distance vector routing protocol example ppt

... Gateway Routing Protocol (EIGRP) ● AS number of the destination ● Configurable administrator tag ● ID of the external protocol ● Metric from the external protocol ● Bit flags for default routing Route ... to make routing decisions, the results of which are stored in the IP routing table. IP-Enhanced IGRP is responsible for redistributing routes learned by other IP routing protocols. Routing Concepts Enhanced ... learned from the Routing Table Maintenance Protocol (RTMP). The IP implementation redistributes routes learned from OSPF, Routing Information Protocol (RIP), IS-IS, Exterior Gateway Protocol (EGP),...

Ngày tải lên: 18/01/2014, 05:20

... Gateway Routing Protocol (EIGRP) As internetworks grew in scale and diversity in the early 1990s, new routing protocols were needed. Cisco developed Enhanced Interior Gateway Routing Protocol ... the most popular routing protocols among network engineers. EIGRP can be referred to as a hybrid protocol. It combines most of the characteristics of traditional distance vector protocols with ... Gateway Routing Protocol (EIGRP) Technical Overview of EIGRP EIGRP offers many advantages over other routing protocols, including the following: ã Support for VLSM —EIGRP is a classless routing...

Ngày tải lên: 24/01/2014, 19:20

... to: ã Describe the features offered by distance vector routing protocols and give examples of each ã Describe the issues associated with distance vector routing and identify solutions to those ... v2.05-26 Summary ã Distance vector- based routing algorithms (also known as Bellman-Ford algorithms) pass periodic copies of a routing table from router to router. ã When the topology in a distance vector protocol ... router. Maintaining Routing Information â 2002, Cisco Systems, Inc. All rights reserved. ICND v2.05-4 ã Routers pass periodic copies of routing table to neighbor routers and accumulate distance vectors. Distance...

Ngày tải lên: 17/02/2014, 08:20

... where routing policies are configured. That’s no big surprise – with IOS, because of its multiprotocol nature, each routing protocol implements its own routing policy pro- cessing as part of the protocol s ... between the protocols – there is a defined “choke point” where all protocols install their routing information, which is the main unicast routing table inet.0. So for each protocol one or more routing ... router log a line in the specified file. Each routing protocol has different flags: BGP has different traceoption flags to IS-IS, and so on, since routing protocols can work in fundamentally different...

Ngày tải lên: 02/07/2014, 20:21

... mid-1980s routing protocols are required to operate and scale on broadcast cir- cuits like Ethernet. Broadcast networks allow multiple devices to see each other. For link-state routing protocols ... this makes sure that not more than 50 per cent (for example) of the configured interface Bandwidth is dedicated to the routing protocol. This example sets the total bandwidth available for IS-IS ... protocol information like IP addresses. The pseudonode can be seen as a protocol independent node which only carries IS-Reach and optional authentication information. Arguably the notion of protocol...

Ngày tải lên: 02/07/2014, 20:21

... Particularly during routing protocol migrations (for example from EIGRP to IS-IS) it may be the case that the other routing protocol is still masking the routes from the new routing protocol. A modification ... other routing protocols like BGP. However, in IOS, for example, external BGP paths have an administrative dis- tance, which has a route preference of 20 versus an IS-IS route that ranks only at distance 115 ... Troubleshooting OK OK OK Troubleshooting Start Problem resolved Verify Interface Config Verify Adjacency Table Verify IPv4/IPv6/OSI Protocol Config Verify Topology Config Verify Link-State Database Verify Protocol Preference Config Verify SPF results Verify Authenti- cation Config Verify IP Routing Table 1 2 3 4 FIGURE...

Ngày tải lên: 02/07/2014, 20:21

... common routing and signalling protocol. The common routing protocol could be enhanced versions of IS-IS or OSPF. It is the authors’ opinion that IS-IS finally will prevail as the routing protocol ... Capability Vector Sub-TLV #1 which con- tains the one set bit per supported capability 516 17. Future of IS-IS Intra-domain Routing Protocol Discriminator Header Length Indicator Version /Protocol ... should a routing protocol really carry? This a good question especially when there is non -routing and non-topology data involved. 17.7 Conclusion The further extension of the IS-IS protocol is...

