Siemens RUGGEDCOM ROX II User Manual

RUGGEDCOM ROX II
CLI User Guide
Chapter 13
Unicast and Multicast Routing
VRF Concepts 557
• Section13.11.13, “Managing Static VRF Routes”
• Section13.11.14, “Managing Gateways for Static VRF Routes”
• Section13.11.15, “Managing Interfaces for Static VRF Routes”
Section13.11.1
VRF Concepts
This section describes some of the concepts important to the implementation of Virtual Routing and Forwarding
(VRF) in RUGGEDCOM ROX II.
CONTENTS
• Section13.11.1.1, “VRF and VRF-Lite”
• Section13.11.1.2, “Advantages and Disadvantages of Using VRF”
Section13.11.1.1
VRF and VRF-Lite
Both full VRF and VRF-Lite employ the concept of VRFs to isolate interfaces, provide IP address reuse and manage
routing tables. Both also provide a level of security for those interfaces forward to the VRFs. Under full VRF, MPLS
is used in conjunction with IP/VPNs to provide a greater level of security than VRF-Lite.
RUGGEDCOM ROX II supports both VRF and VRF-Lite simultaneously. Use of full VRF interfaces and VRF-Lite
interfaces can be mixed.
Section13.11.1.2
Advantages and Disadvantages of Using VRF
The advantages and disadvantages of using VRF include the following:
Advantages
• Create multiple isolated network pipes for various
data streams
• Provide individualized security for each VRF
• Manage each VRF separately for audit and billing
purposes
• Create separate Intranets within one work
environment
• Create VRFs based on differing services (e.g. Finance,
engineering, HR, etc.)
• Reduce the size of routing tables
• Re-use of IP addresses or subnets
• MPLS IP VPNs can replace much more expensive,
leased T1/E1 lines, while providing the same level of
security
Disadvantages
• Greater memory consumption. Each VRF configured
results in BGP route replication and requires new FIBs
and IP routing tables
• Extra processing (overhead) and memory consumption
due to namespace management

Siemens RUGGEDCOM ROX II Specifications

General

Brand	Siemens
Model	RUGGEDCOM ROX II
Category	Network Hardware
Language	English