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Implementation High Availability by Redundancy Protocols on Juniper Devices
ENG. Reema Ashaybani ENG.Adnan A. Abushagur ENG.Mohammed Q. Qaja
Project Aims
Project Aims
The aim of this project is to implement and compare between different first hop redundancy protocols (FHRP): (JSRP, VRRP) in performance and how each of them works to provide the network with redundancy to minimize network downtime and increase the availability of the network.
OUTLINE
Introduction
What is Availability
What is Redundancy
Relationship Between Redundancy & Availability
OUTLINE
Redundancy Protocols
JSRP,VRRP
The Project Network Topology
Results
Conclusion
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INTRODUCTION
In the modern world, most enterprises are becoming more considerate about the network availability and minimization of downtime because the demand for online applications and services has increased rapidly. This resulted in increasing demands for services that provide network availability and minimize network downtime for these businesses. High level of availability can be expensive to maintain, but lack of availability may also increase cost as it may damage the reputation of the business. Which led to the development of techniques that reduce downtime until it became transparent to the user.
WHAT IS AVILABILITY ?
Availability refers to the amount of time a network is available to users.
Availability can be expressed as a percent uptime per year, month, week, day, or hour, compared to the total time in that period.
The availability can be calculated by:
- AVILABILITY=MTBF/MTBF+MTTR
in order to increase the availability of a network, we need to provide a redundant route or redundant node in case of primary node failure.
WHAT IS REDUNDANCY ?
Redundancy means adding additional links or devices to a network to avoid downtime
Redundancy Used to guard the primary system from failure by acting as a back up system.
Redundant components can include both hardware elements of a system ، such as peripherals, servers, switches, routers
Availability Require Redundancy
Redundancy protocols
Redundancy protocols
- first hop redundancy protocol (FHRP):
is a computer networking protocol which is designed to protect the default gateway used on a subnetwork by allowing two or more routers to provide backup for that address; in the event of failure of an active router, the backup router will take over the address
Examples of (FHRP)
Examples of (FHRP)
- Hot Standby Router Protocol (HSRP)
- Virtual Router Redundancy Protocol (VRRP)
- Extreme Standby Router Protocol (ESRP)
- Gateway Load Balancing Protocol (GLBP)
- Routed Split multi-link trucking (R-SMLT)
- Juniper Service Redundancy Protocol (JSRP)
JSRP AND VRRP PROTOCOLS
VRRP
Virtual Router Redundancy Protocol (VRRP)
is an open standard redundancy protocol for establishing a fault-tolerant default gateway
VRRP Operation:
- Active/Standby Mode
ISP
Backup
Master
JSRP
Juniper Services Redundancy Protocol (JSRP)
is an Juniper proprietary redundancy protocol providing chassis clustering.
JSRP Operation:
- Active/Active Mode
JSRP Operation:
- Active/Passive Mode
ISP
Secondary
Primary
C
D
Protocols Comparison
The Project Network Topology
RESULTS
Time of Convergence
JSRP A/P
JSRP A/A
VRRP
JSRP A/P
JSRP A/A
VRRP
CPU Utilization
JSRP A/P
JSRP A/A
VRRP
JSRP A/P
JSRP A/A
VRRP
Traffic Flow and Packet loss
JSRP A/P
JSRP A/A
VRRP
JSRP A/A
JSRP A/P
VRRP
Conclusion
the main conclusion of the project is that the JSRP (active/active) provide better results than JSRP (active/passive) in terms of CPU utilization and packet loss, and provide better results than VRRP in terms of convergence time, CPU utilization and packet loss.