One of the connections is from equinix datacenter, called cloud exchange. To account for this all switches passing the s vlan tagged frames must be configured to support the 0x88a8 ethertype. Qinq allows multiple vlan tags in an ethernet frame. Here is a simple question that might just save might life. On the port between sw2 and sw3cisco, set the mtu to the max, this is to avoid packet drops exceeding the mtu due to qinq tagging. Your servers which accept vlan tagged packets you will typically find to have an ip address per vlan id it accepts, each belonging to the ip subnet associated with the respective vlan. Use the vlan dot1q tag native global configuration command to configure the edge switch so that all packets going out an ieee 802. Pop the outervlan id of 3410 and send it back to the clients. If you recall from part 1 we have had to do a bit of a mcgyver and loop a cable in and out of our switch to bring up the tunnel. Mapping a range of cvlans to an s vlan, and pushing an s vlan tag, configuring traffic pattern 3.
The first step is to configure the trunk between our two backbone switches. In a scenario where etherchannel is implemented between two 802. Qinq tunneling configuration scenario ip with ease. Cisco nexus 5600 series nxos interfaces configuration guide, release 7. Hi, im configuringing my coreswitches 2x hp5800 in the datacenter of my customer. Therefore a station in a vlan can send data to another station in a different vlan just at the network layer a router is needed to connect a port of a vlan to a port of another vlan. The way i have configured this is to set up a loopback interface on each side to emulate the different network, and set. The inner tag is the tag which is closest to the payload portion of the frame. Feature history for qinq tunnels and layer 2 protocol tunneling feature name release feature information qinqvlantunnels 6. The access vlan which is here called tunneltag, must exist in the transit path.
But, instead of using tunneled trafiic of vxlan, im thinking to use qinq 802. Dec 16, 20 we are back to playing with qinq tunnels. If the switch is configured to tag native vlan packets on all ieee 802. Some ports will be trunk switchtoswitch ports configure access ports as untagged and set the pvid port vlan id to the vid of the vlan that the host should belong to. L3 to place the packets into the correct vlan through the routing process.
Via this fiber connection, we are going to connect to mic. In addition to the vid vlan identifier the tag control information tci field contains congrestion and qos related subfields. Qinq configuration being provider and customer edg. Qinq tunneling is useful when customers have overlapping vlan ids, because the customers 802. Qinq tunneling this is the method basically used by service providers to preserve vlanids and to segregate traffic of different customers. Apr 19, 2012 the actual qinq configuration takes place entirely on the transport switches, no modifications are required on the customer equipment. Qinq tunneling and vlan translation allow service providers to create a layer 2 ethernet connection between two customer sites. A lan consists of all devices in the same broadcast domain. Virtual lans vlans pfsense qinq configuration pfsense. Local area network designvirtual lans wikibooks, open. The ultimate goal is to have at least 2 vlan s routing from our downtown colo to our main office. Quick explanation on vlan and qinq on 450 even vlan remarking before understanding virtual local area networks or vlans, one should have a general understanding of the definition of a lan.
When enabling dot1q tunneling, the inner ethertype vlan tag ctag uses the tpid value of 0x8100 while the outer ethertype vlan tag svlan uses the tpid value of 0x88a8. When qinq tunneling is enabled on juniper networks ex series ethernet switches, trunk interfaces are assumed to be part of the service provider network and. This double tagging is called tag stacking, doubleq, or qinq as shown in figure 92. As you will see, the configuration is rather quick and simple. You can configure qinq tunnels on pe1 and pe2 so that offices of the same enterprise enterprise 1 or enterprise. There are no commands to change current configuration of qinq vlan mapping. Pop the outer vlan id of 3410 and send it back to the clients. Few things to remember while configuring qinq tunnel.
But what if site 1 is connected to site 2 and they use different ip schemes such as 10. When you configure a vlan qinq once time,that vlan works as qinq mode. Dei drop eligible indicator and pcppriority code point as shown in. In cisco switched internetworks, lewis applies his trademark thoroughness and clarity to switched systems, explaining how cisco products work as part of switched virtual local area networks vlans and asynchronous transfer mode atm schemes in general. Example for configuring a qinq tunnel huawei technical support. That filter willl match any frame that has two vlan. The ultimate goal is to have at least 2 vlans routing from our downtown colo to our main office. Cisco nexus 9000 series nxos interfaces configuration guide. Push a vlan id 3410 and send it to the remote end which is another vendor device. In the vlan id drop down menu, select the vlan id you want to edit. Business customers of service providers often have specific requirements for vlan ids and the number of vlans to be supported. Switches sendingreceiving qinq frames must increase their system mtu to 1504 for vlan tunneling work. Configuring qinq tunneling techlibrary juniper networks. Qinq tunneling adds a service vlan tag before the customers 802.
Jun 11, 2011 qinq tunneling this is the method basically used by service providers to preserve vlan ids and to segregate traffic of different customers. It worked well in that post, but now its time to open up the tunnel a bit more and allow more vlans through it. Ive looked through the cisco 3750 qinq configuration guide and it seems really basic but obviously something is off here. Figure 14 shows a list of the vlan ethertypes from ieee 802. Aug 20, 20 from part one, we know that the purpose of a qinq tunnel is to extend a vlan across the wan or network. There are ways to accomplish this, like using gre tunnels, however, the easiest thing would be to either use a bridged vpn mutiple ones for each vlan subnet, or possibly configuring the virtual interface for the tunnel to tag traffic or just use a routed vpn and use vlans at each site, then let the end points route to the appropriate devices. Retaining s vlan and c vlan tags, configuring traffic pattern 4. Configuring qinq tunneling and vlan qinq tunneling and.
