hsrp

[a.kachroo]

hello everyone,

I have two 4507R switches and nine 2950 switches,each 2950 having two fiber ports of which one port is terminated into one 4507R switch and second into another switch.

Again we have configured vlans (1 by default,2,3,4).Now the problem is that i want to implement hsrp,actually i want to know the configuration.

Arun Kachroo

[paddyxdoyle]

Hi,

Using VLAN2 for the example:

4507R-01

Interface VLAN2

ip address 192.168.1.2 255.255.255.0

standby 1 ip 192.168.1.1 255.255.255.0

standby 1 priority 110 preempt

4507R-02

Interface VLAN2

ip address 192.168.1.3 255.255.255.0

standby 1 ip 192.168.1.1 255.255.255.0

standby 1 priority 100 preempt

This would mean that 4507r-02 is the active switch for VLAN2, you can determine this by issuing "show standby brief", the default gateway for VLAN2 is 192.168.1.1.

Have a read through the following link for further info...

http://www.cisco.com/en/US/tech/tk648/tk362/technologies_tech_note09186a0080094a91.shtml

Good luck

Paddy

[paddyxdoyle]

AFTERTHOUGHT: Also, you need to make sure that your VLANs are trunked between your two 4507 switches.

There are other functions you can use with HSRP such as authentication etc, the link i included contains these

Thanks!

Paddy

[a.kachroo]

Thanks for replying so soon,but as u know 2950 switch only support dot.iq encapsulation,so every 2950 switch connecting with 4507R switch is using the same encapsulation.

As i was going through cisco.com,it is written that isl only supports hsrp.can u suggest me on this issue.or i have to use isl when trunking 4507R switches.

Arun Kachroo

[paddyxdoyle]

do1q is fine for HSRP, i've used it extensively and wasn't aware of any trunking limitations with HSRP.