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JunosE 11.3.x Service Availability Configuration Guide
Related
Documentation
ICR Terms
ICR References
ICR Scaling Considerations
172
host1(config)#interface tenGigabitEthernet 5/0/0
Interface Types and Specifiers
Table 29 on page 172 defines terms used in this discussion of ICR.
Table 29: ICR Terminology
Term
ICR cluster
ICR interface
ICR partition
VRRP
VSA
For more information about ICR, see the following resources:
RFC 2338—Virtual Router Redundancy Protocol (April 1998)
RFC 2787—Definitions of Managed Objects for the Virtual Router (March 2000)
RFC 2865—Remote Authentication Dial In User Service (RADIUS) (June 2000)
RFC 2866—RADIUS Accounting (June 2000)
When planning an ICR cluster you must ensure that you have provisioned adequate
backup capacity in the event of a worst-case failure scenario such as a multiple hardware
or multiple router failure.
Description
Group of E Series routers participating in interchassis redundancy
(ICR) deployment.
Physical interface, for example, gigabitEthernet 3/1/3, on an E Series
router on which ICR is enabled. The ICR interface is always tied to a
unique router.
A logical group of subscriber interfaces within a single ICR interface.
For example, the ICR partition can be a group of S-VLANs configured
on a single physical interface. You can create multiple partitions on
each ICR interface and configure the number of partitions, as well as
assign subscribers to the partition. An ICR partition can be configured
as master or backup.
Virtual Router Redundancy Protocol. Use VRRP to prevent loss of
network connectivity by configuring backup routers. The backup
routers maintain network connectivity when the master router fails.
You can configure unique VRRP instances to manage each ICR
partition.
Vendor-specific attributes. VSAs are defined by remote-access server
vendors to customize how RADIUS works on their servers. VSAs can
be used in combination with RADIUS-defined attributes.
Copyright © 2010, Juniper Networks, Inc.
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