Configuration Guide Vol. 3

35.1.2 VRF

One of the functions for network-partitioning is VRF. VRF holds routing tables that are logically separated in the device, and forwards packets according to the routing tables. This distinct routing space is called a VRF instance.. Therefore, different VRF instances can use the same IP addressmore than once. In addition, the routing protocols operate independently for VRF instance.

VLAN belongs to either a VRF instance or a global network. A global network is a network that has not VRF been set. A global network is an instance that is not VRF configured and is separate from other VRF instances.

The following tables show the supported VRF for the various functions.

Table 35-3 VRF supported status

Item

Supported

Status

Remarks

VLAN function

Port VLAN

OK

No

Protocol VLAN

OK

MAC VLAN

OK

Tag translation

OK

VLAN tunneling

OK

VXLAN

OK

No

Layer 2 protocol

Spanning Tree Protocols

OK

No

Ring Protocol

OK

No

IGMP snooping and MLD snooping

OK

No

Filters

OK

No

QoS

OK

No

Layer 2 Authentication

IEEE 802.1X

-

VRF and device-based lock

Web Authentication

-

VRF and device-based lock

MAC-based Authentication

-

VRF and device-based lock

DHCP Snooping

OK

No

Highly reliable functions

GSRP

OK

No

VRRP

OK

Uplink Redundancy

OK

Network monitoring function

L2 Loop Detection

OK

No

Storm Control

OK

Network management

Port Mirroring

OK

No

Policy-Based Mirroring

OK

sFlow Statistics

#

VRF are also included in the statistical object. However, the router-type extended data format and gateway-type extended data format are not valid for the information collected by VRF configured interfaces.

Install the collector in the global network.

IEEE 802.3ah/UDLD

OK

No

CFM

OK

LLDP

#

Organizationally-defined TLV extensions is supported only by globally networked devices. For details, see the following:

  • "Configuration Guide Notes on Using Vol.2" "24.1.3 LLDP"

OADP

#

In VLAN of VRF, OADP does not include Address. For details, see the following:

  • "Configuration Guide Notes on Using Vol.2" "25.1.3 OADP"

PTP

-

VRF and device-based lock

Layer 3 forwarding

IPv4 unicast forwarding

OK

In addition to this chapter, see the following:

  • "8.12 VRF Explanation [SL-L3A]"

  • "8.13 VRF configuration [SL-L3A]"

  • "8.14 VRF operation [SL-L3A]"

IPv4 unicast VRF forwarding

OK

For details, see the following:

  • [8.12.3 Extranet

  • "Configuring static routes across 9.2.7 VRF [SL-L3A]"

  • [14.1.6 Extranet [SL-L3A]

  • [14.2.8 Extranet [SL-L3A]

  • [14.3.10 Check Extranet [SL-L3A]

IPv4 multicast forwarding

OK

For details, see the following:

  • IPv4 Multicast in 15.4.6 VRF [SL-L3A]

  • [16.1 Configuration"

  • "17 IPv4 multicast route filtering"

IPv4 multicast VRF forwarding

OK

IPv6 unicast forwarding

OK

In addition to this chapter, see the following:

  • "24.12 VRF Explanation [SL-L3A]"

  • "24.13 VRF configuration [SL-L3A]"

  • "24.14 VRF operation [SL-L3A]"

IPv6 unicast VRF forwarding

OK

For details, see the following:

  • [24.12.3 Extranet

  • "Configuring static routes across 25.2.7 VRF [SL-L3A]"

  • [30.1.6 Extranet [SL-L3A]

  • [30.2.8 Extranet [SL-L3A]

  • [30.3.9 Check Extranet [SL-L3A]

IPv6 multicast forwarding

OK

For details about IPv6 multicast forwarding in VRF, see the following:

  • IPv6 Multicast in 31.4.11 VRF [SL-L3A]

  • [32.1 Configuration"

  • "33 IPv6 multicast route filtering"

IPv6 multicast VRF forwarding

OK

NULL interfaces

OK

The global network and VRF share one NULL interface.

Policy-based Routing

OK

It can also be routed between VRF.

