6WIND - Virtual Service Router
Version 3.11.0.ga
  • 1. Overview
  • 2. Getting Started
  • 3. User Guide
    • 3.1. User Guide - CLI / NETCONF
      • 3.1.1. Preface
      • 3.1.2. Key features
      • 3.1.3. Basics
      • 3.1.4. System
      • 3.1.5. Network interfaces
        • Interface types
        • Interface management
      • 3.1.6. IP Networking
      • 3.1.7. Routing
      • 3.1.8. QoS
      • 3.1.9. Security
      • 3.1.10. High Availability
      • 3.1.11. Monitoring
      • 3.1.12. Services
      • 3.1.13. Maximum Capacity Specifications
      • 3.1.14. Diagnostic
      • 3.1.15. Automation
    • 3.2. Command Reference
6WIND - Virtual Service Router
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  • 3. User Guide »
  • 3.1. User Guide - CLI / NETCONF »
  • 3.1.5. Network interfaces »
  • Interface management »
  • Physical Link Parameters

Physical Link Parameters¶

Unlike the MAC and MTU parameters which are applicable to all Ethernet interfaces, the following settings are only applicable to physical interfaces (i.e., interfaces backed by a physical PCI port).

See also

The command reference for details.

Auto-Negotiation¶

Even though it is often left enabled, auto-negotiation may be changed to cope with certain physical connections.

vsr running config# / vrf main interface physical eth1 ethernet auto-negotiate false

Duplex Mode¶

By default, this setting is negotiated automatically with the connected endpoint. When auto-negotiation is set to false, you must specify the duplex mode of the connection.

vsr running config# / vrf main interface physical eth1 ethernet duplex-mode full

Port Speed¶

By default, this setting is negotiated automatically with the connected endpoint. When auto-negotiation is set to false, you must specify the port speed.

vsr running config# / vrf main interface physical eth1 ethernet port-speed 10gb

Flow Control¶

Pause frames are used by the NIC to ask a peer to slow down. It can be configured to automatically send pause frames as soon as the receive buffer is getting low, and to accept or not pause frames from other devices.

The default settings vary with hardware and device drivers. You may force them with the following commands:

vsr running config# / vrf main interface physical eth1 ethernet flow-control-tx false
vsr running config# / vrf main interface physical eth1 ethernet flow-control-rx false

Configuring VLAN extended filter¶

Some NICs do not receive VLAN packets, even with the promiscuous mode enabled, due to the VLAN filtering. This can result in packets coming from unknown VLAN IDs not being accepted.

To address this limitation, the following command enables managing a list of VLANs that must be ignored by the VLAN filtering. In this example, the VLAN IDs 50, 5 to 10, and 400 to 410 are authorized on the physical interface eth1.

vsr running config# / vrf main interface physical eth1 vlan-extended-filter allow-vlan-id 5-10
vsr running config# / vrf main interface physical eth1 vlan-extended-filter allow-vlan-id 50
vsr running config# / vrf main interface physical eth1 vlan-extended-filter allow-vlan-id 400-410

For some NICs receiving VLAN untagged traffic will add VLAN 0 to the VLAN filtering list, causing issues if those NICs also have a very low VLAN filtering capacity.

To prevent this, the following command specifies whether the VLAN 0 can be added to the VLAN filtering or not. When set to false, it will restrain VLAN 0 from being added to the VLAN filtering list.

vsr running config# / vrf main interface physical eth1 vlan-extended-filter allow-vlan-zero false

Warning

There is a limitation on the ixgbe NIC; up to 64 VLANs can be set regardless of their ID. Any VLAN set after exceeding this limit will be ignored.

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