How to
15 which type of route will require a router to perform a recursive lookup Advanced Guides
You are reading about which type of route will require a router to perform a recursive lookup. Here are the best content from the team nguyendinhchieu.edu.vn synthesized and compiled from many sources, see more in the category How To.
Which type of route will require a router to perform a recursive lookup? [1]
Which type of route will require a router to perform a recursive lookup?. – an ultimate route that is using a next hop IP address on a router that is not using CEF
– a level 1 network route that is using a next hop IP address on a router that is using CEF. Explanation: When Cisco Express Forwarding (CEF) is not being used on a router, a recursive lookup must be performed when a route using a next-hop IP address is selected as the best pathway to forward data.
Exam with this question: CCNA 2 (v5.0.3 + v6.0) Chapter 7 Exam Answers
Solved: Recursive Lookup? [2]
Bạn đang xem: 15 which type of route will require a router to perform a recursive lookup Advanced Guides
09-10-2012 02:45 PM – last edited on 04-09-2023 10:01 PM by Translator. Could you all let me know what is Recursive Lookup.
Now if a packet comes to R2 destined for 10.0.2.1 n/w, recursive lookup will be done something like :. I just need to know if this is right and if yes how does this happen.
Well I suppose that the term recursive lookup stands for something different. Now, when a packet arrives with destination IP let’s say 192.168.2.69, router will find out that a suitable route for such packet is static route 192.168.2.0/24 with the next hop IP address 172.16.2.2
Working with recursive static routes – Learning Cisco CLI Router Configuration Video Tutorial [3]
From the course: Learning Cisco CLI Router Configuration. Join today to access over 21,200 courses taught by industry experts or purchase this course individually.
– Next I will demonstrate how to configure a recursive static route on the West router. A recursive static route is used to identify a next hop router where packets will be sent on their path to the intended destination
First the router must check the routing table for the destination network, and then it will try to find an exit interface that points to the next hop router as configured. In this particular topology, the goal is to configure a recursive static route on the West router that points to the LAN off of the East router
PBR Recursive Next Hop [Support] [4]
The PBR Recursive Next Hop feature enhances route maps to enable configuration of a recursive next-hop IP address that is used by policy-based routing (PBR). The recursive next-hop IP address is installed in the routing table and can be a subnet that is not directly connected
Because Cisco Express Forwarding (CEF) or process switching provides the infrastructure, the benefit of this feature is the CEF loadsharing.. Feature History for the PBR Recursive Next Hop Feature
Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release.
What is recursive static route [5]
A recursive static route relies on the next hop router in order for packets to be. A recursive static route requires two routing table lookups.
It must first look in the routing table for the destination network and then look up. the exit interface/direction of the network for the next hop router.
A directly attached static route relies on its exit interface in order for packets to. be sent to its destination, while a recursive static route uses the IP address of the
CCNA 2 v7 Modules 14 – 16: Routing Concepts and Configuration Exam Answers [6]
|How to find: Press “Ctrl + F” in the browser and fill in whatever wording is in the question to find that question/answer. If the question is not here, find it in Questions Bank.|
We will update answers for you in the shortest time. Thank you! We truly value your contribution to the website.
Which feature on a Cisco router permits the forwarding of traffic for which there is no specific route?. Which three advantages are provided by static routing? (Choose three.)
Working with recursive static routes – Learning Cisco CLI Router Configuration Video Tutorial [7]
From the course: Learning Cisco CLI Router Configuration. Join today to access over 21,200 courses taught by industry experts or purchase this course individually.
– Next I will demonstrate how to configure a recursive static route on the West router. A recursive static route is used to identify a next hop router where packets will be sent on their path to the intended destination
First the router must check the routing table for the destination network, and then it will try to find an exit interface that points to the next hop router as configured. In this particular topology, the goal is to configure a recursive static route on the West router that points to the LAN off of the East router
Recursive Lookup in BGP [8]
Noction Intelligent Routing Platform (IRP) v4.2 has just been released. Recursion is based on self-reference and can be found in many disciplines
The notorious example is the GNU acronym that is explained as GNU’s Not Unix. In computer programming the recursion function calls itself
The if condition n equals 1 represents a base case here. Its purpose is to stop the recursion, otherwise we would end up with a RecursionError: the maximum recursion depth being exceeded or even worse, exhausting resources
Cisco Certified Expert [9]
The FIB includes the following entries, referred to by the FIB as flags:. The following sections discuss each of these entries, detailing how CEF uses them
An attached FIB entry is created when the destination is directly attached to the router. In Example 2-3, the attached FIB entry represents a statically configured route with the next hop pointing to an interface attached to the router.
Known via “static”, distance 1, metric 0 (connected) Routing Descriptor Blocks: * directly connected, via Serial0/1. 10.1.1.0/24, version 56, attached, cached adjacency to Serial0/1 0 packets, 0 bytes via Serial0/1, 0 dependencies valid cached adjacency
CCNA 2 Chapter 3 V6.0 Answers [10]
What is a purpose of the network command when configuring RIPv2 as the routing protocol?. It identifies the interfaces that belong to a specified network.
