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We have two 7200 Internet routers connected to the internet running BGP. &nbsp;We have two 3750, one connected to each 7200 router. &nbsp;Currently we are using HSRP but would like to implement OSPF in the DMZ to allow redundancy. &nbsp;We elected to not use GLBP...<br />
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We planned to redistribute BGP into OSPF, and OSPF into BGP. &nbsp;However, we are aware the internet routing table can be as large as 25 megabytes in size... way too large for the 128 meg of the 3750 layer 3 switches. &nbsp;Can you provide a sample configuration and explanation of how we can prevent the BGP routes from over subscribing the 3750. &nbsp;I thin we need to use DEFAULT-INFO ORIGINATE &nbsp;command within the OSPF routing protocol route process. &nbsp;Please provide guidance. &nbsp;Much thanks... Chas
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We have two 7200 Internet routers connected to the internet running BGP.  We have two 3750, one connected to each 7200 router.  Currently we are using HSRP but would like to implement OSPF in the DMZ to allow redundancy.  We elected to not use GLBP...

We planned to redistribute BGP into OSPF, and OSPF into BGP.  However, we are aware the internet routing table can be as large as 25 megabytes in size... way too large for the 128 meg of the 3750 layer 3 switches.  Can you provide a sample configuration and explanation of how we can prevent the BGP routes from over subscribing the 3750.  I thin we need to use DEFAULT-INFO ORIGINATE  command within the OSPF routing protocol route process.  Please provide guidance.  Much thanks... Chas

REDISTRIBUTING BGP TO OSPF AND VICE VERSA

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

The Internet Protocol (IP) is the principal communications protocol in the Internet protocol suite for relaying datagrams across network boundaries, organized in abstraction layers, traditionally called "Link," "Internet," "Transport" and "Application”. Its routing function enables internetworking, and essentially establishes the Internet. IP defines packet structures that encapsulate the data to be delivered. It also defines addressing methods that are used to label the datagram with source and destination information.