GSS 1.2 and Network Proximity

[yves.haemmerli]

Hi,

What is the Cisco position when it comes to choose the best site, based on network proximity with a GSS? The GSS version 1.2 allows Boomerang/CRA and the new network proximity method that uses DRP.

Question : Which one is the preferred method ?

I designed an international distributed Data Center network that uses Boomerang and I am evaluating replacement of this protocol with the DRP method.

Here are my concerns with both methods :

Boomerang : The address spoofing used by the CRAs to respond to the client generated a lot of problems during deployment. First, firewalls must be configured to allow adress spoofing for the GSS address, then the ISP have to disable their anti-spoofing ACL in the entry points where CRA are installed.

Proximity with DRP : I have some thoughts if the provider hosting the proxy-DNS disallows ICMP or TCP probing from the DRP agents on their DNS servers

Can you give me some comments on this ?

Thank you

Yves

[vkapoor5]

Both have some advantages in their features .I just compare both BCP and DRP. The DRP allows global load-balancing devices to share BGP and IGP routing information for optimal global load-balancing performance and the Boomerang Control Protocol (BCP) allows the Content Router 4400 and boomerang agents to perform highly accurate global server selection. This advanced selection technology reacts within seconds to network congestion, down links, malfunctioning, or overloaded servers. The boomerang system scales to very large numbers of nodes and is very simple to configure and monitor.

The below link provide you more related information about BCP and DRP.

http://www.cisco.com/en/US/products/hw/contnetw/ps777/products_white_paper09186a0080091d9c.shtml