EIGRP Timers

EIGRP sends hello packets every 5 seconds on high bandwidth links and every 60 seconds on low bandwidth multipoint links.

  • 5-second hello:

    • broadcast media, such as Ethernet, Token Ring, and FDDI

    • point-to-point serial links, such as PPP or HDLC leased circuits, Frame Relay point-to-point subinterfaces, and ATM point-to-point subinterface

    • high bandwidth (greater than T1) multipoint circuits, such as ISDN PRI and Frame Relay

  • 60-second hello:

    • multipoint circuits T1 bandwidth or slower, such as Frame Relay multipoint interfaces, ATM multipoint interfaces, ATM switched virtual circuits, and ISDN BRIs

  • To change the timers issue these commands on the interfaces.
  • ip hello-interval eigrp
  • ip hold-time eigrp

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