[c-nsp] what ip should be in switch?

2009-02-23 Thread chloe K
Hi all
   
  I would like to know what is best way to setup ip in swtich
   
  If the switch ip is not in operation network eg: private ip, I can't see any 
operation ip in the port of the switch by sh arp. it is only showing all arp in 
management network 
   
  If I use this ip as same as operation network, it increases this switch in 
risk
   
  Can you teach me?
   
  Thank you

   
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Re: [c-nsp] what ip should be in switch?

2009-02-23 Thread Jay Hennigan

chloe K wrote:

Hi all
   
  I would like to know what is best way to setup ip in swtich
   
  If the switch ip is not in operation network eg: private ip, I can't see any operation ip in the port of the switch by sh arp. it is only showing all arp in management network 
   
  If I use this ip as same as operation network, it increases this switch in risk


Put the switch management on a secure network, put your customer traffic 
on a different VLAN or combination of VLANs depending on the complexity 
of your network.


For a layer 2 switch, sh arp will only display MAC and IP addresses 
associated with traffic to the switch, not through it.


You can use sh mac-address-table (on some some versions the command is 
sh mac address-table) to identify layer 2 addresses associated with 
traffic going through the switch.


In addition, access-class ACLs on the VTY lines (and snmp and http, if 
you use them) are a good thing to limit management to trusted hosts.


--
Jay Hennigan - CCIE #7880 - Network Engineering - j...@impulse.net
Impulse Internet Service  -  http://www.impulse.net/
Your local telephone and internet company - 805 884-6323 - WB6RDV
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