From: Godswill Oletu (oletu@inbox.lv)
Date: Sat Jun 03 2006 - 16:10:47 ART
Bola,
If your static routes are pointing to a next hop address that is not on the
subnet with any interface on your local router, then floating static routes,
should be fine. At least on the various IOSes that I am running today, a
static route pointing to a next hop address that is unreachable by my local
router is not entered into the routing table.
However, if this is a WAN topology where the remote next hop IP address is
on the same subnet with an interface on your local router, a little research
into static routes with next hop reachability tracking might help.
Sometime like...
!
ip route 200.1.1.1 255.0.0.0 1.1.1.1 10 track 1
ip route 200.1.1.1 255.0.0.0 2.2.2.2 11 track 2
!
track 1 ip route 1.1.1.1/24 reachability
track 2 ip route 2.2.2.2/24 reachability
!
Where, 1.1.1.1 & 2.2.2.2 are the ip address of the remote next hops. If my
syntax are correct, in the above example, 1.1.1.1 will be the primary route
and 2.2.2.2 will be the backup.
HTH
Godswill Oletu
----- Original Message -----
From: "Bola Adegbonmire" <bolaccie@yahoo.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, June 03, 2006 2:17 PM
Subject: Dynamic faiolover of Link
> Hi All,
>
> I have got a client who has a branch office with two different physical
> links back to HQ. Both links are over a shared service provider
> metropolitan area network. Both links are delivered via Ethernet
> interfaces to the branch router (ISR 2811).
>
>
> The client does not use a dynamic routing protocol
> Static routes are in use
> Client requires a solution that will provide dynamic failover between the
> primary and secondary links when the primary is not available. The above
> caveats cannot be changed for now.
>
> Please can anyone help with a solution, considering the peculiarities of
> Ethernet interfaces not detecting the remote end been down as long as the
> local interface is seen as up/up when plugged into a switch port.
>
> Regards,
> Bola
>
>
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This archive was generated by hypermail 2.1.4 : Sat Jul 01 2006 - 07:57:31 ART