need assisstance to configure hsrp on 7206 xvr router 1

[lorenzobalan]

Hi all,

I urgently need assisstance to configure hsrp on two 7206 xvr router. My intention is to configure rendundancy in case of a failure.

|------7206xvr----|
| |
Ethernet |-----ATM
Internet | |
| |
|------7206xvr----|


Your assisstance is greatly appreciated.

 

[NTPeave]

The command you need is: standby ip
It sounds like you need to do a bit of reading - just turning it on won't necessarily solve all your problems. Try the link below (at end of post)
Here's what Cisco.com has to say about the command:

To activate the Hot Standby Router Protocol (HSRP), use the standby ip command in interface configuration mode. To disable HSRP, use the no form of this command.

standby [group-number] ip [ip-address [secondary]]

no standby [group-number] ip [ip-address]

Syntax Description
group-number
(Optional) Group number on the interface for which HSRP is being activated. The default is 0.

ip-address
(Optional) IP address of the Hot Standby router interface.

secondary
(Optional) Indicates the IP address is a secondary Hot Standby router interface. Useful on interfaces with primary and secondary addresses; you can configure primary and secondary HSRP addresses.

Defaults
The default group number is 0
HSRP is disabled by default.

Command Modes
Interface configuration

Command History
Release Modification
10.0
This command was introduced.

10.3
The group-number argument was added.

11.1
The secondary keyword was added.

Usage Guidelines
The standby ip command activates HSRP on the configured interface. If an IP address is specified, that address is used as the designated address for the Hot Standby group. If no IP address is specified, the designated address is learned through the standby function. For HSRP to elect a designated router, at least one router on the cable must have been configured with, or have learned, the designated address. Configuring the designated address on the active router always overrides a designated address that is currently in use.

When the standby ip command is enabled on an interface, the handling of proxy ARP requests is changed (unless proxy ARP was disabled). If the Hot Standby state of the interface is active, proxy ARP requests are answered using the MAC address of the Hot Standby group. If the interface is in a different state, proxy ARP responses are suppressed.

When group number 0 is used, no group number is written to NVRAM, providing backward compatibility.

Examples
The following example activates HSRP for group 1 on Ethernet interface 0. The IP address used by the Hot Standby group will be learned using HSRP.

interface ethernet 0

standby 1 ip


In the following example, all three virtual IP addresses appear in the ARP table using the same (single) virtual MAC address. All three virtual IP addresses are using the same HSRP group (group 0).

ip address 1.1.1.1. 255.255.255.0

ip address 1.2.2.2. 255.255.255.0 secondary

ip address 1.3.3.3. 255.255.255.0 secondary

ip address 1.4.4.4. 255.255.255.0 secondary

standby ip 1.1.1.254

standby ip 1.2.2.254 secondary

standby ip 1.3.3.254 secondary

For more info, start here:

http://www.cisco.com/en/US/customer...logies_tech_note09186a0080094a91.shtml#hsrpop

 

[lorenzobalan]

Hi NTPeave,

help me here, I read the articles and followed up various lead in respect to HSRP. Everything seems quite straight forward in configuring the 7206xvr , butI don't seem to find anything in respect to configureing the network behind it. In my case its an ATM network.


|-----ATM(Cisco 6260)
|------7206xvr----|-----ATM(Cisco 6260)
Ethernet |-----ATM(Cisco 6260)
Internet |-----ATM(Cisco 6260)




This is my actual configuration.
Don't I also need to do configurations on the Cisco 6260's?

Thanks Much

 

[NTPeave]

Yes you may need to change the config slightly on your 6260's to take advantage of using HSRP.
Imagine your current (single?) 7206 uses an ATM interface address of 10.0.0.1/24 and your 6260's use, say, 10.0.0.2, 10.0.0.3, 10.0.0.4 and 10.0.0.5 respectively. I assume your current configs on the 6260's has a static route or some other default/dynamic routing to your 7206 - 10.0.0.1 in this example.
You can immediately configure an unused address in that range as a standby. For example, on the 7206:
conf t
interface xxxx (whatever your ATM interface is)
standby ip 10.0.0.100

Now you can change your static route etc on the 6260's to point to 10.0.0.100 instead of 10.0.0.1
This process should give you an almost hitless migration/testing path, by the way. That is, you should be able to configure "standby ip 10.0.0.100" on the 7206 and be able to ping etc the new address of 10.0.0.100 from the 6260's to give yourself confidence that it will work before you point the static route etc to .100

When you add your second 7206, if you haven't already, you can configure its ATM interface with an address of, say, 10.0.0.6 and also enter the same HSRP command as above:
standby ip 10.0.0.100 on the ATM interface.

Because all of your 6260's are no longer looking for "10.0.0.1", but are now looking for "10.0.0.100", whichever 7206 is the elected router will respond. If it dies, the other takes over.

Do the same on the Ethernet side.