08-09-2008 07:25 AM
we are going to use one arm mode to deploy our CSS 11503, please find the attached picture:
1. should the CSS connect to distribution switch (layer 3, Cat6) or access switch (layer 2)?
2. for the servers need to be balanced, do we need to change the default gateway to CSS?
3. Do we need to configure WCCP on the distribution switch? and is there any other configuration needed for distribution switch?
4. Can i have sample of configuration? thanks!
5. in order to implement redundancy, how can connect 2 CSS 11503 together? via any interface?
08-14-2008 01:23 PM
Yes, you can connect the distribution switch to CSS.
For the configuration and administration of the CSS, follow the guide which will help you :
08-19-2008 08:15 AM
I'll try to answer you questions as asked. Please see this document as well
http://www.cisco.com/en/US/solutions/ns340/ns517/ns224/ns304/net_design_guidance0900aecd8010e7a8.pdf
CSM and CSS are very similar.
Q1:1. should the CSS connect to distribution switch (layer 3, Cat6) or access switch (layer 2)?
A: Depends upon the volume of traffic and if the design requires some traffic not to traverse the CSS.
⢠L3 if you don't want all traffic load balanced.
⢠L2 is fine if the CSS can handle the load of all the traffic.
Access vs distribution is again a traffic flow question & understanding of the location of the servers which require LB.
Q2. for the servers need to be balanced, do we need to change the default gateway to CSS?
A: Technically, no. In a L3 PBR design the router will re-direct the traffic back to the CSS with an appropriately configured ACL.
In an L2 to design, yes.
The third option is to implement source nat on the CSS which will change the source IP to be that of the CSS so return traffic is always sent to the CSS.
Q3: Do we need to configure WCCP on the distribution switch? and is there any other configuration needed for distribution switch?
So WCCP is not required. However in an L3 design PBR might be require (most likely).
Q4: Can i have sample of configuration? Thanks
configure
!*************************** GLOBAL ***************************
! Default Route to upstream router/interface
ip route 0.0.0.0 0.0.0.0 192.168.1.1 1
! Static Route to Customer 01
ip route 10.0.0.0 255.255.255.0 192.168.1.1 1
! Static Route to Customer 02
ip route 10.1.1.0 255.255.255.0 192.168.1.1 1
!************************** INTERFACE **************************
interface e9
bridge vlan 99
!************************** CIRCUIT **************************
circuit VLAN1
circuit VLAN99
! Circuit address of CSS02
ip address 192.168.1.253 255.255.255.0
! Shared Redundant Interface and VIP
ip virtual-router 1 priority 100
ip redundant-vip 1 192.168.1.101
ip redundant-vip 1 192.168.1.102
!************************** SERVICE **************************
service Cust01_01
ip address 10.0.0.101
keepalive type http
keepalive port 80
keepalive uri "/" !grab the root document off the web server
active
service Cust01_02
ip address 10.0.0.102
keepalive type http
keepalive port 80
keepalive uri "/" !grab the root document off the web server
active
service Cust02_01
ip address 10.1.1.101
keepalive type http
keepalive port 80
keepalive uri "/" !grab the root document off the web server
active
service Cust02_02
ip address 10.1.1.102
keepalive type http
keepalive port 80
keepalive uri "/" !grab the root document off the web server
active
!*************************** OWNER ***************************
owner Cust01
content http
vip address 192.168.1.101 !This is the address users will surf to
add service Cust01_01
add service Cust01_02
protocol tcp
port 80
balance leastconn !Use connection count to balance the traffic
active
owner Cust02
content http
vip address 192.168.1.102 !This is the address users will surf to
add service Cust02_01
add service Cust02_02
protocol tcp
port 80
balance leastconn !Use connection count to balance the traffic
active
Q5:
Please see
Just a great CSS doc:
http://www.cisco.com/en/US/products/hw/contnetw/ps792/products_white_paper09186a0080136856.shtml
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