ahmed_saleh Mon, 08/11/2008 - 11:04

Ok thanks but I need to tell you my router have tow interfaces

S1/0 connected to ISP1

S1/1 connected to ISP2

ISP1 support us with 6MB

ISP2 support us with 8MB


I need to aggregate 6MB+8MB = 14 MB



And I have 1 ip in each Serial interface I can't use virtual template interface or Interface Dialer


Did you have anther solution?


Giuseppe Larosa Mon, 08/11/2008 - 11:18

Hello Ahmed,

in this case I would suggest to use load-balancing at layer 3 but Bandwidths are different on the two links.

You should use FR subifs 4 on link 1 and 3 on link 2, then increase the maximum-paths to 7 on your routing protocol (if possible)

Otherwise you should use EIGRP with variance for unequal load-balancing but I don't think you are using it with your providers

I don't think you can aggregate them.

What routing protocol do you use with your two providers ?


Hope to help

Giuseppe

ahmed_saleh Mon, 08/11/2008 - 12:34

Sorry I am running dynamips to share what I will do this is not a rally configuration

________________________________________________________________


Rack1R2(config-subif)#do show run int f 0/0.1

Building configuration...


Current configuration : 194 bytes

!

interface FastEthernet0/0.1

encapsulation dot1Q 10

ip address 192.168.1.2 255.255.255.0

no snmp trap link-status

standby 1 ip 192.168.1.254

standby 1 priority 150

standby 1 preempt


Rack1R4(config-subif)#do show run int e 0/0.1

Building configuration...


Current configuration : 147 bytes

!

interface Ethernet0/0.1

encapsulation dot1Q 10

ip address 192.168.1.4 255.255.255.0

no snmp trap link-status

standby 1 ip 192.168.1.254



1 then I will configure anther 2 vlan like these steps

2 I will configure NAT

3 it's the critical point for me aggregation the link in tow serial interface in eche router


4 if you have complete configuration please post it for me




Attachment: 
Giuseppe Larosa Wed, 08/13/2008 - 06:17

Hello Ahmed,

if you need to use NAT the best strategy is to use two pools one provided by ISP1 and one used by provider2.

At the routing level I would suggest to use the slower link as a backup.


hope to help

Giuseppe


ahmed_saleh Mon, 08/11/2008 - 13:31

please I need response about this configuration just I am use this to share what I will do in the network I am not share a task for study but I will make this configuration in real environment

Giuseppe Larosa Mon, 08/11/2008 - 10:50

Hello Ahmed,

the most common option is multilink PPP

you can follow this example:


int ser1/0

no ip address

enc ppp

ppp multilink 1


int ser1/1

no ip address

enc ppp

ppp multilink 1


interface multilink1

enc ppp

ppp multilink 1

ip address x.x.x.1 255.255.255.252


the configuration needs to be replicated on the other side's router using x.x.x.2 as the ip address.


use the following link as a reference


http://www.cisco.com/en/US/docs/ios/qos/configuration/guide/mlppp_over_serial.html


Hope to help

Giuseppe


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