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Serial link cisco

Posted on 2004-09-20
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Last Modified: 2010-04-17
Hello,

I am new on cisco routers and have a question.

I have 2 routers connected with 2 seriallinks. I want to dedicate one of the seriallinks for 2 machines on each side of the routers.
The machines are two servers running a database.

                   /serial \
  machine - cisco ---       --- cisco - machine
                   \serial /

Is there i easy way to solve this?
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Question by:martyboy
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Expert Comment

by:lrmoore
ID: 12101753
use policy routing with a route-map

Use an access-list that matches the traffic that you want to route, ie.
 access-list 101 permit ip host1 host2
 route-map TEST
 match ip address 101
 set interface serial x

interface Ethernet 0
 ip policy route-map TEST

Mirror the configs on both sides.

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Expert Comment

by:lrmoore
ID: 12101755
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Author Comment

by:martyboy
ID: 12101865
ok, thx

So this should do it?


access-list 101 permit ip 192.168.1.9 192.168.0.99
route-map licencia
match ip address 101
set interface serial 0/1

interface Fastethernet 0/0
 ip policy route-map licencia
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LVL 79

Expert Comment

by:lrmoore
ID: 12101942
>access-list 101 permit ip 192.168.1.9 192.168.0.99

you need the "host" keyword in the acl

access-list 101 permit ip host 192.168.1.9 host 192.168.0.99
                                    ^^                     ^^

And be sure that there is a mirror-image of this config on the other router..
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Author Comment

by:martyboy
ID: 12102702
One last stupid question. I assume that you have to switch the order of the hosts in the access-list statement

is this right?

router1

access-list 101 permit ip host 192.168.1.8 host 192.168.0.9
route-map licencia
match ip address 101
set interface serial 0/1

interface Fastethernet 0/0
 ip policy route-map licencia

router2
access-list 101 permit ip host 192.168.0.9 host 192.168.1.8 ip
route-map licencia
match ip address 101
set interface serial 0/1

interface Fastethernet 0/0
 ip policy route-map licencia
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Accepted Solution

by:
lrmoore earned 250 total points
ID: 12102774
Yes. The syntax would be

access-list 101 permit ip host <local host> host <remote host>

>access-list 101 permit ip host 192.168.0.9 host 192.168.1.8 ip <== no "ip" at the end..
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Author Comment

by:martyboy
ID: 12103440
Thanks mate!

Here are your points!
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Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

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