It populates the routing table with the network entry.. It immediately advertises the specified network to neighbor routers with a classful mask.
How would a network administrator configure the edge router to automatically share this route within RIP?. Which route would be automatically created when a router interface is activated and configured with an IP address?
GRE Tunnels and Recursive Routing Problems [11]
Recursive routing and outbound interface selection are two significant issues with tunnel or overlay networks. When using a routing protocol over a network tunnel, utmost caution is required
This problem is typically observed when the transport network is advertised into the same routing protocol that runs on the overlay network.. Recursive routing occurs when the router learns the destination IP address for the tunnel interface through the tunnel itself
For example, in the network topology below, the routers are all running OSPF, and every router can reach each other via OSPF routes. Router2 and Router3 are connected via a GRE tunnel using 192.168.10.2 and 192.168.20.2 as the source and destination IP addresses, respectively
Extreme SLX-OS Layer 3 Routing Configuration Guide, 20.4.3 [12]
device to search for another route if the original next-hop is not reachable.. About this taskIf the next-hop for a basic static route
reachable, the device can perform a lookup for another route (a recursive route). can enable the recursive lookup feature in the default VRF or in a non-default VRF.
device(config-vrf-red)# address-family ipv6 unicast. device(config-vrf-red-ipv6-unicast)ipv6 route next-hop-recursion
01-Basic IP routing configuration- H3C [13]
Setting the maximum lifetime for routes and labels in the RIB. Enabling the RIB to flush route attribute information to the FIB
Disabling suppression for IPv4 next hop recursion loop. Setting the interval for clearing the recursion loop counter (IPv4)
Setting the interval for clearing the recursion loop counter (IPv6). Setting the maximum number of active routes supported by the device
Does CentOS have recursive route lookup feature? [14]
There are two types of proxy that might be applicable here:. The problem is, once your system passes a data packet to a gateway, you will have no further say on how the packet is going to be routed onwards: the gateway will make its own routing decisions (usually) based on the destination IP address only, using its own routing table.
If a router/gateway is audited for security, having source routing enabled will most likely cause the router to fail the audit.. If you need to use a proxy to connect to something, then as far as TCP/IP routing is concerned, then you will be connecting to the proxy
If you need a proxy to access the 173.144.4.0/24 and 172.45.5.0/24 networks, the first step is telling the client application that a proxy is needed to connect to those networks. There is no uniform way to configure all applications to use a proxy for a particular network: each application can have its own configuration scheme for this.
Determine if recursive distance is evaluated in BGP’s next hops under ECMP 6.4.2 [15]
Determine if recursive distance is evaluated in BGP’s next hops under ECMP 6.4.2. For BGP ECMP routes that require recursive lookup to the next hop, by default the routes are installed to the kernel, regardless of the distance to the next hop.
For example, a next hop that is recursively resolved by a connected router will be installed, but a next hop that is resolved by a static route will not, because its distance is higher.. config router bgp set multipath-recursive-distance enable end
In this example, BGP has learned one BGP route from two neighbors with different next hops. One of the next hops is directly connected, so its recursive distance is zero
Sources
- https://itexamanswers.net/question/which-type-of-route-will-require-a-router-to-perform-a-recursive-lookup
- https://community.cisco.com/t5/routing/recursive-lookup/td-p/2013295#:~:text=Simply%2C%20Recursive%20Lookup%20is%20self,or%20next%2Dhop%20IP%20address%22
- https://www.linkedin.com/learning/learning-cisco-cli-router-configuration/working-with-recursive-static-routes#:~:text=A%20recursive%20static%20route%20requires,next%20hop%20router%20as%20configured.
- https://www.cisco.com/en/US/docs/ios/iproute_pi/configuration/guide/iri_prb_rec_next_hop_external_docbase_0900e4b1810fe58b_4container_external_docbase_0900e4b181525fed.html#:~:text=The%20recursive%20next%2Dhop%20IP%20address%20is%20installed%20in%20the,routed%20using%20a%20default%20route.
- https://www.studocu.com/row/document/lebanese-international-university/computer-network/what-is-recursive-static-route/45670612
- https://examscisco.com/ccna-v7-0/ccna-2-v7-modules-14-16-routing-concepts-and-configuration-exam-answers/
- https://www.linkedin.com/learning/learning-cisco-cli-router-configuration/working-with-recursive-static-routes
- https://www.noction.com/blog/recursive-lookup-in-bgp
- https://www.ccexpert.us/traffic-share/fib-entries.html
- https://ccnaanswers.com/ccna-2-chapter-3-v6-0-answers/
- https://study-ccnp.com/gre-tunnels-recursive-routing-problems/
- https://documentation.extremenetworks.com/slxos/sw/20xx/20.4.3/l3config/GUID-5858DA80-E8E7-4304-A393-3C49F991B393.shtml
- https://www.h3c.com/en/d_202012/1370558_294551_0.htm
- https://unix.stackexchange.com/questions/706504/does-centos-have-recursive-route-lookup-feature
- https://docs.fortinet.com/document/fortigate/6.4.0/new-features/703086/determine-if-recursive-distance-is-evaluated-in-bgps-next-hops-under-ecmp-6-4-2
