Vyatta Network OS Documentation

Learn how to install, configure and operate the Vyatta NOS, which helps drive our virtual networking & physical platforms portfolio.

Naming sequence

The following table describes how a vRouter assigns names to interfaces and whether they persist.
Table 1. vRouter interface naming on the KVM platform
Hot-plugging sequence example Naming Sequence Naming sequence after restarting the router Naming sequence after shutting down the router and starting it

A nonpersistent interface is hot-plugged.

The interface is hot-plugged into the next available PCI slot with the higher slot number. For example, dp0s3.

dp0s3

The dp0s3 interface no longer exists.

A persistent interface is hot-plugged.

The interface is hot-plugged into the next available PCI slot with the higher slot number. For example, dp0s3.

dp0s3

The dp0s3 interface persists.

A nonpersistent interface is hot-plugged followed by another nonpersistent interface.

The interfaces are hot-plugged into the next available and consecutive PCI slots with the higher numbers. For example, dp0s3 followed by dp0s4.

dp0s3

dp0s4

The dp0s3 and dp0s4 interfaces no longer exist.

A nonpersistent interface is hot-plugged followed by a persistent interface.

The interfaces are hot-plugged into the next available and consecutive PCI slots with the higher numbers. For example, dp0s3 followed by dp0s4.

dp0s3

dp0s4

The dp0s3 interface is detached and the dp0s4 interface persists, but it is plugged into PCI slot 3 (dp0s3).

A persistent interface is hot-plugged followed by a nonpersistent interface.

The interfaces are hot-plugged into the next available and consecutive PCI slots with the higher numbers. For example, dp0s3 followed by dp0s4.

dp0s3

dp0s4

The dp0s3 interface persists, but the dp0s4 interface is detached and no longer exists.

A persistent interface is hot-plugged into PCI slot 10.

The interface is hot-plugged into PCI slot 10.

dp0s10

The dp0s10 interface persists.

A nonpersistent interface is hot-plugged into PCI slot 10.

The interface is hot-plugged into PCI slot 10.

dp0s10

The dp0s10 interface is detached and no longer exists.

A nonpersistent interface is hot-plugged followed by a persistent interface that is hot-plugged into PCI slot 10.

The nonpersistent interface is plugged into the next available slot with the higher number (for example, dp0s3).

The persistent interface takes slot 10.

dp0s3

dp0s10

The dp0s10 interface persists.

The dp0s3 interface is detached and no longer exists.

A persistent interface is hot-plugged followed by a nonpersistent interface that is hot-plugged into PCI slot 10.

The persistent interface takes the next available higher slot.

The nonpersistent interface takes slot 10.

dp0s3

dp0s10

The dp0s3 interface persists.

The dp0s10 interface is detached and no longer exists.

A persistent interface is hot-plugged followed by a persistent interface that is hot-plugged into PCI slot 10.

The first persistent interface takes the next available higher slot.

The second persistent interface takes slot 10.

dp0s3

dp0s10

The dp0s3 interface persists.

The dp0s10 interface persists.

A nonpersistent interface is hot-plugged followed by a nonpersistent interface that is hot-plugged into PCI slot 10.

The first nonpersistent takes the next available higher slot.

The second nonpersistent interface takes slot 10.

dp0s3

dp0s10

The dp0s3 interface is detached and no longer exists.

The dp0s10 interface is detached and no longer exists.

A persistent interface is hot-plugged followed by a persistent interface (dp0s4) and then the former interface is detached.

The second interface persists.

dp0s4

The dp0s4 interface persists.