06-29-2010 11:44 AM - edited 03-04-2019 08:55 AM
Dear All Experts,
Please find the topology shown in attached jpg. It also include the configuration.
Now I need to implement redundancy between tweo ISP i.e TATA and Airtel.
Both Link is terminated on two different ISP.
My Questions are:
1. How to configure HSRP or VRRP to select one ISP? - Primary is TATA and Secondary is AIrtel.
2. How to configure so that Both Link is active but Load sharing using HSRP or VRRP.
3. If TATA all 3 link is goes down than Traffic is diverted to Airtel link. But Airltel link is only 4 MBPS . SO I need to pass only selected traffic. How This is possible?
4. ANy Suggation in this config.
Please do the needful. Its very helpful for me.
Congiuration:
TATA link ROuter :
interface GigabitEthernet0/1
description *** Tata MPLS Link ***
bandwidth 30720
ip address 1.1.55.46 255.255.255.252
interface FastEthernet0/1/0
description ***Tata MPLS Link ***
bandwidth 16384
ip address 1.1.5.19 255.255.255.252
interface FastEthernet0/3/0
description ***Tata MPLS Link ***
bandwidth 16384
ip address 1.1.4.18 255.255.255.248interface GigabitEthernet0/0
description ***Local LAN***
ip address 10.0.150.250 255.255.255.0
router bgp 65000
bgp log-neighbor-changes
neighbor 1.1.5.17 remote-as 4000
neighbor 1.1.4.17 remote-as 4000
neighbor 1.1.55.45 remote-as 4000
maximum-paths 3
!
network 10.0.150.0 mask 255.255.255.0
network 10.0.134.0 mask 255.255.255.0
network 10.0.136.0 mask 255.255.255.0
network 10.0.139.0 mask 255.255.255.0
network 10.0.140.0 mask 255.255.255.0
network 10.0.141.0 mask 255.255.255.0
network 10.0.142.0 mask 255.255.255.0
ip route 10.0.134.0 255.255.255.0 10.0.150.100
ip route 10.0.136.0 255.255.255.0 10.0.150.100
ip route 10.0.139.0 255.255.255.0 10.0.150.100
ip route 10.0.140.0 255.255.255.0 10.0.150.100
ip route 10.0.141.0 255.255.255.0 10.0.150.100
ip route 10.0.142.0 255.255.255.0 10.0.150.100
Airtel Link Router:
interface FastEthernet0/0
description ***Local LAN ***
ip address 10.0.150.241 255.255.255.0
interface FastEthernet0/1
description *****Airtel MPLS Link ****
bandwidth 4096
ip address 10.10.10.90 255.255.255.252
router bgp 64000
bgp log-neighbor-changes
neighbor 10.10.10.89 remote-as 9700
network 10.0.150.0 mask 255.255.255.0
network 10.0.134.0 mask 255.255.255.0
network 10.0.136.0 mask 255.255.255.0
network 10.0.139.0 mask 255.255.255.0
network 10.0.140.0 mask 255.255.255.0
network 10.0.141.0 mask 255.255.255.0
network 10.0.142.0 mask 255.255.255.0
ip route 10.0.134.0 255.255.255.0 10.0.150.100
ip route 10.0.136.0 255.255.255.0 10.0.150.100
ip route 10.0.139.0 255.255.255.0 10.0.150.100
ip route 10.0.140.0 255.255.255.0 10.0.150.100
ip route 10.0.141.0 255.255.255.0 10.0.150.100
ip route 10.0.142.0 255.255.255.0 10.0.150.100
06-29-2010 12:09 PM
1. How to configure HSRP or VRRP to select one ISP? - Primary is TATA and Secondary is AIrtel.
With HSRP, you'll use 3 addresses: 2 physical and 1 virtual. Virtual is the gateway that users/devices will use.
On TATA Router inside interface:
standby 100 ip
standby 100 priority 105 <-- this will make this link primary
standby 100 preempt
standby 100 track
On Alrtel router:
standby 100 ip
standby 100 ip preempt
2. How to configure so that Both Link is active but Load sharing using HSRP or VRRP.
Only with GLBP for load balancing. Otherwise, you'll need to set your half your clients to use the physical address of TATA link and the other half to use physical address of Alrtel link for "load balancing." HSRP and VRRP is only a standby protocol. GLBP will load balance in round-robin method.
3. If TATA all 3 link is goes down than Traffic is diverted to Airtel link. But Airltel link is only 4 MBPS . SO I need to pass only selected traffic. How This is possible?
You'll need to use QoS and prioritize/block traffic that you don't want to go over that link. Something like:
class-map NOWEB match-all
match ip protocol http
policy-map OUTBOUND
class NOWEB
drop
int
service-policy output OUTBOUND
The above is VERY rough and from memory, but it would drop all traffic that matches http (web traffic).
**** Please rate all helpful posts ****
HTH,
John
06-29-2010 05:51 PM
Dear John,
Thanks for the reply.
Yes that is good. But I am confusing as on TATA Link Router as shown in Topology there are 62 MB link terminated using 3 diffferent Physical Ports.
In this case how should I proceed. I can not go for multilink option here.
Pls suggest how I will configure HSRP/VRRP/GLBP?
Regards,
06-29-2010 12:12 PM
HSRP or VRRP are primarily for redundancy not for load balancing. If you want both redundancy and load balancing try configuring GLBP (gateway load balancing protocol)
thanks
06-30-2010 03:31 AM
In HSRP and VRRP, if you want to do the load balancing then you need to create two virtual groups.
regards
shivlu jain
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