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T3700G-28TQ V1
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Tp-Link T3700G-28TQ V1 Руководство пользователя онлайн [201/415] 393819

189

Type

Code

Name Features

6 NSSA

External LSA

Originates from ASBR in t

he NSSA. The content of this LSA is

the same as that of AS external LSA, but it would be advertised

only to NSSA. ABR can transform this type of routing information

to AS external LSA and then flood it to the entire AS.

Table 10-5 Types of LSA



OSPF Features Supported by the Switches

This switch, supporting standard OSPF routing features, is applicable to multiple network

environments and able to meet the common networking requirements in the Ethernet scene. The

OSPF features supported are listed as follows.

1) Multi-process – The switch can establish multiple routing processes, independent of each

other and having independent database. Each routing interface belongs only to one specific

process. In short, multi-process on one switch is to divide one switch into several independent

switches logically.

2) Area Partition – The switch can divide an autonomous system into different areas according

to the user-specified principle. The routers in the same area only need to synchronize LSA

with the other routers in its area, which can save routing resources and lower routing

performance requirements, thus to reduce networking cost.

3) Configuration of multiple equal-cost routes to balance load and backup lines.

4) Route redistribution –OSPF can import routing information learned by other routing protocols

or other OSPF processes.

5) Plaintext authentication and MD5 authentication supported when two neighbor routers in the

same area are performing message interaction, which can improve the security.

6) Customized configuration of multiple interface parameters, including the interface cost, the

retransmit interval, the transmit delay, the router priority, the router dead time, the hello

interval and authentication key, etc. in order to satisfy multiple network requirements with

flexibility.

7) Configuration of virtual link – When a network being divided into several areas, it can connect

the areas physically located far away to the backbone network through virtual link.

8) Configuration of Stub Area and NSSA.

9) ABR route summarization – to summarize the intra-area routing information with the same

prefix with a single route and then distribute it to other areas.

10) ASBR route summarization – to summarize the external routing information with the same

prefix with a single route and then distribute it to the autonomous system.



Configuration Introduction

OSPF protocol defines various parameters to guarantee the normal operation of the OSPF

function. The configurations of all the routers in the AS should be unitedly planned, which adds

complexity to the implement of the OSPF function to some extent. However, in a practical scenario,

most of these parameters need no configurations unless there are special requirements. Users

can keep the default values of these parameters and configure the basic ones. The necessary

steps to configure OSPF protocol is shown below:

1) Enable routing features on the switches. The routing features are enabled by default.

Tp-Link T3700G-28TQ V1 Руководство пользователя онлайн [201/415] 393819

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