10-30-2008 10:53 AM - edited 03-04-2019 12:08 AM
I have a 10mb connection to XO with 2 vlans for DIA (direct internet access) and a multisite mesh network. The DIA uses static routing and the MESH uses ebgp. Now we are adding a redundant (diverse path)link for the 10mb Eth connection. I'm not sure how to configure BGP for link failover when I already have bgp for my mesh. Is there a standard answer for this problem or what settings questions should I be asking my ISP?
10-30-2008 09:04 PM
Please explain a bit more and if possible share diagram.
10-31-2008 02:13 PM
To eleborate: I currently have a 10mb ethernet link with two vlans. One vlan is for Internet traffic that XO hands off from their cloud. There is simple static routing pointing a default route to the Internet from us to XO and a route from XO to our assigned /26 address space for web traffic. The second Vlan is for our MPLS\Mesh Network between three sites. We are using BGP for the site to site routing over this vlan.
Now we are adding a second ethernet connection for last mile redundancy. If I didn't have vlans and only had the mesh network I assume I would just have two neighbor statements.
But I have two vlans on the link and they need to remain seperate. I'm thinking of using two network statements for the mesh network and adding a secondary static default route for the DIA link. So if my primary 10mb link fails. The BGP would failover the mesh vlan connectivity and the secondary default route would failover the DIA.
interface FastEthernet0/0/0
description WAN_XO_10meg_port
no ip address
duplex full
speed 10
service-policy output voip
!
interface FastEthernet0/0/0.1535
description ISP_DIA_to_LAN_DMZ
encapsulation dot1Q 1535
ip address
ip nat outside
ip virtual-reassembly
zone-member security outside
no cdp enable
!
interface FastEthernet0/0/0.1536
description ISP_MESH_to_LAN_Inside
encapsulation dot1Q 1536
ip address
no cdp enable
!
interface FastEthernet0/0/1
description future XO failover
no ip address
shutdown
duplex auto
speed auto
router bgp 7014
no synchronization
bgp log-neighbor-changes
network 10.3.0.0 mask 255.255.0.0
network 10.10.0.0 mask 255.255.0.0
network 10.11.0.0 mask 255.255.0.0
network 10.154.0.0 mask 255.255.252.0
neighbor
no auto-summary
!
ip route 0.0.0.0 0.0.0.0
ip route 10.3.0.0 255.255.0.0 10.10.0.139
ip route 10.10.0.0 255.255.0.0 10.10.0.3
ip route 10.11.0.0 255.255.0.0 10.10.0.3
ip route 10.154.0.0 255.255.252.0 10.10.0.1
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I'm thinking this may be a solution ??? <<<<<<<<<<<<<<<<<<<<<
interface FastEthernet0/0/1
description future XO failover
no ip address
interface FastEthernet0/0/1.1535
description DIA FAILOVER LINK
encapsulation dot1Q 1535
ip address
!
interface FastEthernet0/0/1.1536
description MESH FAILOVER LINK
encapsulation dot1Q 1536
ip address
router bgp 7014
neighbor
! -----Failover for Mesh vlan-----
neighbor
ip route 0.0.0.0 0.0.0.0
!----Failover for DIA--------------
ip route 0.0.0.0 0.0.0.0
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