Overview of vrrp, Standard vrrp – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual

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774

Multi-Service IronWare Routing Configuration Guide

53-1003033-02

Overview of VRRP

This chapter describes how to configure the following router redundancy protocols:

•

Virtual Router Redundancy Protocol (VRRP) – The standard router redundancy protocol. There
are two versions of the protocol. VRRP v2 supports the IPv4 environment and VRRP v3
supports the IPv4 and IPv6 environments.

•

VRRP Extended (VRRP-E) – A proprietary version of VRRP that overcomes limitations in the
standard protocol. This protocol works only with Brocade IP devices. The devices support
VRRP-E version 2 and VRRP-E version 3. VRRP-E v2 supports the IPv4 environment and
VRRP-E v3 supports the IPv6 environment.

NOTE

The maximum number of configured VRRP and VRRP-E instances on a Brocade NetIron XMR or
Brocade MLX series device is 2000. However, only 255 instances of VRRP v3 are supported with a
sub-second hello interval, and VRRP-E is supported with the scale timer.

The maximum number of configured VRRP and VRRP-E instances on Brocade NetIron CES and
Brocade NetIron CER devices is 255.

Overview of VRRP

This section presents the standard VRRP options and the options that were added in its
implementation of VRRP.

Standard VRRP

VRRP is an election protocol that provides redundancy to routers within a LAN. VRRP allows you to
provide alternate router paths for a host without changing the IP address or MAC address by which
the host knows its gateway. Consider the situation shown in

Figure 39

VRRP-Extended
Slow Start

Yes

VRRP-Extended
Scale Timer

Yes

VRRP-E
Extension for
Server
Virtualization

Yes

Virtual MAC
address per
VRID

Yes

TABLE 169

Supported Brocade VRRP and VRRP-E features (Continued)

Features
supported

Brocade
NetIron XMR
Series

Brocade
MLX Series

Brocade
NetIron CES
2000
Series
BASE
package

Brocade
NetIron CES
2000 Series
ME_PREM
package

Brocade
NetIron CES
2000
Series
L3_PREM
package

Brocade
NetIron CER
2000 Series
Base
package

Brocade
NetIron CER
2000 Series
Advanced
Services
package