Ngày tải lên: 02/07/2014, 20:21

... the configuration file are propagated to the routing processes that “speak” router-to-router protocols like OSPF or IS-IS or Border Gateway Protocol (BGP). If the same routing protocol is provisioned on both ... selection algorithms. The com- mon path selection algorithms are various forms of least-cost routing. Each routing protocol defines a set of metrics, and if there is more than one next hop with equal metrics, ... housekeeping and merged the base functions of the two protocols in one “tree”. This rewriting work was the springboard for one of the most respected IGP routing protocol engineers in the world. Cisco Systems...

Ngày tải lên: 03/07/2014, 19:20

... Interface [edit] hannes@Frankfurt# edit protocols isis [edit protocols isis] hannes@Frankfurt# The context displayed between the brackets changes to the protocols isis context. Imagine the configuration ... configuration file at this context level and all levels below: [edit protocols isis] hannes@Frankfurt# show interface so-3/0/0.0 { checksum; } [edit protocols isis] Don’t get scared by the curly braces. They ... (plus more curly braces) from the top-level perspective: [edit protocols isis] hannes@Frankfurt# top [edit] hannes@Frankfurt# show [ … ] protocols { isis { interface so-3/0/0.0 { checksum; } } } [...

Ngày tải lên: 03/07/2014, 19:20

... IP routing protocols, the IS-IS configuration file is far smaller. Running natively on Layer 2 of the OSI Reference Model has another important aspect, which is suitability for routing multiple protocols. ... multiplexing several protocols over a single link. First, a protocol called the PPP line control protocol (LCP) opens up the circuit and first negotiates parameters concerning the link. Examples of LCP ... originating protocol is “from” static, then accept that prefix. Note that in the “then” part no detailed action is actually specified for the prefix. This is largely depend- ent on which routing protocol...

Ngày tải lên: 03/07/2014, 19:20

... Leaking Between Levels Every routing protocol passes a certain amount of routing information up the routing hierarchy, and other routing information is passed down the routing hierarchy. There is ... in the Level-1 network. Area Migration Scenarios 91 Intra-domain Routing Protocol Discriminator Header Length Indicator Version /Protocol ID Extension 0x83 Bytes 1 1 1 1 1 1 1 1 1 ID Length PDU ... becomes highly disruptive. Just think about the disruptive nature of migrating an OSPF area, which is a routing protocol that supports just one area address per adjacency. You cannot migrate an OSPF network’s...

Ngày tải lên: 03/07/2014, 19:20

... link-state routing protocols, the implementer needs to make an effort not to over- whelm neighbours with excessive LSP updates. Excessive LSPs might churn the net- work. In typical transport protocols ... under the protocols isis interface <interface-name> configuration hierarchy, as shown in the following: JUNOS software configuration hannes@Frankfurt> show configuration [… ] protocols ... directive under the protocols isis interface <interface-name> configuration hierarchy, as shown in the following: JUNOS software configuration hannes@Frankfurt> show configuration [… ] protocols...

Ngày tải lên: 03/07/2014, 19:20

... mid-1980s routing protocols are required to operate and scale on broadcast cir- cuits like Ethernet. Broadcast networks allow multiple devices to see each other. For link-state routing protocols ... this makes sure that not more than 50 per cent (for example) of the configured interface Bandwidth is dedicated to the routing protocol. This example sets the total bandwidth available for IS-IS ... probably still is. Ironically, in the world of open specifications, there are still barely a dozen routing protocol software engineers who have the necessary experience to get the IS-IS code right the...

Ngày tải lên: 03/07/2014, 19:20

... network protocol is used to convey the applications message as long as the receiver on the other end can de-multiplex the layering of message. The Transmission Control Protocol (TCP) is a good example ... circuit packet be transported? In this chapter you will see some exam- ples how IP and the IS-IS routing protocol solves the underlying problem by chopping messages into pieces and reassembling them ... Control Protocol (TCP) is a good example for this. Figure 9.1 shows an example application like the Simple Mail Transfer Protocol (SMTP). SMTP relies on TCP for doing end-to-end flow control, re-sequencing...

Ngày tải lên: 03/07/2014, 19:20

Ngày tải lên: 03/07/2014, 19:20

Ngày tải lên: 03/07/2014, 19:20

Ngày tải lên: 03/07/2014, 19:20

Ngày tải lên: 03/07/2014, 19:20

Ngày tải lên: 03/07/2014, 19:20

Ngày tải lên: 03/07/2014, 19:20