Cisco switch 4506 active and standby configuration

35 pts.
Tags:
Cisco 4506
Cisco Catalyst 4506 Switch
Cisco switch
Cisco switch configuration
I want to install two 4506 cisco switch to my LAN as core switches one as primary and the other is secondary (failover), and also to do routing to LAN and internet, how can I do that?
ASKED: March 6, 2011  10:30 AM
UPDATED: October 31, 2013  10:26 AM

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Without more information about your network, it will be difficult to give you a direct answer:

1) Do you need BOTH switches to do LAN/Internet routing?
2) When you say “failover”, are you talking about routing failover? or
3) Do you want one active and the other idle untill the primary fails? (Since you mentioned CORE, figured they’d both be up and running at the same time)
4) What services will you be running on your LAN (Data, Voice, etc..)

The more info you give us, the better we can assist you… :)

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  • Santucci4
    Yes the question is a little vague. If you want the fail-over or even fail-over load balancing, then you could use a protocol like HSRP. Create a couple vlan interfaces, as long as you have the proper vlans setup and also your vtp configuration setup as well. under each vlan interface you could have a config like: Switch1#Config t int vlan 10 standby 1 ip 10.10.10.1 standby 1 pri 150 standby 1 preeempt int vlan 20 standby 2 ip 10.10.10.2 standby 2 pri 100 Swithch 2#Config t int vlan 10 standby 1 ip 10.10.10.1 standby 1 pri 100 int vlan 20 standby 2 ip 10.10.10.2 standby 2 pri 150 standby 2 pree What this does is load balance your two switches and if one of the should fail, the other switch will assume control of that gateway. You could also add some more configurations to this for the preempt loading; but just wanted to give you a starter.
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  • Abdelrahman
    thanks alot for your help I will try it
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  • pkpatel1151
    I'd recommend not to make any config changes on switch till you first identify your functional requirements. When considering failover for LAN and Internet as you posted in your question, you have to decide what level of failover do you require. Document function requirements which will drive design resulting in final configuration.
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  • Abdelrahman
    Dear, I want to make the 2 switches as a routers, as well as doing failover, so if one is fail, the other one make the routing to the internet and to the different vlans in the LAN, this what i want to do
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  • Santucci4
    Well, you're still not being technically clear on your network setup. If you want your switches to run as routers, you'll first have to make sure that they are Layer 3 capable switches. If they are L3 capable, you can turn off the switching features of whatever ports you want to use as routed ports by issuing the command "no switchport" in interface mode. You'll have to turn on IP Routing and run whatever routing protocol you choose or just do static routes. For your redundancy, you can use a configuration example like I've given you, utilizing HSRP, or you can choose VRRP or GLBP. I would also recommend to use interface tracking if you're going to have redundant ISP connections as well.
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  • yans112112
    what is meant by PREEEMPT.One more thing in intervlan configuration means we will use 1.VLAN CREATION 2.ASSAINING VLANS TO PORTS. 3.TRUNKING. 4.FINALLY ROUTER CONFIGURATION. but these Santucci4 said intervlan 10,intervlan20..can you please help me no idea about these configuration thats why i am asking.Please dont mind Santucci4 just i got the doubt i want to clear.
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  • Sixball
    The "preempt" command allows the main connection to take the lead, as it were, when it comes back online after a fail-over. And i believe you're confusing "Inter-VLAN" with "INTERFACE VLAN 10" (based on your sentence "intervlan 10,intervlan20") Inter-VLAN means "between VLANS", something completely different from the VLAN Interfaces Santucci Listed...
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  • yans112112
    what is meant by PREEEMPT.One more thing in intervlan configuration means we will use 1.VLAN CREATION 2.ASSAINING VLANS TO PORTS. 3.TRUNKING. 4.FINALLY ROUTER CONFIGURATION. but these Santucci4 said intervlan 10,intervlan20..can you please help me no idea about these configuration th...
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  • Abdelrahman
    So as Santucci4 said, the L3 switch can not work as a switch and a router in the same time, is that right?
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  • Snapper70
    Individual ports can be switchports (default) or routed ports ("no switchport").. If only one port is required as an interface (i.e. to the ISP), then it can be made a routed port. For servers, you probably want to create the VLAN for those ports; put those ports into that vlan, and then route it ("Interface vlan x; ip address.. and mask; no shut").
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