Feb 17, 2016 vlans usually dont extend past the wan however there are new alternatives that exist today that allow vlan traffic to pass through a wan. When qinq vlan mapping is configured under interface, like. Qinq frames are convenient means of constructing layer 2 tunnels, or applying quality of service qos policies, etc. Qinq allows multiple vlan tags to be inserted into a single frame qinq can be used to tunnel vlans in a vlan. We should have similar options as for trunk allowed vlan list addremove. The actual qinq configuration takes place entirely on the transport switches, no modifications are required on the customer equipment. Xxx, where the two xxxs are the same, is a reasonable filter, as it doesnt mean vlan. By using a different vlan tag for each customer we can separate the traffic from.
Identify qinq vlan in vlan without knowing 2nd vlan. The ohio state university raj jain 8 layer3 vlans q also known as virtual subnet q vlan membership implied by maclayer protocol type field and subnet field 123. When enabling dot1q tunneling, the inner ethertype vlan tag ctag uses the tpid value of 0x8100 while the outer ethertype vlan tag s vlan uses the tpid value of 0x88a8. Hi, in our environment, networking devices is managed by other authority. Jun 06, 2011 the qinq technology is called vlan dot1q tunnel, 802. It was originally designed to allow service providers to create a layer 2 ethernet connection between two customer sites that may wish to reuse the same vlan.
In the vlan id field, type the id of the vlan you wish to create and click add. Providers can segregate different customers vlan traffic on a link for example, if the customers use overlapping vlan ids or bundle different customer vlans into a single service vlan. Qinq vlan huawei olt configure example gpon solution. Quick explanation on vlan and qinq on 450 even vlan remarking. The external vlans will not be known to your switches. He also provides plenty of information about the theory and design of switched connections. Everytime i pull up ciscos qinq examples the sp always has the dot1q tunnels setup on the sp edge switches facing towards the customers equipment. With the double layers of tags, the vlan quantity is increased to 802. With that being said i did change the setting on the interface at the dc so that it would be an 802.
Cisco nexus 3000 series nxos interfaces configuration guide, release 7. On the coreswitches there will be connected some servers, firewalls and connections. A customer may have his own set of vlan tags that needs to be transported transparently through a service provider network, so this is, in effect, an access port that doesnt care whether the frames received contain vlantags or not. Vlans usually dont extend past the wan however there are new alternatives that exist today that allow vlan traffic to pass through a wan. A configuration example is provided in the cat6500 qinq configuration. Assigning the vlan port id to 4095 instructs the vswitch to forward a vlan tagged packet, it is not used an a vlan data plane but more like a backbone. If we take three ex series switches and want to configure qinq with layer2 tunneling, assuming the svlan is configured over all three switches, does the qinq configuration need to be configured on every switch or just the end switches from a theory point of view i am presuming this is just the end. Aug 26, 2015 dot1qtunneling is a method of transporting vlanencapsulated frames in vlanencapsulated frames qinq. The technique is also known as provider bridging, stacked vlans, or simply qinq or qinq. Identify qinq vlan in vlan without knowing 2nd vlan ask.
The qinq technology is called vlan dot1q tunnel, 802. However, i could only see one inner tag that is vlan 20 and vlan 10. Requirements, overview and topology, configuring traffic pattern 1. By default, a standard trunk interface understands the 0x8100 format and will not understand how to process a vlan tag with the tpid value of 0x88a8. Cisco qinq more than one provider vlan svlan on dot1q.
On the ingress and egress interfaces on the switches. What im trying to figure out is if our procurve 4208vl can handle qinq or if i need to put a different switchrouter in front of it. Q unifi switch and qinq hey all, currently running into an odd issue, 48 port poe unifi switches where i am trying to connect it into an mplsmetro wan connection where my isp does qinq so that after it leaves their network its basically an l2 trunkcable. Example qinq tunneling configuration juniper and cisco. One vlan is for internal traffic while the other is for public services web servers, ftp. Quick explanation on vlan and qinq on 450 even vlan.
Cisco nexus 7000 series nxos interfaces configuration guide configuring q inq vlan tunnels. The expanded vlan space allows the service provider to provide certain services, such as internet access on specific vlans for specific customers, and yet still allows the. Chapter 9 configuring qinq vlan tunnels information about qinq tunnels inner vlan id is the vlan of the incoming traffic as assigned by the customer. Popping an s vlan tag, configuring traffic pattern 2. It enables service providers to use a single vlan to support different customers who have a single or multiple vlans need to connect across providers network. Dot1qtunneling is a method of transporting vlanencapsulated frames in vlanencapsulated frames qinq. Qinq allows multiple vlan tags to be inserted into a single frame. The traffic flow is working as expected, meaning if we take flow from ce1 to ce2. Qinq frames are convenient means of constructing layer 2 tunnels. Well be using vlan 101 for customera, and 201 for customerb.
Sw1 switchport switchport mode access switchport access vlan 200 this is referred to as customer tag vlan. To make sure that i am actually correctly double tagging, i removed vlan 200 from the allowed vlan list on the trunk between sw4 and sw2, and i ran another ping, all timed out. By using a different vlan tag for each customer we can separate the. Qinq can for supported devices apply to ctag stacking on ctag ethernet type 0x8100. Virtual lans vlan allow to share a single physical infrastructure same devices, same cabling among multiple logical lans. Welcome to cisco network learning youtube channel subscribe this channel to get notification of new video contact me.