VPN over GRE (Routing Protocol OSPF) ppsx

... 100 ! ! GRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE Tunnel GRE TunnelGRE ... Category=4 GRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelGRE TunnelG...

Ngày tải lên: 25/07/2014, 07:21

... link-state protocol data unit (LSP). This chapter covers these functions and the surrounding network events th at cause the IS-IS protocol to generate, flood and finally age LSPs. Link-state routing protocols ... 155 138 5. Neighbour Discovery and Handshaking • Support sub-second timers on behalf of protocols that cannot • Negotiate timers dynamically The BFD protocol, unlike many other pr...

Ngày tải lên: 02/07/2014, 20:21

... system is secured via a kernel that each process relies upon, greatly minimizing the impact of broken software. Second, the routing protocols are split up into a real-time component and a non-real-time ... between the RE and the PFE is a standard Fast Ethernet link that runs a proprietary protocol called the Trivial Network Protocol (TNP). TNP takes care of the proper care and feeding of...

Ngày tải lên: 03/07/2014, 19:20

... interaction in 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 ... interaction directly between the protocols. There is just interaction between an individual routing protocol and the routing table as shown in Figure 3.15. Each routing protocol may...

Ngày tải lên: 03/07/2014, 19:20

... the IS-IS protocol. 5.1 Hello Message Encoding Each routing protocol uses Hello messages for neighbour discovery and to perform handshaking. In IS-IS, just like in any other routing protocol, ... (and signalling) protocols include a method of automatic neighbour discovery that enables a router to determine if there are any other adjacent routers running the same routing protocol. Once y...

Ngày tải lên: 03/07/2014, 19:20

... applies to the OSPF routing protocol: The Hello Neighbour Liveliness Detection 135 136 5. Neighbour Discovery and Handshaking and Dead timer there needs to be conveyed in the protocol. The lowest unit ... however, the typical WAN OSI-RM Layer 2 protocols like PPP, Cisco-HDLC, Frame-Relay, or ATM RFC 1483-SNAP, do not have the notion of MAC addresses. All of those WAN protocols are optimized...

Ngày tải lên: 03/07/2014, 19:20

... RPD_ISIS_OVERLOAD: IS-IS database overload Aug 28 15:24:52 Frankfurt rpd[344]: RPD_ISIS_OVERLOAD: IS-IS database overload Aug 28 15:34:53 Frankfurt rpd[344]: RPD_ISIS_OVERLOAD: IS-IS database overload Based ... traf- fic. More about the Overload Bit and what can be done with it was covered in Chapter 6, “Generating, Flooding and Ageing LSPs”. The good news is that a router setting the Overload...

Ngày tải lên: 03/07/2014, 19:20

... Buffer overruns. 11.3.4.2 Sub-TLV Overrun Checking A sub-TLV parser should verify at any time that the sum of all parsed sub-TLVs does not get bigger than the original TLV minus the TLV specific overhead. ... Type Code #47 is well known by all routers running the IS-IS protocol, one could suppose that there could be a rule in the IS-IS protocol that Code 47 always means an implicit length o...

Ngày tải lên: 03/07/2014, 19:20

... 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 of the protocol ... those prefixes need to compete with prefixes from other routing protocols to become active routes. Because of its role as a topology discovery tool, IS-IS does not carry customer route...

Ngày tải lên: 03/07/2014, 19:20

... Public Classifying Routing Protocols Classifying Routing Protocols  IGP: Comparison of Distance Vector & Link State Routing Protocols Link State Routing Protocols Link state – com p lete ... reserved. Cisco Public Dynamic Routing Protocols Dynamic Routing Protocols  Components of a routing protocol – Data structures Data structures •Some routing protocols use tables and...

Ngày tải lên: 01/08/2014, 18:20