? bgp Border Gateway Protocol (BGP) eigrp Enhanced Interior Gateway Routing Protocol (EIGRP) isis ISO IS-IS iso-igrp IGRP for OSI networks lisp Locator/ID Separation Protocol mobile Mobile routes odr On Demand stub Routes ospf Open Shortest Path First (OSPF) ospfv3 OSPFv3 rip Routing Information Protocol (RIP)
In this tutorial https://www.cisco.com/c/en/us/td/docs/routers/access/800M/software/800MSCG/routconf.html#24575
I can see rip is my primary option as far as the tutorial goes. Is this the best way to set this up? Is there anything else I need to know about?
Thank you,
Nate
Solved! Go to Solution.
01-14-2020 12:23 AM
Hi,
As I am looking at your router routing table output it is looking that there are no VLANs and all VLANs are configured on the Switch only. So you have to add some more configuration as:
1. Add route (Static) route on the router toward to Switch SVI for Internal VLANs on the switch.
2. Add VLANs subnet in the NATing.
I think it is better to share the Router configuration along with the network diagram so we can suggest you with proper commands.
01-13-2020 10:35 PM
Hi,
The choice of Routing protocol depends on the scenario. You want to configure Router between different locations or devices ?
Where are the VLANs terminated ?
01-13-2020 10:38 PM
Scenarios with single site setup, static and default routes will be good enough to provide the Internet reachability to the VLANS you have.
01-13-2020 10:54 PM
My vlans are trunked to a switch locally. Nothing complex at the moment. Just to the internet.
01-13-2020 11:02 PM
How about the VLAN interfaces/SVI's? Is it configured on the switch or on the Router ?
01-13-2020 11:34 PM - edited 01-13-2020 11:58 PM
The vlans are configured on both?
I'm currently stuck configuring routing.
NASA#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 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 o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP a - application route + - replicated route, % - next hop override, p - overrides from PfR Gateway of last resort is 172.16.1.254 to network 0.0.0.0 S* 0.0.0.0/0 [254/0] via 172.16.1.254 172.16.0.0/16 is variably subnetted, 3 subnets, 2 masks C 172.16.1.0/24 is directly connected, GigabitEthernet0/0 L 172.16.1.63/32 is directly connected, GigabitEthernet0/0 S 172.16.1.254/32 [254/0] via 172.16.1.254, GigabitEthernet0/0
My isp isn't giving me that R I am looking for? Even though I am trunking everything to my 2911 do I still need to manually configure routes on my switch?
01-14-2020 12:23 AM
Hi,
As I am looking at your router routing table output it is looking that there are no VLANs and all VLANs are configured on the Switch only. So you have to add some more configuration as:
1. Add route (Static) route on the router toward to Switch SVI for Internal VLANs on the switch.
2. Add VLANs subnet in the NATing.
I think it is better to share the Router configuration along with the network diagram so we can suggest you with proper commands.
01-14-2020 07:29 AM - edited 01-14-2020 11:28 AM
Router:
NASA#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 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 o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP a - application route + - replicated route, % - next hop override, p - overrides from PfR Gateway of last resort is 172.16.1.254 to network 0.0.0.0 S* 0.0.0.0/0 [254/0] via 172.16.1.254 172.16.0.0/16 is variably subnetted, 2 subnets, 2 masks C 172.16.1.0/24 is directly connected, GigabitEthernet0/0 L 172.16.1.63/32 is directly connected, GigabitEthernet0/0 192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.1.0/24 is directly connected, Loopback0 L 192.168.1.1/32 is directly connected, Loopback0 192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.2.0/24 is directly connected, GigabitEthernet0/1.1 L 192.168.2.1/32 is directly connected, GigabitEthernet0/1.1 192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.3.0/24 is directly connected, GigabitEthernet0/1.3 L 192.168.3.1/32 is directly connected, GigabitEthernet0/1.3
! router eigrp 109 network 192.168.3.0 ! router rip version 2 network 192.168.3.0 no auto-summary !
Switch:
JPL#show ip route Codes: 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 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 o - ODR, P - periodic downloaded static route Gateway of last resort is not set C 192.168.2.0/24 is directly connected, Vlan1
https://community.cisco.com/t5/routing/basic-configuration-for-cisco-isr-4331/td-p/2744906
The part about " ip route 0.0.0.0 0.0.0.0 dhcp" where would I assign that?
https://community.cisco.com/t5/routing/cisco-4331-router-no-internet-access/td-p/3356391
I also see "ip nat inside" are these things I HAVE to add to the vlans?
From the 2911 I can ping google.com. From the router I can ping 192.168.2.2(the switch).
I can directly connect to the switch and get a dhcp to a switchport vlan from a dhcp server over 802.1Q on the router. From my host I can ping 192.168.3.1 but I cannot figure out how to route to the internet. If I am connected over trunked vlans I dont need to adjust routing on the switch do i? Its the router that does the routing to the internet?
01-14-2020 11:31 AM
! interface GigabitEthernet0/1.3 encapsulation dot1Q 3 ip address 192.168.3.1 255.255.255.0 ip nat inside ip virtual-reassembly in zone-member security INSIDE no cdp enable !
Is this what you mean by add vlan subnet?
01-14-2020 06:59 PM
https://community.cisco.com/t5/routing/cannot-route-to-internet-from-switch/m-p/4011632#M327783
I'm stubborn. Defeated by the day.
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