Showing results for 
Search instead for 
Did you mean: 

EXOS configuration for VLAN to connect to Internet

EXOS configuration for VLAN to connect to Internet

New Contributor
Newbie to networking and Extreme Networks switch and trying to set up a simple config at home. I picked up a Summit 450e defaulted to factory config with a 15.6b image. I have created 4 VLANs - data,voice, guest and inet-gw. Port 1 is data, Port 2 is voice, Port 3 is guest, Port 12 is inet-gw. PC attached to each of ports 1, 2 and 3 and a verizon router attached to port 12. For purposes of simulating using GNS-3 I used the NAT-1 appliance instead of the actual Verizon router. I am able to ping each PC from each of the other PCs connected to the switch. I am able to ping and other publicly accessible internet sites from the inet-gw VLAN on the switch using the console (hence showing that the NAT-1 connection to the switch works). The problem is that i cannot reach the internet from any of the PCs connected to the switch (i.e. from the data, voice, or guest VLANs). I followed Drew C's post that showed a very similar set-up but he did not have any actual configuration commands so obviously I am missing something in my config. Have been messing with it for the last two days but no luck so throwing myself at your mercy now...config schematic below...

* Summit-PC.11 # show vlan ----------------------------------------------------------------------------------------------- Name VID Protocol Addr Flags Proto Ports Virtual Active router /Total ----------------------------------------------------------------------------------------------- data 10 /24 -f--------------------------- ANY 1 /1 VR-Default Default 1 ------------------------------------------------- ANY 0 /0 VR-Default guest 30 /24 -f--------------------------- ANY 1 /1 VR-Default inet-gw 100 -f--------------------------- ANY 1 /1 VR-Default Mgmt 4095 ------------------------------------------------- ANY 1 /1 VR-Mgmt voice 20 /24 -f--------------------------- ANY 1 /1 VR-Default -----------------------------------------------------------------------------------------------Ori Destination Gateway Mtr Flags VLAN Duration
#bo Default Route 1 UG-D---um--f- inet-gw 0d:0h:34m:7s
#d 1 U------um--f- data 0d:0h:34m:18s
#d 1 U------um--f- voice 0d:0h:34m:18s
#d 1 U------um--f- guest 0d:0h:34m:18s
#d 1 U------um--f- inet-gw 0d:0h:34m:8s

* Summit-PC.17 # sh dhcp-client state
Client VLAN Protocol Server Current State
--------------- -------- --------------- ---------------------------------------
data None
Default None
guest None
inet-gw DHCP DHCP state; Bound
Mgmt None
voice None

A total of 6 vlan(s) where displayed.



Extreme Employee
I agree with Erik. Lets use a device we have more control over.

Contributor II
You could try one of the free software routers available for GNS3 instead of the NAT-1 device. For example one of the LEDE, OpenWRT, BSDRP or BIRD router appliances. There you can configure static routes towards the client networks.

New Contributor
Patrick and others,

Thanks for the reply. IP forwarding is enabled on the Vlans. I can ping on port 12 from the other PCs but not - it cannot see that for some reason. The NAT1 device in GNS-3 does not allow for any configuration. Attached below is the config and the message I get back when I ping from VPCS1 (PC 1)...

VPCS> sh ip

MAC : 00:50:79:66:68:02
LPORT : 10012
MTU: : 1500

VPCS> ping
84 bytes from icmp_seq=1 ttl=64 time=3.267 ms
84 bytes from icmp_seq=2 ttl=64 time=2.130 ms
84 bytes from icmp_seq=3 ttl=64 time=5.607 ms
84 bytes from icmp_seq=4 ttl=64 time=1.596 ms
84 bytes from icmp_seq=5 ttl=64 time=1.368 ms

VPCS> ping icmp_seq=1 timeout icmp_seq=2 timeout icmp_seq=3 timeout icmp_seq=4 timeout icmp_seq=5 timeout

Config File:
configure vlan default delete ports all
configure vr VR-Default delete ports 1-12
configure vr VR-Default add ports 1-12
configure vlan default delete ports 1-12
create vlan "data"
configure vlan data tag 10
create vlan "guest"
configure vlan guest tag 30
create vlan "inet-gw"
configure vlan inet-gw tag 100
create vlan "voice"
configure vlan voice tag 20
configure vlan data add ports 1 untagged
configure vlan guest add ports 3 untagged
configure vlan inet-gw add ports 12 untagged
configure vlan data ipaddress
enable ipforwarding vlan data
configure vlan voice ipaddress
enable ipforwarding vlan voice
configure vlan guest ipaddress
enable ipforwarding vlan guest

# Module fdb configuration.

# Module rtmgr configuration.

# Module mcmgr configuration.

# Module aaa configuration.


# Module msdp configuration.

# Module netLogin configuration.

# Module netTools configuration.
configure dns-client add name-server vr VR-Default
enable dhcp vlan inet-gw

# Module ntp configuration.

# Module ospf configuration.


Any other thoughts?


The reason why the ping is successful when pinging from switch may be the source address of that ping request is switch's local which NAT-1 device also knows this network ( as its direct interface.
I think the ping won't be successful when you ping from switch with different source address for example, "ping from".
As long as you want to have separated network for each data, voice and guest, appropriate routing is required.