Cisco Cisco Catalyst Blade Switch 3020 for HP White Paper

 

Design Guide 

 

© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. 

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interface GigabitEthernet0/1 
 description <<** BladeServer-1 **>> 
 switchport trunk encapsulation dot1q 
 switchport trunk allowed vlan 10,60 
 switchport mode trunk 
 switchport port-security aging time 20 
 switchport port-security maximum 1 vlan 10,60 
 no cdp enable 
 spanning-tree portfast trunk 
 spanning-tree bpduguard enable 
end 

Server Default Gateway Configuration 
The default gateway for a server is a Layer 3 device located in the aggregation layer of the data 
center. This device can be a firewall, a load balancer, or a router. Using protocols such as HSRP 
protects the gateway from being a single point of failure and creates a highly available data center 
network. HSRP allows the two aggregate switches to act as a single, virtual router by sharing a 
common MAC and IP address between them. Define a SVI on each aggregate switch and use the 
HSRP address as the default gateway of the server farm.  

Configure aggregation 1 as the active HSRP router. The priority command helps to select this 
router as the active router because it has a greater value. 

interface Vlan10 
 description <<** BladeServerFarm – Active **>> 
 ip address 10.10.10.2 255.255.255.0 
 no ip redirects 
 no ip proxy-arp 
 arp timeout 200 
 standby 1 ip 10.10.10.1 
 standby 1 timers 1 3 
 standby 1 priority 51 
 standby 1 preempt delay minimum 60 
 standby 1 authentication <password> 
end 

Configure aggregation 2 as the standby HSRP router as follows:  

interface Vlan10 
 description <<** BladeServerFarm – Standby **>> 
 ip address 10.10.10.3 255.255.255.0 
 no ip redirects 
 no ip proxy-arp 
 arp timeout 200 
 standby 1 ip 10.10.10.1 
 standby 1 timers 1 3 
 standby 1 priority 50 
 standby 1 preempt delay minimum 60 
 standby 1 authentication <password> 
end