If you are using the management interface (out-of-band) for management traffic, you will have a connection/ cable going out of the management port of the S4112 switch to the router that is the default gateway for mgmt traffic, in this example 192.168.100.1 ip will be located on the router.
! Configure the management interface
configure terminal
interface mgmt1/1/1
no shutdown
ip address 192.168.100.10/24
exit
! Set the default gateway for management traffic
management route 0.0.0.0/0 192.168.100.1
! Save the configuration
exit
write memory
1.2 (in-band) If you want to manage the switch in-band, then you will have a vlan with an ip address, and use that IP when you SSH to the switch
2. Data traffic.
If you have an L2 switch, you do not need to configure a default gateway on it for data traffic. You will have to configure the Default Gateway on the hosts/servers, to use the Aruba as Default Gateway. The IP address will be physically located on the Aruba, and it has to be in the same subnet as what is configured on the host. You should be able to see the mac address of the host and mac address of Aruba port learned in the same vlan on the switch. A packet sent from the host will directly go layer2 to Aruba in the same vlan/subnet.
so we have to configure a static route on a layer 2 device to point towards the layer 3 gateway/core switch? how is that supposed to work? That doesn't make any type of normal networking sense. I do know that as long as the gateway and mgmt ip are in the same subnet, communication will work. However, the device will not be accessible directly from another subnet with a default gateway set. If our snmp, ntp, AAA, and monitoring servers are in another broadcast domain, they will not be able to reach the Dell switch.
What does that even look like?
for example, we would have the Dell s4128 mgmt 1/1/1 ip address 172.18.0.10/24 and the gateway address would be 172.18.0.1
So how does that work, I am puzzling over a pair of S4112f-on switches and how the L2 routes forward onto an Aruba 2930m - I cannot get them to route out to the internet - the 0.0.0.0/0 does not show in show IP routes and why would you do that, the 0.0.0.0/0 should be on the Aruba and it is.
DELL-Charles R
Moderator
•
4.7K Posts
0
August 27th, 2025 17:48
Hello,
Management traffic
1.1 (out-of-band OOB)
If you are using the management interface (out-of-band) for management traffic, you will have a connection/ cable going out of the management port of the S4112 switch to the router that is the default gateway for mgmt traffic, in this example 192.168.100.1 ip will be located on the router.
! Configure the management interface
configure terminal
interface mgmt1/1/1
no shutdown
ip address 192.168.100.10/24
exit
! Set the default gateway for management traffic
management route 0.0.0.0/0 192.168.100.1
! Save the configuration
exit
write memory
1.2 (in-band) If you want to manage the switch in-band, then you will have a vlan with an ip address, and use that IP when you SSH to the switch
2. Data traffic.
If you have an L2 switch, you do not need to configure a default gateway on it for data traffic. You will have to configure the Default Gateway on the hosts/servers, to use the Aruba as Default Gateway. The IP address will be physically located on the Aruba, and it has to be in the same subnet as what is configured on the host. You should be able to see the mac address of the host and mac address of Aruba port learned in the same vlan on the switch. A packet sent from the host will directly go layer2 to Aruba in the same vlan/subnet.
DELL-Josh Cr
Moderator
•
9.5K Posts
0
May 15th, 2019 09:00
Hi,
What OS version are you using?
punisher911
1 Rookie
•
11 Posts
0
May 15th, 2019 11:00
I'm using 10.4 and have the same question. I can see no way of configuring a default gateway.
DELL-Josh Cr
Moderator
•
9.5K Posts
0
May 15th, 2019 12:00
Page 503, https://downloads.dell.com/manuals/common/os10_enterprise-ug_en-us.pdf you can configure static routes and some are automatically configured for direct attach VLANs.
punisher911
1 Rookie
•
11 Posts
0
May 16th, 2019 04:00
so we have to configure a static route on a layer 2 device to point towards the layer 3 gateway/core switch? how is that supposed to work? That doesn't make any type of normal networking sense. I do know that as long as the gateway and mgmt ip are in the same subnet, communication will work. However, the device will not be accessible directly from another subnet with a default gateway set. If our snmp, ntp, AAA, and monitoring servers are in another broadcast domain, they will not be able to reach the Dell switch.
What does that even look like?
for example, we would have the Dell s4128 mgmt 1/1/1 ip address 172.18.0.10/24 and the gateway address would be 172.18.0.1
DELL-Josh Cr
Moderator
•
9.5K Posts
0
May 16th, 2019 09:00
Can you private message the service tag?
punisher911
1 Rookie
•
11 Posts
0
May 17th, 2019 11:00
Got the default gateway issue straightened out. Took a bit to figure it out though.
jr57445
1 Message
0
August 21st, 2019 12:00
Can you tell me where you found the documentation for this?
WHATISTHECOMMAND
2 Posts
0
January 20th, 2023 05:00
WELL THANKS FOR NOT POSTING THE SOLUTION!
SilverLeafTech
1 Rookie
•
1 Message
0
October 23rd, 2023 19:02
ip route 0.0.0.0/0 x.x.x.x
Jaxon62
1 Rookie
•
78 Posts
0
August 27th, 2025 15:55
Hi,
So how does that work, I am puzzling over a pair of S4112f-on switches and how the L2 routes forward onto an Aruba 2930m - I cannot get them to route out to the internet - the 0.0.0.0/0 does not show in show IP routes and why would you do that, the 0.0.0.0/0 should be on the Aruba and it is.