Inter-Vlan communication upon a BAS interface

chenhui · Created Jul 19, 2019 04:03:43

Posted by mrod at 2019-07-18 16:44 Hi Chenhui,Yes, that's it, he wants a layer2 connection. The Olt is connected using a Gigabit inte ...

I'll check it later, and I asked the Access engineers, they said that it's possible to build a layer 2 connection on the OLT, I'm not sure if this is helpful in this scenario.

wissal · Created Jul 17, 2019 19:27:53

Hi,

Huawei provides a variety of technologies to implement inter-VLAN communication. The following two technologies are commonly used:

VLANIF interface
A VLANIF interface is a Layer 3 logical interface that can be used to implement inter-VLAN Layer 3 connectivity.
It is simple to configure a VLANIF interface, so VLANIF interfaces are the most commonly used for inter-VLAN communication. However, a VLANIF interface needs to be configured for each VLAN and each VLANIF interface requires an IP address. As a result, this technology wastes IP addresses.
Dot1q termination sub-interface
A sub-interface is also a Layer 3 logical interface that can be used to implement inter-VLAN Layer 3 connectivity.
A Dot1q termination sub-interface applies to scenarios where a Layer 3 Ethernet interface connects to multiple VLANs. In such a scenario, data flows from different VLANs preempt bandwidth of the primary Ethernet interface; therefore, the primary Ethernet interface may become a bottleneck when the network is busy.
For details about the Dot1q termination sub-interface, see VLAN Termination Configuration.

VLANIF interfaces require that users in VLANs be located on different network segments. (When hosts are located on the same network segment, a host encapsulates the destination host' MAC address in packets. The device determines that packets should be forwarded at Layer 2. Layer 2 switching is performed only in the same VLAN, and broadcast packets cannot reach different VLANs. In this case, the device cannot obtain destination hosts' MAC addresses and therefore cannot forward packets to the destination host.) On a network, VLAN aggregation can allow hosts on the same network segment in different VLANs to communicate.

VLAN aggregation, also known as super-VLAN, associates a super-VLAN with multiple sub-VLANs. The sub-VLANs share the IP address of the super-VLAN as the gateway IP address to implement Layer 3 connectivity with an external network. Proxy ARP can be enabled between sub-VLANs to implement Layer 3 connectivity between sub-VLANs. VLAN aggregation conserves IP addresses in inter-VLAN Layer 3 communication.

VLAN aggregation applies to scenarios where multiple VLANs share a gateway. For details about VLAN aggregation, see VLAN Aggregation Configuration.

For more details:

https://support.huawei.com/enterprise/my/doc/EDOC1000178168/90c96684/inter-vlan-communication

Thanks

chenhui · Created Jul 18, 2019 01:48:37

@mrod Hi,
Are you mind to provide a simple topology?
I'm not quite clear about your description.
Interconnect two stores using vlans, does this mean the customer want to built a layer 2 connection between the two stores?
How does the OLT connect to the NE20E?

mrod · Created Jul 18, 2019 16:44:18

Posted by chenhui at 2019-07-18 01:48 @mrod Hi,Are you mind to provide a simple topology?I'm not quite clear about your description.Interc ...

Hi Chenhui,

Yes, that's it, he wants a layer2 connection. The Olt is connected using a Gigabit interface where I have some vlans to provide PPPoE access to customers.

chenhui · Created Jul 19, 2019 04:03:43

Posted by mrod at 2019-07-18 16:44 Hi Chenhui,Yes, that's it, he wants a layer2 connection. The Olt is connected using a Gigabit inte ...

I'll check it later, and I asked the Access engineers, they said that it's possible to build a layer 2 connection on the OLT, I'm not sure if this is helpful in this scenario.

Inter-Vlan communication upon a BAS interface

Recommended answer

Third Party’s Trade Secret

My Followers

Enterprise

Consumer

Corporate

Carriers

Inter-Vlan communication upon a BAS interface

Recommended answer

Third Party’s Trade Secret

My Followers