automatic switching router interface lan Router 7600

[jhon.paez.28]

hi

I have a Router 7600 connected to port 1 to Switch1 and I want to implement high availability on the same router interface connecting to another switch2 other replicating the same settings I have on port 1, but I do not want to implement HSRP time change state is the interfece 1, the two interface must be in admin down will automatically rise, is there any way?

                   Router

                   |          |

                  S1       S2

Router:

!
interface TenGigabitEthernet1/1
 description CONNECT TO SW1
 no ip address
!
interface TenGigabitEthernet1/1.7
 description RED 1
 encapsulation dot1Q 7
 ip address 10.1.1.65 255.255.255.192
!
interface TenGigabitEthernet1/1.50
 description RED 2
 encapsulation dot1Q 50
 ip address 10.2.2.1 255.255.255.192
!
!
interface TenGigabitEthernet1/2
 description CONNECT TO SW2
 no ip address

 shutdown
!
interface TenGigabitEthernet1/2.7
 description RED 1
 encapsulation dot1Q 7
 ip address 10.1.1.65 255.255.255.192

 shutdown
!
interface TenGigabitEthernet1/2.50
 description RED 2
 encapsulation dot1Q 50
 ip address 10.2.2.1 255.255.255.192

 shutdown
!

[jubair151]

Hi,

You may please use IP SLA to monitor your Te1/1 interface and use EEM script to enable to track the IP SLA and run the command to enable Te1/2 router interface. Below idea may achieve your goal

1) IP SLA to monitor the Te1/1 interfaec

2) Configure the EEM SCRIPT to monitor the IP SLA

         a) If IP SLA fails, invoke commands to enable the Te1/2 interface

         c) If IPSLA success, invoke the commands to disable the Te1/2 Inrterface which will shut the Te1/2 interface and thereby active Te1/1 interface. Means back to your previous setup.

Regards,

Jubair.S

[syed kazim abbas]

Hi Jubair,

No need IP SLA you can use (even syslog patteren " ") command

event manager applet TEST

event syslog pattern"Line protocol on Interface TenGigabitEthernet1/1.7, changed state to down"

action 1.0 cli command "enable"
action 1.1 cli command "configure terminal"
action 1.2 cli command "TenGigabitEthernet1/1.7"
action 1.4 cli command "no ip address"

action 1.5 cli command "TenGigabitEthernet1/2.7"
action 1.6 cli command "no sh"
action 1.7 cli command "encapsulation dot1Q 7" 

action 1.8 cli command "ip address 10.1.1.65 255.255.255.192"

[jubair151]

Hi Syed,

yes, we can use log pattern also. In a short, EEM script has to chceck the interface status and do the action as per our requirement.

Regards,

Jubair.S

[syed kazim abbas]

Hi Jhon,

One way is which described by Jubair , there is another way:

1) Make a stack of two switches

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-3750-series-switches/69979-cross-stack-etherchannel.html

2)Make ether-channel on router and on stack end

http://www.cisco.com/c/en/us/support/docs/switches/catalyst-2950-series-switches/24042-158.html

Then your topology will be redundant.

HTH

Kazim