The hsrp mac address will be 0000.0c07.ac00


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  • Cisco Nexus 7000 Series NX-OS Unicast Routing Configuration Guide, Release 5.x.

Routers Routers. Any expert can help to explain mac-address-table? Hi, Please see below, which is show mac-address table. Can you explain what Router means in the table and why it is dynamic or static? Thank you C sh mac-address-table section Who is Participating? Solutions Learn More Through Courses. Experts Exchange Solution brought to you by Enjoy your complimentary solution view. Get this solution by purchasing an Individual license!

Start your 7-day free trial. I wear a lot of hats LVL Craig Beck Commented: Dynamic means the switch learned the MAC address from another device. If you see static with an interface that means you configured the MAC to IP statically on the switch.

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We can also see that device with MAC 78e1. I am sorry for the delay due to another project. I cannot understand why one same mac address " As an example, if you have used standby 1 ip x. Similarly, if you used standby ip x. The following is true Experts Exchange Solution brought to you by Your issues matter to us.

Excellent explanation!


  1. Ensure Cisco router redundancy with HSRP.
  2. Any expert can help to explain mac-address-table ??
  3. Introduction to The Hot Standby Router Protocol (HSRP) | | Pearson IT Certification.
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  6. You explained why there are two kinds of mac address which are static and dynamic, but I am still asking why there are two dynamic mac address and two static mac address in one ? It's more than this solution.

    HSRP Duplicate Address cac01 - Cisco Community

    Get answers and train to solve all your tech problems - anytime, anywhere. Try it for free Edge Out The Competition for your dream job with proven skills and certifications. When using HSRP, routers can either be primary or standby. If the primary router doesn't send out the HELLO packet to the standby router for a period of time, the standby router assumes the primary router is down and thus takes over.

    The standby router then assumes responsibility for the virtual IP address and begins responding to the virtual Ethernet MAC address to which the virtual IP address is pointing.

    Cisco Nexus 3000 Series NX-OS Unicast Routing Configuration Guide, Release 7.x

    What determines the active router? First, you can configure a priority number to determine it, and then it's by the highest IP address. The default priority number is ; a higher priority number signifies the preferred router. Of course, when setting up router redundancy, you aren't limited to just two routers. In fact, you can set up groups of routers that work together and have multiple "standby" routers.

    Let's look at the steps I took to configure the network shown in the diagram. This command tells you which router is active and which is standby, as well as a number of other statistics. On the PC, the default IP address should point to This way, if one of the routers goes down, the other will take over. And you may even be able to use this redundancy to take production routers down during the day because the HSRP failover time is less than 10 seconds. HSRP is a valuable tool for ensuring high availability and router redundancy.

    Want to learn more about router and switch management?

    Networking : Fault Tolerant Default Gateway - Hot Standby Router Protocol [HSRP]

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    What is HSRP?

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