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Dot1q terminate function

Dot1q terminate function

Created: Oct 30, 2019 14:57:27Latest reply: Oct 30, 2019 14:59:06 395 1 0 0 0
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Hello there,

A dot1q VLAN tag termination sub-interface is configured on a router. If a packet with two VLAN tags is received, will the sub-interface process the packet?

For example:

PE2---PE1---CE1---client PC

CE1 is a switch. An OSPF peer relationship is established between PE2 and PE1. The interface connecting PE1 to CE1 is configured to work in dot1q vlan termination mode. If a double-tagged VLAN (QinQ packet) is received, can it be terminated and sent to PE2?

Thank you in advance.

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Popeye_Wang
Admin Created Oct 30, 2019 14:59:06

Hi Steelbule,
After receiving the packet, the router removes the outer tag of the packet. It is still a VLAN packet and should be discarded.
Only the sub-interface for QinQ VLAN tag termination can be configured to terminate double-tagged packets.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100007335&id=dc_cfg_qinq_0091&text=null&lang=en
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Popeye_Wang
Popeye_Wang Admin Created Oct 30, 2019 14:59:06

Hi Steelbule,
After receiving the packet, the router removes the outer tag of the packet. It is still a VLAN packet and should be discarded.
Only the sub-interface for QinQ VLAN tag termination can be configured to terminate double-tagged packets.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100007335&id=dc_cfg_qinq_0091&text=null&lang=en
View more
  • x
  • convention：
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