ATTN network geeks....

[Conrad]

Ok quick question...

I have an EIGRP question.. im not in the mood to look it up...

I have HSRP setup between two buildings... lets say... network 10.1.1.0/24

I have .2 and .3 one in each building... .1 being the virtual HSRP address.

To have this work I have to advertise that network on both those switches.. But I dont want it to go to .3 ever other then when its failed over. So how do I weight .3 higher so other bldg traffic doesnt come to .3 when .2 and .3 are equal???

I am tired.. ask questions I may not have explained it well enough..

[-=[Juztin]=-]

HSRP should only direct traffic to the primary.

The primary being the node that has the Virtual IP & mac assigned to it.

I dont see a problem w/ traffic going to the slave until the primary is deemed down, provided the downstream has it's DG set to the HSRP IP.

[Conrad]

=-']HSRP should only direct traffic to the primary.

The primary being the node that has the Virtual IP & mac assigned to it.

I dont see a problem w/ traffic going to the slave until the primary is deemed down, provided the downstream has it's DG set to the HSRP IP.


Ok get this.... I have 112 6509 switches amongst a bunch of buildings... They all have trunks to several others... We share a transport vlan (a network that is on all of them)(most are layer 3 switches) but some arent. so I have this HSRP setup between two bldgs... YOU HAVE to advertize that network on both of those switches... I want a lower wieght on the bldg the vlan "really" belongs to.

[-=[Juztin]=-]

Sounds like your primary HSRP memeber is in the buliding you do not want and traffic is going thru that building. Just make the other HSRP member more desireable so it's always the primary unless it's down. You shouldn't have to bother with EIGRP.

Otherwise just change the EIGRP interface cost.
EDIT: oops, our network is OSPF; cost is OSPF based, EIGRP uses fd which i'm pretty damn sure u can manipulate by modify the bandwidth statement on an interface.

[Conrad]

interface cost yes... that is promising...

Justin the interface that is up and the one that is a standby is completely irrelevant... They are both addresses that are alive and being advertized...

[Conrad]

=-']Sounds like your primary HSRP memeber is in the buliding you do not want and traffic is going thru that building. Just make the other HSRP member more desireable so it's always the primary unless it's down. You shouldn't have to bother with EIGRP.

Otherwise just change the EIGRP interface cost.
EDIT: oops, our network is OSPF; cost is OSPF based, EIGRP uses fd which i'm pretty damn sure u can manipulate by modify the bandwidth statement on an interface.

yes... there is no interface cost in eigrp... But i really didnt want to change the bandwidth cost on vlan interfaces...

[-=[Juztin]=-]

you can look at injecting a lower AD through the more desireable switch that's participating in EIGRP. Just setup an ACL to allow the network you wanna advertise, then setup the distance command in your EIGRP instance and set the AD distance a little lower than default EIGRP. Or vice-versa on the less desireable switch. Just be careful in what you set the distance to and how that might play with the neighbor later on. Or increase the delay on the less desireable switch interface, that'll affect the FD and all downstream routers/switches participating in EIGRP. Just don't increase it so much to the point that they won't consider it. Bump it like 200ms

[rmcdaniels]

=-']Or increase the delay on the less desireable switch interface, that'll affect the FD and all downstream routers/switches participating in EIGRP. Just don't increase it so much to the point that they won't consider it. Bump it like 200ms

Bingo. Damn, I hate getting here late for threads like this.