04 Virtual Router Redundancy Protocol

04 Virtual Router Redundancy Protocol - Virtual Router...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. Virtual Router Redundancy Protocol VRRP
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. The Problem 10.0.0.1/16 R1 Default GW = 10.0.0.1/16
Background image of page 2
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. The Solution - VRRP 10.0.0.1/16 R1 R2 Default GW = 10.0.0.1/16 10.0.0.2/16 VIP: 10.0.0.1/16
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. VRRP Introduction End host systems on a LAN are often configured to send packets to a statically configured default router. If this default router becomes unavailable, all the hosts that use it as their first hop router become isolated on the network. VRRP groups several physical routers into a VRRP virtual router, and assigns a virtual IP and a MAC addresses to the virtual router, which are then used as a default gateway by the end devices.
Background image of page 4
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. VRRP Overview All routers in the VR group communicate to each other using IP multicast. Every VR group is identified by a VRID, which is configured on all participants. To minimize network traffic, only the Master for each virtual router sends periodic VRRP Advertisement messages. If the Master become unavailable then the highest priority Backup will transition to Master after a short delay and will take over servicing the virtual IP and MAC addresses .
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. VRRP Packet Format 4 bytes 4 bits 4 bits 8 bits 8 bits 8 bits Version Type Virtual Router ID Priority Count IP Addrs Auth Type Adver Int Checksum IP Address (1) IP Address (n) Authentication Data (1) Authentication Data (2)
Background image of page 6
ZTE University univ.zte.com.cn univ.zte.com.cn The information contained in the file is solely property of ZTE corporation. Any kind of disclosing without permission is prohibited. IP Field Descriptions The Virtual Router Identifier (VRID) field identifies the virtual router this packet is reporting status for.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 23

04 Virtual Router Redundancy Protocol - Virtual Router...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online