10-26-2009 11:14 PM - edited 03-06-2019 08:18 AM
Hi All,
I have cisco 2821 Router with 2 fastEthernet module. One port connected to my LAN and other port to ISP-Modem
We got another Internet link over Ethernet. Apart from purchasing Ethernet module do I have any other Options.
10-26-2009 11:37 PM
Another option is to configure the LAN connecting port on 2821 as trunk port and connect the new internet link to the switch connected to the port. Create another Vlan for internet link and enable the inter-vlan routing for routing traffic to that internet.
http://www.cisco.com/en/US/docs/switches/lan/catalyst5000/hybrid/routing.html#wp43662
HTH,
-amit singh
10-27-2009 12:30 AM
Great Help, Do I need a static route to second Internet-link.
switch
=======
vlan 10
name NET1
vlan 11
name NET2
interface FastEthernet0/24
switchport trunk native vlan 100
switchport trunk allowed vlan 10-11
switchport mode trunk
interface FastEthernet0/1
switchport access vlan 10
switchport mode access
interface FastEthernet0/2
switchport access vlan 11
switchport mode access
interface Vlan1
ip address 192.166.255.1 255.255.255.248
ip default-gateway 192.166.255.2
---------------------------------------------
Router
======
interface FastEthernet0/0
ip address 10.0.0.1 255.255.255.0
duplex auto
speed auto
interface FastEthernet0/1
no ip address
duplex auto
speed auto
!
interface FastEthernet0/1.1
encapsulation dot1Q 1
ip address 192.166.255.2
interface FastEthernet0/1.10
encapsulation dot1Q 10
ip address 80.98.15.3 255.255.255.240
interface FastEthernet0/1.11
encapsulation dot1Q 11
ip address 79.65.3.8 255.255.255.248
router eigrp 2
network 10.0.0.1 0.0.0.255
ip route 0.0.0.0 0.0.0.0 80.98.15.1
Our Final Goal : Establish VPN Tunnel redundancy over Two Internet link to parent-company
10-27-2009 01:41 AM
Yes, create another static route with higher AD to use it as floating static route. somthing like
ip route 0.0.0.0 0.0.0.0 x.x.x.1 200
This would make sure that one your primary link/route goes down the secondary route/link will be used for routing the traffic and have the VPN tunnel kicked in using the standby link.
10-27-2009 02:13 AM
Eigrp do support load balancing on unequal bandwidth. Does it works similar for Gre Tunnels with IPSEC.
10-27-2009 02:22 AM
Joe,
It should would the same way. I have used EIGRP with DMVPN and works well for load-balancing.
Make sure that in your crypto map you have the peer destination as a loopback IP for VPN tunnel redundancy.
http://www.cisco.com/en/US/tech/tk583/tk372/technologies_configuration_example09186a008009438e.shtml
Also, let us know if you have the redundant link terminating at central site on a single router or on a secondary/redundant router.
HTH,
-amit singh
10-27-2009 03:00 AM
Amit,
I am following the same example you send me but it has twist.
Hub for now will be Single head with one Service provider. Next week will get another Internet Link from different service provider terminating on Different router.
Spokes already have two Service provider.
Load Balancing from Spoke end should work with Two Tunnels terminating the Hub from different service provider.
For Spoke with Two Service Provider do I still need to add floating routes ip route 0.0.0.0 0.0.0.0 SP2
10-27-2009 04:01 AM
you need it in order to reach or forward the traffic to ISP. You dont need the route if you are running a routing protocol with ISP. You have to configure the second default route without any higher AD i.e not making it floating route in order to have traffic forwarded to both the ISP's simultaneously.
Once you have both the GRE tunnels up and the destinations are listed in the routing table the load-balancing should work. Make sure that you advertise the routes in EIGRP process on both the routers.
10-27-2009 05:38 AM
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