Tip

This is the documentation for the 20.02 version. Looking for the documentation of the latest version? Have a look here.

Configure Interfaces

With the configuration data in hand, it is now possible to configure TNSR interfaces for basic IP level connectivity.

From within the TNSR CLI (Entering the TNSR CLI), enter configuration mode and setup the interfaces using this example as a guide:

tnsr# configure terminal
tnsr(config)# interface GigabitEthernet0/14/1
tnsr(config-interface)# description WAN
tnsr(config-interface)# ip address 203.0.113.2/24
tnsr(config-interface)# ipv6 address 2001:db8:0:2::2/64
tnsr(config-interface)# enable
tnsr(config-interface)# exit
tnsr(config)# interface GigabitEthernet0/14/2
tnsr(config-interface)# description LAN
tnsr(config-interface)# ip address 10.2.0.1/24
tnsr(config-interface)# ipv6 address 2001:db8:1::1/64
tnsr(config-interface)# enable
tnsr(config-interface)# exit
tnsr(config)# exit
tnsr#

In this sample session, both interfaces were configured with an appropriate description for reference purposes, an IP address/subnet mask, and then placed into an enabled state.

If other hosts are present and active on the connected interfaces, it will now be possible to ping to/from TNSR to these networks.

Tip

After making changes, don’t forget to save them to ensure they persist for the next startup by issuing the configuration copy running startup command from with in config mode. See Saving the Configuration for more information.

Interface Command

The interface command can configure existing interfaces and create new interfaces.

Configure an existing interface:

tnsr(config)# interface <name>
tnsr(config-interface)#

This command enters config-interface mode

Note

The maximum interface name length is 63 characters.

Create a new interface:

tnsr(config)# interface <type> <options>

The mode entered by this command depends upon the type of interface it creates. For more information on interface types and how to configure them, see Types of Interfaces.

Print a list of available interfaces and types:

tnsr(config)# interface ?

Interface Configuration Options

The following commands are available when configuring an interface (config-interface mode):

access-list (input|output) acl <acl-name>:

Access Control Lists which apply to packets on this interface in the given direction (Standard ACLs).

access-list macip <macip-name>:

MACIP Access Control Lists which apply to packets on this interface (MACIP ACLs).

bond <id>:

Set this interface as a part of the given bonding group (Bonding Interfaces).

bridge domain <id>:

Set this interface as a member of the given bridge domain (Bridge Interfaces).

description:

Set the interface description.

detailed-stats (enable|disable):

Enable or disable the collection of detailed packet statistics which individually track received and transmitted unicast, multicast, and broadcast packets. Disabled by default. Disabling these counters for an interface will not clear the values, it only stops new data collection.

dhcp client [ipv4]:

Configures this interface to obtain its IPv4 address using Dynamic Host Configuration Protocol.

dhcp client ipv4 hostname <host-name>:

Sets the hostname sent with DHCP client requests.

disable:

Disable interface administratively.

enable:

Enable interface administratively.

ip address <ip-address>:

Sets the IPv4 address for this interface. May be repeated to add multiple addresses to an interface.

Note

TNSR 19.08 and later support multiple IP addresses in the same prefix. Older versions only allowed a single address per prefix.

ip nat (inside|outside|none):

Configures this interface to be an inside or outside NAT interface (Network Address Translation). To stop an interface from participating in NAT, use either no ip nat or ip nat none.

ip reassembly enable:

Enables IP Reassembly for IPv4.

ip reassembly type (full|virtual):

Sets the type of IP Reassembly to perform on this interface for IPv4 fragments.

ip route-table <route-table-name>:

Configures a specific IPv4 route table to be used for traffic exiting this interface.

ipv6 address <ip6-address>:

Sets the IPv6 address for this interface. May be repeated to add multiple addresses to an interface.

Note

TNSR 19.08 and later support multiple IP addresses in the same prefix. Older versions only allowed a single address per prefix.

ipv6 reassembly enable:

Enables IP Reassembly for IPv6.

ipv6 reassembly type (full|virtual):

Sets the type of IP Reassembly to perform on this interface for IPv6 fragments.

ipv6 route-table <route-table-name>:

Configures a specific IPv6 route table to be used for traffic exiting this interface.

lldp:

LLDP options for this interface (Link Layer Discovery Protocol).

mac-address:

Configures an alternative MAC address for this interface.

Warning

Changing the MAC address on an active interface will result in unpredictable behavior. Packets already in transit addressed to the old MAC will be dropped, and it may take some time for other hosts and equipment on directly connected networks to update their ARP tables with the new MAC address.

The best practice is to set an interface administratively down (disable) before changing the MAC address, and then enable it again afterward.

map:

MAP-E/T options for this interface (MAP (Mapping of Address and Port)).

mtu <size>:

Sets the interface L2 Maximum Transmission Unit (MTU) size, in bytes.

rx-queue <queue_num> cpu <core-id>:

Pin a specific receive queue for this interface to a specific CPU core. Both the queue number and core ID must be valid and within range for the configured number of queues and cores as set with either corelist-workers or coremask-workers.

See also

For more information on configuring interface queue sizes, see DPDK Configuration. To configure CPU core usage see CPU Workers and Affinity.

Warning

This option requires a list of cores configured for dataplane use by the either the corelist-workers or coremask-workers methods. RX queue core pinning is incompatible with the workers and skip-list methods of defining CPU cores available for use by the dataplane.

vlan tag-rewrite disable:

Disable tag rewriting for this interface

vlan tag-rewrite pop-1:

Remove one level of VLAN tags from packets on this interface.

vlan tag-rewrite pop-2:

Remove two level of VLAN tags from packets on this interface.

vlan tag-rewrite push-1 (dot1ad|dot1q) <tag 1>:

Add a new layer of VLAN tagging to frames on this interface using the provided VLAN tag.

vlan tag-rewrite push-2 (dot1ad|dot1q) <tag 1> <tag 2>:

Add two new layers of VLAN tagging to frames on this interface using the provided VLAN tags.

vlan tag-rewrite translate-1-1 (dot1ad|dot1q) <tag 1>:

Replace one layer of VLAN tags with the a different VLAN ID.

vlan tag-rewrite translate-1-2 (dot1ad|dot1q) <tag 1> <tag 2>:

Replace one layer of VLAN tags with two layers of tagging using the provided VLAN IDs.

vlan tag-rewrite translate-2-1 (dot1ad|dot1q) <tag 1>:

Replace two layers of VLAN tags with one layer of tagging using the provided VLAN ID.

vlan tag-rewrite translate-2-2 (dot1ad|dot1q) <tag 1> <tag 2>:

Replace two layers of VLAN tags with two different layers of tagging using the provided VLAN IDs.

DHCP Client Example

The previous example was for a static IP address deployment.

To configure a TNSR interface to obtain its IP address via DHCP as a client, follow this example instead:

tnsr# configure terminal
tnsr(config)# interface GigabitEthernet3/0/0
tnsr(config-interface)# dhcp client ipv4
tnsr(config-interface)# enable
tnsr(config-interface)# exit
tnsr(config)# exit