[c-nsp] 6500 Rate-Limiting for Server Colocation

[Simon Allard]

Hi Guys

 

Currently we are running 7513's with RSP4's and VIP4-80's and are looking
for upgrade to 6500-SUP720-3BXL's. In theory it should be a nice upgrade,
but want to make sure they are going to suit the task before parting with
the cash.

 

What we do is do policy-maps which rate limit based on DSCP bits inbound and
QoS groups for outbound traffic.

 

For example:

 

We match traffic inbound to the customer based on DSCP bits and outbound
traffic is matched using QoS groups which looks at BGP communities to see if
it's international or domestic traffic.

 

policy-map CUSTOMER-SIMON-INBOUND

  class CUSTOMER-SIMON-INT-INBOUND

    shape average 512000 2048 2048

    random-detect

  class CUSTOMER-SIMON-DOM-INBOUND

    shape average 2048000 8192 8192

    random-detect

policy-map CUSTOMER-SIMON-OUBOUND

  class CUSTOMER-SIMON-INT-OUTBOUND

    shape average 512000 2048 2048

    random-detect

  class CUSTOMER-SIMON-DOM-OUTBOUND

    shape average 2048000 8192 8192

    random-detect

 

 

interface Gi1/0/1.100

bandwidth 10000

 encapsulation dot1Q 100

 ip address 10.1.1.1 255.255.255.0

 no ip redirects

 no ip proxy-arp

 bgp-policy destination ip-qos-map

 no snmp trap link-status

 no cdp enable

 service-policy input CUSTOMER-SIMON-OUTBOUND

 service-policy output CUSTOMER-SIMON-INBOUND

 

 

 

What sort of Gotha's am I going to expect when migrating from a 7500 to a
6500. The 7500's do the rate-limiting on the VIP's which is great, but am I
going to end up with CPU problems doing a lot of this type of rate-limiting
on the 6500's?

 

 

Simon Allard 

Maxnet - AS9889

 

P: +64 9 913 9997

M: +64 21 622 717

E: simon.allard at maxnet.co.nz