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Ankur
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List the 2 classful routing protocols and explain the most serious limitation of these two protocols?
IGRP and RIPv1
Is OSPF a classful or classless link-state routing protocol?
OSPF is a classless link-state routing protocol. RIP version 1 and IGRP are both classful distance vector routing protocols, EIGRP is a hybrid protocol that supports classless addressing.
What three ways are the routing table populated?
1. Do it yourself. 2. Don't do it yourself. 3. Don't have a routing table.
How is IGRP similar to RIP?
Interior Gateway Routing Protocol (IGRP) IGRP is a distance-vector interior gateway protocol (IGP). Distance-vector routing protocols call for each router to send all or a portion of its routing table in a routing-update message at regular intervals (every 90 seconds) to each of its neighboring routers. As routing information proliferates through the network, routers can calculate distances to all nodes within the internetwork. IGRP uses a combination (vector) of metrics. Internetwork delay, bandwidth, reliability, and load are all factored into the routing decision. Network administrators can set the weighting factors for each of these metrics. IGRP uses either the administrator-set or the default weightings to automatically calculate optimal routes.Routing Information Protocol (RIP) The Routing Information Protocol (RIP) is a distance-vector protocol that uses hop count as its metric. RIP is widely used for routing traffic in the global Internet and is an interior gateway protocol (IGP), which means that it performs routing within a single autonomous system. RIP only uses hop count to determine the best route to a remote network, RIP has a maximum hop count of 15, 16 is deemed unreachable. RIP works well in small internetworks, but is inefficient for large networks. RIP is susceptible to all the problems normally associated with distance vector routing protocols. It is slow to converge and forces routers to learn network information only from neighbors. RIP version 1 uses classful routing (all devices in the network must use the same subnet mask because RIP version 1 doesn't send updates with subnet information). RIP version 2 uses classless routing and does send subnet mask information with route updates. RIP networks need the same hop count to load balance multiple links.
What type of routing uses information that is manually entered into the routing table?
what type of static route does the administrator configure
What info does show ip route igrp provide?
Provide information about the complete IP routing table .
The igrp protocol is a which protocol?
IGRP is Interior Gateway Routing Protocol, enhanced by Cisco proprietary Enhanced IGRP.
What sends entire routing table to all routers at a schedule time?
It is typical for older routing protocols of the "distance vector" type, such as RIP, or IGRP, to send out their routing tables regularly to neighbors. By default, RIP does this every 30 seconds, while IGRP does it every 90 seconds.
Which command displays a summary of IGRP routing activity?
- debug ip igrp events
Which command displays summay information of IGRP routing messages?
debug ip igrp events
Why is IGRP no longer supported on the new Cisco IOS?
EIGRP (Enhanced IGRP) has replaced IGRP. With the way EIGRP is set up as a protocol it is possible to implement a newer router that only supports EIGRP into a network that is running IGRP. Honestly network admins should be pushing for EIGRP if they are still on IGRP as for many features and advantages EIGRP has over IGRP. Directly from Cisco.com: "Enhanced IGRP provides compatibility and seamless interoperation with IGRP routers. An automatic-redistribution mechanism allows IGRP routes to be imported into Enhanced IGRP, and vice versa, so it is possible to add Enhanced IGRP gradually into an existing IGRP network." EIGRP:Enhanced Interior Gateway Routing Protocol IGRP: Interior Gateway Routing Protocol *IGRP and EIGRP are both Cisco proprietary routing protocols.
What three routing protocols are distance vector routing protocols?
Routing Information Protocol (RIP) and Interior Gateway Routing Protocol (IGRP) are two very popular Distance Vector routing protocols
When should distance vector routing be used?
Distance vector routing is used when the network is simple and has no hierarchical design. Examples of distance vector routing protocols are RIP and IGRP.
What is the purpose of the variance multiplier element of the igrp routing command?
It configures unequal-cost load balancing
What is the purpose of the variance muliplier element of the igrp routing command?
it configures unequal-cosst load balancing.
List the 2 classful routing protocols and explain the most serious limitation of these two protocols?
IGRP and RIPv1
Which routing protocol is cisco proprietary?
IGRP - Interior Gateway Routing Protocol EIGRP- Enhanced Interior Gateway Routing Protocol
