Layer 2-7 High Availability Deployment Guide - Force10 Networks

More documents

Recommendations

Info

9a) To test HA Failover or reset back to Primary / Secondary roles, you can ‘Force Failover’ from the High Availability screen. 16 High Availability Failover Operation The secondary Application Switch monitors the primary by sending periodic messages, or health checks, to the primary to determine whether it is accepting connections or not. If a health check fails, the secondary retries the connection for a specific time period until it determines that the primary Application Switch is not functioning normally. After making that determination, the secondary Application Switch takes over for the primary, a process called failover. During HA monitoring, all enabled ports on the Primary NetScaler are ‘active’, while all enabled ports on the Secondary NetScaler are ‘passive’. An HA failover event will occur anytime a network failure occurs which effects any critical NetScaler port which has HA monitoring (HAMON) enabled on it. HA Monitoring allows both the Primary & Secondary NetScalers to monitor each others status via HA heartbeat packets sent in milliseconds as specified by the Hello Interval parameter. An HA failover event occurs when the secondary NS does not receive an HA heartbeat on one of its HAMON enabled ports within the time frame specified specified in seconds by the Dead Interval parameter, or anytime the “force HA failover” netscaler CLI command is issued.
Before HA Failover L2/3 E600 VLAN 97 VLAN Trunk S50N VLAN 96 Untagged Servers L2/3 Citrix NetScaler® 1 L4/7 Citrix NetScaler® 2 L4/7 S50N VLAN 91 VRRP VLAN 92 VRRP L2/3 E600 Traffic Flow Before HA Failover VLAN 98 L2/3 VLANs xxx, xxx, xxx, ..., xxx 9b) The Status of HA Monitoring can be seen by clicking on the ‘Details’ button in the High Availability screen of the NetScaler GUI. View Node Details, before HA Failover. Primary. Secondary. 17
Page 1 and 2: Deployment Guide Layer 2-7 High Ava
Page 3 and 4: Table of Contents Introduction ....
Page 5 and 6: Prerequisites • • • Citrix Ne
Page 7 and 8: Secondary L2/3 F10-1 E600 VLAN 97 V
Page 9 and 10: If you have two Application Switche
Page 11 and 12: 4c) Both Primary and Secondary must
Page 13 and 14: Important NetScaler IP Addresses Ac
Page 15: Configuring the Virtual MAC The Vir
Page 19 and 20: Note: Refer to the NetScaler Applic
Page 21 and 22: ind vlan xxx -ifnum 1/3 -tagged bin
Page 23 and 24: Appendix B - Layer 2/3 Switch/Route
Page 25 and 26: interface Vlan xxx ip address 10.1.
Page 27 and 28: ip address 172.21.1.254/24 secondar
Page 29: About Citrix Citrix Systems, Inc. (

Layer 2-7 High Availability Deployment Guide - Force10 Networks

Create successful ePaper yourself

Delete template?

Save as template?