Table of Contents
What is TE in network?
TE is the process of steering traffic across to the backbone to facilitate efficient use of available bandwidth between a pair of routers. Prior to MPLS TE, traffic engineering was performed either by IP or by ATM, depending on the protocol in use between two edge routers in a network.
What is a TE tunnel?
The Multiprotocol Label Switching (MPLS) Traffic Engineering (TE): Tunnel Source feature allows you to specify the IP address assigned to an interface as the source IP address for control packets.
What is OSPF in Cisco switch?
OSPF (Open Shortest Path First) is a routing protocol developed by Internet Engineering Task Force (IETF). OSPF is standards-based which means it is available on routers by Cisco as well as other vendors, making it a vendor-neutral routing protocol.
What does te stand for in Cisco?
TE stands for Traffic Engineering (Cisco)
What is MPLS TE FRR?
Traffic engineering (TE) fast reroute (FRR) protects links and nodes on MPLS TE tunnels. If a link or node fails, TE FRR rapidly switches traffic to a backup path, minimizing traffic loss.
What are the components of MPLS TE?
MPLS TE uses an extension for existing protocols (Intermediate System-to-Intermediate System (IS-IS), Resource Reservation Protocol (RSVP), OSPF) to calculate and establish unidirectional tunnels that are configured according to the network restriction.
What is required for implementing MPLS TE?
Enabling MPLS TE. Cisco MPLS TE requires configuration at the node and interface (link) levels. The configuration involves mainly the definition of MPLS TE and Resource Reservation Protocol (RSVP) behavior. In addition, you may want to enable the TE extensions for your IGP to perform constraint-based routing.
What is OSPF and how it works?
OSPF is an interior gateway protocol (IGP) for routing Internet Protocol (IP) packets within a single routing domain, such as an autonomous system. It gathers link state information from available routers and constructs a topology map of the network.
What’s the difference between CR LDP and RSVP-TE?
2 commonly used terms in MPLS are LDP and RSVP-TE….LDP vs RSVP.
| PARAMETER | LDP | RSVP |
|---|---|---|
| Requirement | If primarily LSPs need to be set up, LDP should be used | If you require traffic engineering and resources reservations, use RSVP (-TE). |
| Scalability | High | Low |
| ECMP | Possible | Not Possible |
| Fast Reroute (FRR) support | No | Yes |
What is te stand for?
| Acronym | Definition |
|---|---|
| TE | Tight End (football) |
| TE | The End |
| TE | Traffic Engineering |
| TE | Traffic Engineering (Cisco) |
What is the meaning of te?
te in British English or ti (tiː ) noun. music. (in tonic sol-fa) the syllable used for the seventh note or subtonic of any scale. Collins English Dictionary.
What is FRR Cisco?
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required. Prerequisites for IPv4 Loop-Free Alternate Fast Reroute. • Loop-Free Alternate (LFA) Fast Reroute (FRR) can protect paths that are reachable through an interface only if the interface is a point-to-point interface.
What is LDP FRR?
A link or router failure on a path can cause packet loss until LDP establishes a new LSP on the new path. LDP FRR enables fast rerouting to minimize the failover time. LDP FRR is based on IP FRR and is enabled automatically after IP FRR is enabled.
What is RSVP TE in MPLS?
The Resource Reservation Protocol for Traffic Engineering (RSVP-TE) is an extended version of RSVP for MPLS. RSVP-TE uses traffic engineering extensions to support automatic signaling of LSPs. MPLS uses RSVP-TE to set up traffic-engineered LSPs.
What is OSPF in Cisco?
OSPF was designed expressly for IP networks and it supports IP subnetting and tagging of externally derived routing information. OSPF also allows packet authentication and uses IP multicast when sending and receiving packets. Cisco supports RFC 1253, OSPF Version 2 Management Information Base, August 1991.
How do I enable OSPF on the router?
Enabling OSPF on the router involves the following two steps in config mode: Enabling an OSPF process using the router ospf command. Assigning areas to the interfaces using the network command.
Which Cisco IOS release does the show ip OSPF virtual-links command support?
This command is supported in the Cisco IOS Release 12.2SX train. Support in a specific 12.2SX release of this train depends on your feature set, platform, and platform hardware. The information displayed by the show ip ospf virtual-links command is useful in debugging OSPF routing operations.
What is the routing redistribution information for OSPF process?
Routing redistribution information for OSPF process 1. 192.168.240/20 Network number and mask. OSPF metric type. OSPF process tag identifier. OSPF router from which routing information was redistributed.