-230
standby authentication
Use this command to specify the key used to authenticate HSRP packets
received from other routers. Use the
no
form to delete an authentication
string.
Syntax
standby
[
group
]
authentication
string
no
standby
[
group
]
authentication
•
group
- Identifies the HSRP group. (Range: 0-255)
•
string
- Authentication string. (Range: 1-8 alphanumeric characters)
Default Setting
Group number: 0
String: not defined
Command Mode
Interface (VLAN)
Command Usage
• All routers in the same HSRP group must be configured with the same
authentication string. The authentication string is sent unencrypted in
all HSRP messages.
• When an HSRP packet is received from another router in the group, its
authentication string is compared to the string configured on this
router. If the strings match, the message is accepted. Otherwise, the
packet is discarded. If the authentication strings do not match, this
router will not be able to learn the designated address for the group and
timer values from other routers. However, even if authentication fails,
this cannot prevent a router from taking over as the master router if it
has the highest priority in the group.
• Priority takes precedence over authentication. In other words, if a
router is configured with the
standby priority
command to have the
highest priority in the group, but does not have an authentication
string, or is configured with the wrong string, it will still take over as the
active master.
Summary of Contents for 8612XL3
Page 2: ......
Page 26: ...CONTENTS xxvi ...
Page 40: ...INTRODUCTION 1 14 ...
Page 69: ...BASIC CONFIGURATION 3 15 ...
Page 175: ...PORT CONFIGURATION 3 121 ...
Page 337: ...IP ROUTING 3 283 Web Click Routing Protocol RIP Statistics ...
Page 379: ...MULTICAST ROUTING 3 325 Command Usage ...
Page 396: ...CONFIGURING THE SWITCH 3 342 ...
Page 582: ...COMMAND LINE INTERFACE 4 186 ...
Page 806: ... 224 Command Mode Privileged Exec Example Console clear vrrp 1 interface 1 counters Console ...
Page 826: ... 6 ...
Page 828: ...TROUBLESHOOTING B 2 ...
Page 838: ...GLOSSARY Glossary 10 ...
Page 845: ......