11-02-2022 09:34 PM - edited 11-03-2022 03:32 PM
The router at the top is from the ISP and I have no control over things like WAN, NAT, etc.
Network 192.168.1.1/24 is fine, but I cannot get inter-VLAN routing between VLANs 1 and 55.
PC 1 cannot even ping the gateway of the other network at 192.168.55.1.
PC 2 cannot even ping the gateway of the other network at 192.168.1.1.
What am I missing here?
Switch configurations:
ip routing
interface Vlan1
ip address 192.168.1.2 255.255.255.0
interface Vlan55
ip address 192.168.55.1 255.255.255.0
ip route 0.0.0.0 0.0.0.0 192.168.1.1
[diagram updated]
Solved! Go to Solution.
11-03-2022 12:17 AM
You design is wrong
You need to make
L3SW do inter-vlan and in this case you need to change the GW in PC VLAN1 to be IP of SVI of VLAN1 in L3SW
or
Router do inter-vlan and in this case you need to connect SW-R with trunk and config router with subinterface for VLAN1 and VLAN55
11-04-2022 01:55 AM
one last pieces need to add to make ping all work
in ISP router add static route
ip route 192.168.55.0 255.255.255.0 192.168.1.102 <<- this only
11-02-2022 09:54 PM
what are the gateways configured on PCs ?
11-03-2022 03:33 PM
Yes, gateways are configured. Please see updated diagram. Thanks.
11-02-2022 11:16 PM
Is the switch configured for inter-VLAN routing? Please provide the switch "running-config".
HTH
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11-03-2022 03:35 PM - edited 11-03-2022 03:37 PM
ip routing
interface Vlan1
ip address 192.168.1.2 255.255.255.0
interface Vlan55
ip address 192.168.55.1 255.255.255.0
ip route 0.0.0.0 0.0.0.0 192.168.1.1
11-03-2022 03:41 PM
If this is your last config then it perfect,
You need only change defualt gw in pc to be vlan ip.
11-03-2022 12:03 AM
First i would ask some questions :
1. Can PC1 able to ping 192.168.1.2 ( what is the gateway configured on the PC1 ?)
2. Can PC2 able to ping 192.168.55.1 ( what is the gateway configured on the PC2 ?)
also change the below if you lookingg to routing take place :
change below :
no IP default gateway 192.168.1.1
IP route 0.0.0.0 0.0.0.0 192.168.1.1
--
Still not working post below information :
show IP interface brief
show IP arp
show vlan
11-03-2022 03:39 PM
Yes, those PCs can ping their gateways without issue.
PC2 (VLAN 55) can also ping 192.168.1.2 (the address of SVI VLAN 1) but no other address in that network.
Here is the output from the show commands:
Switch#show ip interface brief
Interface IP-Address OK? Method Status Protocol
Vlan1 192.168.1.2 YES manual up up
Vlan55 192.168.55.1 YES manual up up
Switch#show ip arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 192.168.1.1 0 aaaa.bbbb.cccc ARPA Vlan1
Internet 192.168.1.2 - aaaa.bbbb.cccc ARPA Vlan1
Internet 192.168.1.11 0 aaaa.bbbb.cccc ARPA Vlan1
Internet 192.168.55.1 - aaaa.bbbb.cccc ARPA Vlan55
Switch#show vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi0/1, Gi0/2, Gi0/3, Gi0/4, Gi0/5, Gi0/6, Gi0/7
55 VLAN0055 active Gi0/8
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
55 enet 100055 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
11-04-2022 04:39 AM
Looks Cisco messaging system playing here.
as long as all the devices are put the gateway as Switch SVI, you are ok and works as expected.
11-03-2022 12:17 AM
You design is wrong
You need to make
L3SW do inter-vlan and in this case you need to change the GW in PC VLAN1 to be IP of SVI of VLAN1 in L3SW
or
Router do inter-vlan and in this case you need to connect SW-R with trunk and config router with subinterface for VLAN1 and VLAN55
11-03-2022 08:27 PM - edited 11-03-2022 08:28 PM
Thanks so much. You were spot on, once I used the SVI of VLAN1 as gateway I started seeing connectivity.
The final goal was always more than just inter-VLAN routing, of course. The final goal is for all the networks to be able to reach the Internet too. I think given the scenario I have, this is all I can do with this equipment.
The "No" instances in my second diagram are related to my inability to add a route in the ISP router to reach VLAN55. I cannot add the route because that's a home router which does not have that capability.
My final diagram below.
diagram 2
11-04-2022 01:55 AM
one last pieces need to add to make ping all work
in ISP router add static route
ip route 192.168.55.0 255.255.255.0 192.168.1.102 <<- this only
11-04-2022 03:10 PM
Exactly!
I may have to change that router for something more network-person-friendly. The current router they provide works fine but it has hardly any options for configuration by the user. It's a Google Fiber router model AC-1304. Management is done via cloud, through the Google Home app. No hope.
Thanks again so much for all the assistance and follow up!
11-04-2022 01:57 AM
by the way your diagram super super prefect.
11-04-2022 03:05 PM
Thanks!
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