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How to keep VLANIF always UP?

Created: Jan 16, 2019 05:50:43Latest reply: Jan 16, 2019 09:50:21 1248 4 1 0
  Rewarded HiCoins: 0 (problem resolved)

Hello!


I'm configuring my Huawei s6720 switch. Nothing difficult, just added VLAN 100 and VLANIF100 for traffic aggregation. And now I faced the problem. If the physical interface goes down, VLANIF goes down as well. How can I change that behaviour?

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chenhui
Admin Created Jan 16, 2019 09:50:21 Helpful(0) Helpful(0)

@VolanD hi there, I didn't find the command to force vlanif keeps up state when none interface is up, but you can achieve this by indirect way,
by the way, you can force the vlanif up for as most as 20 seconds by configure damping time .

first, configure a new vlan which will NOT be used in the furture,
then,configure a new eth-trunk, and configure this eth-trunk port as layer 2 trunk interface, and allow ONLY the new vlan which configured previous and the vlan which the vlanif port is forced up passing.
third, in the uplink eth-trunk port, which is a layer2 trunk port, allows the new vlan passing,
then the vlanif will be forced up.
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WheatGrass
WheatGrass Created Jan 16, 2019 06:09:52 Helpful(2) Helpful(2)

At least 1 physical interface need to be UP.
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RahmanAhmedy
RahmanAhmedy Created Jan 16, 2019 06:36:26 Helpful(0) Helpful(0)

As per mentioned by WheatGrass, you need at least 1 physical interface that is UP and also allow the VLAN100 to be pass through that physical interface. For example:

Int g0/0/1
port link-type access
port default vlan 100

After you configured, the int VLANIF100 will change the state from DOWN to UP.
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VolanD
VolanD Created Jan 16, 2019 07:49:52 Helpful(0) Helpful(0)

Thank you for your answers, but I knew that. I need to keep VLANIF in up state when the user turns his PC off. Like "no autostate" on Cisco switch.
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chenhui
chenhui Admin Created Jan 16, 2019 09:50:21 Helpful(0) Helpful(0)

@VolanD hi there, I didn't find the command to force vlanif keeps up state when none interface is up, but you can achieve this by indirect way,
by the way, you can force the vlanif up for as most as 20 seconds by configure damping time .

first, configure a new vlan which will NOT be used in the furture,
then,configure a new eth-trunk, and configure this eth-trunk port as layer 2 trunk interface, and allow ONLY the new vlan which configured previous and the vlan which the vlanif port is forced up passing.
third, in the uplink eth-trunk port, which is a layer2 trunk port, allows the new vlan passing,
then the vlanif will be forced up.
View more
  • x
  • convention:

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