Configuring Layer-3 Routed VLAN Interfaces on an EX Series Switch

hello my name is Jeff Flaherty I'm a member of the education services lab support team today I'm going to demonstrate how to enable routed VLAN interfaces or RV eyes on an exe Rhys which so what is an RV eye a routed VLAN interface or RV eye is a logical layer 3 VLAN interface used to route traffic between VLANs it typically functions as the gateway IP address for end-user devices on the subnet associated with the corresponding video is must be associated with a VLAN and must have an operational layer 2 interface in that VLAN to be operational themselves these interfaces are typically implemented in either the aggregation layer or the access layer depending on the network design and implementation all e^x series switches support rbis as well as other layer 3 routing operations to configure RB i--'s we first define the VLAN statement at the Edit interfaces hierarchy we set the unit number and IP address next define the VLAN and associate the layer 3 interface with their respective VLANs at the edit VLANs hierarchy next configure the appropriate interfaces to be Ethernet switched and add them to the correct VLAN at the Edit interfaces hierarchy alternatively you can add the interface to the appropriate VLAN at the edit VLANs hierarchy either way is acceptable finally we can verify there are interfaces associated with the proper VLANs and that they are operational using the show commands let's run through example in the diagram shown here we have two hosts hosts a with IP address one seven two twenty three dot 11.1 hundred and host B with IP address one seven two twenty-three twelve dot one hundred the simple goal here is to get these two devices which are different subnets at different VLANs to communicate via ping okay let's get started first we define the layer three VLAN interfaces we'll use unit 11 and unit 12 in our example and set the IP addresses according to the diagram next we'll define the VLANs and associate them with their respective layer 3 interfaces next we'll set the appropriate interfaces as Ethernet switched and add them to the correct VLAN in our case Gigabit Ethernet 0:06 will be in V line 11 and Gigabit Ethernet 0 0 16 will be in VLAN 12 and let's have a look now we can commit our changes and verify I'll use the show vlans command and here we can see that gigabit ethernet 0:06 is associated with V 911 and Gigabit Ethernet 0 0 16 is associated with VLAN 12 they're both showing up up as I'll show here and therefore both the our vis will be showing is operational as well to demonstrate the need for the layer 2 interfaces to be up up in order for the VLAN interface to be operational I'll disable Gigabit Ethernet 0 0 6 and show you the status of the VLAN 11 logical interfaces after that's been done commit those changes and let's have a look at the logical interface VLAN 11 you can see that while the admin status is up the link status is down making the interface in operational let's roll back and test our connectivity between hosts as shown on the diagram recall that we have two hosts hosts a and host B each on different subnets and in different VLANs the goal here is to simply get these two devices to communicate via ping first let's ensure that the hosts have the correct default gateway set and we can ping that gateway here we can see we have one seven two twenty three got 11.1 set as a default route gateway I will ping that here looks good I will do the same thing on host b-17 223 12.1 and let's ping that very good with the gateways verified let's now ping the opposite host to ensure our RBIs are doing their job from host a I'll ping host B and the response from twelve dot one hundred is good and from host B to host a and the response from 11.1 hundred looks good as well with the paints between the end device is successful we have verified that the configuration of the our VI on the switch is good this concludes our simple demonstration of how to enable routed V line interfaces on e x switches I hope you found this information useful do note that this is just the first step in enabling layer 3 services on e x switches and many additional features can be configured as well such as routing protocols and DHCP services additional information about these features can be found in the complete software guide for Juno so s4e x series switches and elsewhere on our website thanks for your time today juniper learning bites you more @ www.viki rican sise lessons on specific subjects relevant for all skill levels taught by training experts and available whenever and wherever you're ready to learn juniper learning bites expand your knowledge bit by bit

Channel: JuniperNetworks

Views: 50,077

Rating: 4.8993711 out of 5

Keywords: Juniper, Juniper Networks, CLI, Junos, Learning Bytes, ex series switches, ex switch, ex, vlan, layer 3

Id: VB-hJkct1ow

Length: 10min 51sec (651 seconds)

Published: Fri May 10 2013