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New Member

HSRP+ EIGRP load sharing

Hi folks,

We have the following network,replace loctn with routers.

HSRP

loctn1 -----------loctn2

| |

| |

| |

| |

| |

| |

loctn3 ---loctn4----loctn5

We want to use HSRP for device redundancy and EIGRP would run on WAN.

consider loctn1 is the primary router and loctn2 is the sec router.

Moreover loctn2 routers learns a default route from loctn5 and other specific routes from loctn4

once packets destined to the default route hits the loctn1 router, will EIGRP kick on and through loctn2 reach loctn5?

-Sai.

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Silver

Re: HSRP+ EIGRP load sharing

Sai

It is difficult to give a precise correct answer without knowing a bit more about the environment that you describe. If loctn5 generates a default route, does it propagate through loctn4 and loctn3 to loctn 1 or is it just to loctn2? What would be the metrics between the various routers?

But if I understand the point of your question to be that loctn1 learns the default route from loctn2 and loctn1 has a packet to forward that uses the default route, then yes loctn1 will forward to loctn2 to reach loctn5.

HTH

Rick

5 REPLIES
New Member

Re: HSRP+ EIGRP load sharing

Seems the diagram has got disintegrated. loctn2 connects to loctn5

-Sai.

Hall of Fame Super Silver

Re: HSRP+ EIGRP load sharing

Sai

It is difficult to give a precise correct answer without knowing a bit more about the environment that you describe. If loctn5 generates a default route, does it propagate through loctn4 and loctn3 to loctn 1 or is it just to loctn2? What would be the metrics between the various routers?

But if I understand the point of your question to be that loctn1 learns the default route from loctn2 and loctn1 has a packet to forward that uses the default route, then yes loctn1 will forward to loctn2 to reach loctn5.

HTH

Rick

New Member

Re: HSRP+ EIGRP load sharing

Hi Rick,

I was expecting the same reply from you... I only a confusion about HSRP and EIGRP co-existing.

I had a feeling that once he loctn1 router becomes the pri router.. will the loctn2 router take part in routing.

HSRP will play a role in the election of pri router and the rest routing will be taken care by EIGRP.

Hall of Fame Super Silver

Re: HSRP+ EIGRP load sharing

Sai

EIGRP (or any other dynamic routing protocol) can easily exist along with HSRP. There is not anything in HSRP that has any impact on the routing protocol. HSRP has to do with which device will function as the default gateway for end stations on the LAN but does not affect routing. So HSRP will determine that loctn1 will become the active or primary router for that subnet, but HSRP does not make or influence any decision about how the router should forward packets to destinations off the subnet.

HTH

Rick

New Member

Re: HSRP+ EIGRP load sharing

Rick,

Thank you so much... u r a rockstar....

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