For the configuration of inter VRF policy-based routing, refer to the following:

  • [4.2.3 Configuring Extranets for Policy-Based Routing

RA

OK

No

DHCP and BOOTP relay agents

OK

For information about configuring relay agents on VRF, see the following:

  • "5.2.4 VRF Configuration Settings [SL-L3A]"

  • [5.2.5 Extranet Configuration Settings [SL-L3A]

DHCP Server Functionality

-

Only for global networks

IPv6 DHCP relay

-

Only for global networks

IPv6 DHCP Server Functionality

-

Only for global networks

UDP broadcast relay

OK

A packet is forwarded according to the routing table of VRF to which the interface that received the forwarded packet belongs. When configuring an extranet, exchange routes between VRF.

IPv4 static routing

OK

It can also be routed between VRF.

For configuration, refer to the following:

  • "Configuring static routes in 9.2.6 VRF [SL-L3A]"

  • "Configuring static routes across 9.2.7 VRF [SL-L3A]"

IPv6 static routing

OK

It can also be routed between VRF.

For configuration, refer to the following:

  • "Configuring static routes in 25.2.6 VRF [SL-L3A]"

  • "Configuring static routes across 25.2.7 VRF [SL-L3A]"

  • "Configuring a static route between VRF using a 25.2.8 IPv6 link-local address as the next hop [SL-L3A]"

IPv4 unicast routing protocol

RIP

OK

For configuration, refer to the following:

  • "Applying RIP in 10.2.8 VRF [SL-L3A]"

  • "Applying OSPF in 11.2.7 VRF"

OSPF

OK

BGP4

OK

For details, see the following:

  • "BGP4 Features in 13.1.4 VRF"

  • "Configuring BGP4 on 13.2.11 VRF"

Route Filtering

OK

No

IPv6 unicast routing protocol

RIPng

OK

For configuration, refer to the following:

  • "Applying RIPng in 26.2.5 VRF [SL-L3A]"

  • "Applying OSPFv3 in 27.2.7 VRF"

OSPFv3

OK

BGP4+

OK

For details, see the following:

  • "BGP4+ function in 29.1.4 VRF"

  • "Setting BGP4+ in 29.2.11 VRF"

Route Filtering

OK

No

IPv4 Multicast Routing Protocols

IGMP

OK

For details, see the following:

  • IPv4 Multicast in 15.4.6 VRF [SL-L3A]

  • [16.1 Configuration"

  • "17 IPv4 multicast route filtering"

PIM-SM

OK

PIM-SSM

OK

IPv6 Multicast Routing Protocols

MLD

OK

For details, see the following:

  • IPv6 Multicast in 31.4.11 VRF [SL-L3A]

  • [32.1 Configuration"

  • "33 IPv6 multicast route filtering"

PIM-SM

OK

PIM-SSM

OK

BFD

OK

No

Operation and maintenance

ping

OK

No

traceroute

OK

telnet

OK

ftp

OK

tftp

OK

SSH clients

OK

Logging in with telnet

OK

For details, see the following:

  • "Allow login from remote operation terminal in the configuration guide Vol.1" "10.1.9 VRF [SL-L3A]"

  • "Configuration Guide Setting of IP Addresses Allowing Login from Remote Operation Terminals in Vol.1" "10.1.10 VRF [SL-L3A]"

Logging in with ftp

OK

SSH servers

OK

For details, see the following:

  • "Accessing by SSH on the Configuration Guide Vol.1" "11.2.7 VRF [SL-L3A]"

DNS resolver

-

Only for global networks

NTP

OK

For configuration, refer to the following:

  • "Setting the time synchronization by NTP in the configuration guide Vol.1" "12.1.6 VRF [SL-L3A]"

Syslog Out

OK

For details on configuring syslog out to VRF, see the following:

  • "Configuration Guide: Configuring syslog Outputting to VRF in Vol.1" "17.2.3 Logging [SL-L3A]"

E-Mail Out

-

Only for global networks

SNMP

OK

For information about configuring SNMP on VRF, see the following:

  • "Configuration Guide Vol.1" "18.2 Configuration"

MIB

#

Some MIB are only for globally networked. For details, see the following:

  • MIB Reference "2 Standard MIB(RFC Compliance and IETF Drafting MIB)"

  • MIB Reference 3 Private MIB

SNMP notification

#

Some SNMP notifications apply only to globally networked. For details, see the following:

  • MIB Reference-"4 SNMP Notification"

(Legend) OK: Support #: Partial support-: Not supported

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