HA Load-balancing with IP Anycast Nowadays, having a load-balancer in datacenters is more and more crucial not only to assure an easy scalability but also to assure high availability (HA). If properly configured, the load-balancer will be able to detect a failed application server, will remove it from its resource pool and will eventually reassign [...]
By default, IOS sends BGP messages to EBGP neighbors with an IP time-to-live (TTL) of 1. (This can be adjusted with ebgp-multihop attached to the desired neighbor or peer group under BGP configuration.) Sending BGP messages with a TTL of one requires that the peer be directly connected, or the packets will expire in transit. [...]
Border Gateway Protocol (BGP) Parameters Last Updated 2012-02-21 This registry is also available in plain text. Registries included below BGP Message Types BGP Path Attributes BGP Error Codes BGP Error Subcodes Message Header Error subcodes OPEN Message Error subcodes UPDATE Message Error subcodes BGP Cease NOTIFICATION message subcodes BGP Outbound Route Filtering (ORF) Types BGP [...]
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Internetworking Technology Handbook Internetworking Basics Introduction to LAN Protocols Introduction to WAN Technologies Bridging Basics Routing Basics Network Management Basics Ethernet Fiber Distributed Data Interface (FDDI) Token Ring/IEEE 802.5 Frame Relay High-Speed Serial Interface (HSSI) Integrated Services Digital Network (ISDN) Overview [...]
Some links below may open a new browser window () to display the document you selected. RFC RFC 2973 – IS-IS Mesh Groups RFC 2966 – Domain-wide Prefix Distribution with Two-Level IS-IS RFC 2763 – Dynamic Hostname Exchange Mechanism for ISIS RFC 2545 – BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing RFC 2439 – BGP [...]
TECHNOLOGY SUPPORT IP IP ROUTING TECHNOLOGY INFORMATION Technology Briefs Technologies Digests Technology Q&A Technology White Paper BGP BGP Case Studies EIGRP Bidirectional Forwarding Detection for EIGRP Cisco IOS EIGRP For Managed Services in MPLS VPN PE-CE Operation (PDF - 110 KB) Cisco Nonstop Forwarding for EIGRP EIGRP Stub Router Functionality Enhanced Interior Gateway Routing Protocol IGRP An Introduction [...]
Server Load Balancing and its Benefits Server load balancing is the process of distributing service requests across a group of servers. This addresses several requirements that are becoming increasingly important in networks: Increased scalability High performance High availability and disaster recovery Many content-intensive applications have scaled beyond the point where a single server can provide [...]
Default Administrative Distances Default Administrative Distances Route Source Default Distance Connected interface 0 Static route 1 EIGRP summary route 5 External BGP 20 Internal EIGRP 90 Open Shortest Path First (OSPF) 110 Intermediate System-to-Intermediate System (IS-IS) 115 Routing Information Protocol (RIP) 120 EIGRP external route 170 Internal Border Gateway Protocol (BGP) 200 Unknown 255
