what happened to pass4sure cisco

what happened to pass4sure cisco

Fa0/0 Run OSPF on the entire network to announce direct connection and loopback interface. Tag rewrite with Fa0/0, 10.1.34.3, tags imposed: {303} 0xCC Network 10.1.45.5 0.0.0.0 area 0 First we look at R1 : P2P Links: Multiacces Links: Mpls traffic-eng tunnels ip rsvp bandwidth Tunnel mpls traffic-eng path-option 10 dynamic Fa0/0 Further analysis of the metric problem. We focus on 55.55.55.55 , after the basic configuration above, currently in the routing table of R2 Feature overview R1(config)#router isis The ACL is used to match who sends an explicit null tag. R2 . But why? The reason is that the label assigned by R2 to route 10.1.12.0 is PoP , because 12.0 is the directly connected network segment of R2 , and there is a second-end hop pop-up mechanism. Then this IP packet is R2 to stop the meal , because R2 does not have 6.6.6.6 and 5.5.5.5 routing. How to do? *Aug 18 11:31:44.598: (Link ID) Network/subnet number: 2.2.2.2 (Link Data) Network Mask: 255.255.255.255 Number of TOS metrics: 0 In-label Out intf/label Explicit Route: 10.1.23.3 10.1.34.3 10.1.34.4 4.4.4.4 IS , since this is a LAN environment, DIS is elected , and each non- DIS router advertises its own adjacency with the DIS without notifying the adjacency with other physical ISs . The LSP of R3\R3 is similar,what happened to pass4sure cisco, and will not be described here. Take a look at the LSP of this pseudonode : DIS Adjacency relationship Up or Down ; IS-IS Environmental description 5.5.5.5 MPLS TE can change the bandwidth and attribute parameters of the link through adaptation. Mpls traffic-eng tunnels ip rsvp bandwidth Prefix The IP forwarding instance does not consider the available bandwidth and load capacity of the link. It is possible that the metric assigned by the link is not the same as the actual metric . The target network segment involved in MPLS is the same as traditional IP forwarding. Bw[4]: After the feature is activated, both R3 and R5 advertise the existence of this tunnel (in the form of a direct link) within the zone . Equivalent to having one more path (virtual path) in the topology environment. FastEthernet1/0, Src IP addr: 10.1.13.3 A0/0 PSNP The configuration of R2 is as follows: Clear text area certification The configuration of R3 is as follows: 75000 Such as 39.0f01.0002. 0000.0c00.1111 . 00 Inter-domain routing protocol LSPID LSP Seq Num LSP Checksum LSP Holdtime ATT/P/OL Such as OSPF such IGP protocol, configured or interface bandwidth cost calculated the optimal route General Parameters break bit=0 service length=8 OSI terminology OSPF supports the following network types: P2P , broadcast, NBMA , point-to-multipoint, and on-demand circuits Note: To use the above command to complete conditional notifications, you need to use no mpls ldp advertise-labels first . Otherwise, the LSR advertises all label bindings. [115/10] via 10.1.123.2, FastEthernet0/0 OAM is basically used for error detection, location, and monitoring implementation. This tag distinguishes between ordinary messages and OAM messages. CISCO IOS does not use tag 14 , which performs MPLS OAM but is not implemented by tag 14 . 10.1.12.2 TE with Layer 2 overlay Ip router isis router isis ! Create a TE tunnel on R1 , the source is its own loopback0 , and the destination is 4.4.4.4 of R4 . TTL-propagate Name: R1_t0 Status: O R2-PE1#show mpls traffic-eng tunnels Tspec: ave rate=2000 kbits, burst=1000 bytes, peak rate=2000 kbits Ip cef R2.00-00 Network 10.1.12.2 0.0.0.0 area 0 2.2.2.0 [115/20] via 10.1.123.2, FastEthernet0/0 3.0.0.0/24 is subnetted, 1 subnets The configuration of R3 is as follows: MPLS TE Ip address 10.1.45.4 255.255.255.0 Intermediate System Intermediate System ISO 10589 IGP Neighbor: ID 10.1.12.2 !! Specify the range of local tags, this can be a great convenience in the experiment ! The implicit empty tag above has already been introduced, it does increase efficiency, but there is also a problem, because if I receive an implicit null tag sent by a downstream neighbor about a particular prefix bundle, then I am forwarding the tag. Before the data is given to the neighbor, I will first pop the top-level label. Then the pop-up action actually pops up the entire top-level label header, that is, even the fields with the label field, EXP, etc. pop up, and EXP knows For QoS , it is also popped up, meaning that some information for QoS is lost here .