Common questions

How do I configure HSRP authentication?

How do I configure HSRP authentication?

Configuring HSRP MD5 Authentication Using a Key Chain

  1. enable.
  2. configure terminal.
  3. key chain name-of-chain.
  4. key key-id.
  5. key-string string.
  6. exit.
  7. exit.
  8. interface type number.

How do you troubleshoot HSRP?

  1. Verify Unique Router Interface IP Address.
  2. Verify Standby (HSRP) IP Addresses and Standby Group Numbers.
  3. Verify That Standby (HSRP) IP Address Is Different per Interface.
  4. When to Use the standy use-bia Command.
  5. Verify Access List Configuration.
  6. Review Unique Router Configurations (MSM and 4232-L3)

How do I configure HSRP on my router?

To achieve basic HSRP configuration, you need to do the following:

  1. Configure normal IP address on interface (cannot be the same as HSRP virtual IP)
  2. Bring interface up (no shutdown)
  3. Configure HSRP group and virtual IP address using the standby command.

How do I remove HSRP configuration?

hsrp ipv4. To activate the Hot Standby Router Protocol (HSRP), use the hsrp ipv4 command in HSRP interface configuration mode. To disable HSRP, use the no form of this command.

What is HSRP authentication?

MD5 authentication allows each HSRP group member to use a secret key to generate a keyed MD5 hash that is part of the outgoing packet. HSRP authentication protects against false HSRP hello packets causing a denial-of-service attack. For example, Device A has a priority of 120 and is the active device.

How do I check my HSRP status?

Showing HSRP State Information

  1. Problem. You want to see current HSRP information, such as which router is primary.
  2. Solution. To view the HSRP information, use the following EXEC command: Router2# show standby.
  3. Discussion.

How do I know if HSRP is configured?

Use the show hsrp command to display information about HSRP groups. The brief keyword displays a single line of information about each virtual gateway or virtual forwarder.

Can 2 HSRP routers become active active?

HSRP allows you to configure two or more routers as standby routers and only a single router as active router at a time. All the routers in a single HSRP group shares a single MAC address and IP address, which acts a default gateway to the local network.

What is the default priority setting on an HSRP router?

100
The default priority value is 100. The router in the HSRP group with the highest priority value becomes the active router. HSRP-enabled router with preempt configured attempts to assume control as the primary router when its priority is higher than the current active router.

How do I know if my HSRP is authentication?

What is HSRP configuration?

When HSRP is configured on a network or segment, it provides a virtual Media Access Control (MAC) address and an IP address that is shared among a group of configured routers. HSRP allows two or more HSRP-configured routers to use the MAC address and IP network address of a virtual router.

Do you need a Cisco account to use HSRP?

An account on Cisco.com is not required. HSRP ignores unauthenticated HSRP protocol messages. The default authentication type is text authentication. HSRP authentication protects against false HSRP hello packets causing a denial-of-service attack. For example, Device A has a priority of 120 and is the active device.

Which is the default authentication type for HSRP?

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/​go/​cfn. An account on Cisco.com is not required. HSRP ignores unauthenticated HSRP protocol messages. The default authentication type is text authentication.

What is the default priority for HSRP in Cisco?

• When multiple tracked interfaces are down and interface-priority values have been configured, the configured priority decrements are cumulative. If tracked interfaces that were not configured with priority values fail, the default decrement is 10, and it is noncumulative.

What is the group number for hsrpv1 Cisco?

The HSRP group number can be from 0 to 255. HSRPv1 uses the multicast address 224.0.0.2 to send hello packets, which can conflict with Cisco Group Management Protocol (CGMP) leave processing. You cannot enable HSRPv1 and CGMP at the same time; they are mutually exclusive. HSRPv2- Version 2 of the HSRP has these features: