Tham khảo tài liệu 'routing9', công nghệ thông tin, chứng chỉ quốc tế phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Network Robustness 789 Example 9 51 Enabling HSRP Interface Tracking on Router Monet Monet interface Ethernetl standby 1 track EthernetO 15 standby 1 track Seriall 15 Picasso interface EthernetO standby 1 priority 100 preempt delay 10 Figure 9 8 Network Illustrating HSRP Interface Tracking Wks1 Default route 172 16 1 201 Note that Monet is tracking both Serial 1 and Ethernet 0 If only one tracked interface goes down Monet s priority is 105 still higher than Picasso s so Monet continues to be active If both interfaces fail Monet begins advertising its priority as 90 rather than 120 After waiting the preempt delay time Picasso sends an HSRP coup message indicating to Monet that it is taking over as the active router Monet resigns as active router and listens for other HSRP messages to determine whether it is to become the standby router You must add the preempt statement to Picasso s HSRP configuration to enable the takeover When one of Monet s interfaces becomes active again its priority rises to 105 Monet has preempt and delay configured so Monet waits 10 seconds before taking over as the active router for group 1 Configuring MHSRP Figure 9 9 illustrates Multigroup HSRP Please purchase PDF Split-Merge on to remove this watermark. 790 Chapter 9 Router Management Figure 9 9 Network Illustrating MHSRP 172 16 1 100 HSRP grp 1 172 16 1 201 HSRP grp 1 priority 110 HSRP grp 2 172 16 1 1 202 172 16 1 101 HSRP grp 1 172 16 1 201 HSRP grp 2 172 16 1 202 HSRP grp 2 priority 110 Wks1 Default route 172 16 1 201 Wks2 Default route 172 16 1 202 The configurations in Example 9 52 are for MHSRP on routers Monet and Picasso Example 9 52 Configuring MHSRP on Routers Monet and Picasso Router Monet interface Ethernet 1 ip address 172 16 1 100 255 255 255 0 standby 1 priority 120 preempt delay 10 standby 1 authentication secret standby 1 ip 172 16 1 201 standby 2 authentication secret standby 2 ip Router Picasso interface Ethernet 0 ip address 172 16 1 101 255 255 255 0
