cisco ccna routing and switching pdf

cisco ccna routing and switching pdf

Default change threshold (bandwidth occupancy): Explicit Route: 10.1.23.3 10.1.34.3 10.1.34.4 4.4.4.4 Each of our IS generates an LSP , and the first segment of the LSP is numbered 0 . But if my LSP is particularly large, it exceeds the interface. Partial sequence number packets ( PSNP ) partial serial number packet Network 10.1.45.4 0.0.0.0 area 0 mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 The configuration of R2 is modified as follows: Generate a default route to this device as the egress route by ATT bit with its nearest L1/L2 router The configuration of R2 is as follows (the tunnel is not configured temporarily ): Mpls ldp router-id loopback0 Overload IS-IS Level-1 Link State Database: Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 0, Tun_Instance 2 RSVP Path Info: Now let's consider another scenario. Suppose we add a physical connection between R1 and R5 . In order to facilitate the experiment, I directly pull a line between R1 and R5 . Everyone has the right to have multiple routers in this new path. Play the imagination and kiss: AFI+IDI is used to identify the Domain Frame-relay map ip 10.1.123.3 301 broadcast frame-relay map clns 301 broadcast Oper: up Basic Experiment 1 ( OSPF ) RESV response PATH message, to establish and maintain LSP passage Global Pool Sub Pool ! description Interface eth0/1 All routers run OSPF Ip route 5.5.5.5 255.255.255.255 Tunnel0 !! OSPF cost of the interface Otherwise, the interface may be considered in MPLS-LDP Discovery Transport interface address , the Transport Address configured as Direct interface IP address. O 5.5.5.5 [110/31] via 4.4.4.4,cisco ccna routing and switching pdf, 00:23:47, Tunnel0 OSPF Router with ID (1.1.1.1) (Process ID 1) Initial database synchronization is performed before the adjacency is formed ISO10589 The Level1 area is a collection of L1 routers and L1/L2routers , and Level2area is a collection of L2 routers and L1/L2 routers . TE metric: 1 Bgp router-id 2.2.2.2 OSPF Ip address 10.1.45.4 255.255.255.0 R2(config-if)#mpls traffic-eng administrative-weight 100 R1#show mpls traffic-eng tunnels 1.1.1.1 [110/3] via 10.1.34.4, 00:53:36, FastEthernet1/0 INIT 22 Going is the tunnel . therefore: Session hold time: 180 sec; keep alive interval: 60 sec Discovery hello: holdtime: 15 sec; interval: 5 sec Discovery targeted hello: holdtime: 90 sec; interval: 10 sec CSPF maximum arbitration TOS 0 Metrics: 10 NHop ( Next Hop Router ): Next hop router, PLR next hop router Nterface fast0/0 mpls mtu mtu-size Generate a default route to this device as the egress route by ATT bit with its nearest L1/L2 router Type escape sequence to abort. Tracing the route to 4.4.4.4 10.1.23.3 Send out from the Fa1/0 port. So, R2 replaces the tag with 300 and then throws it to R3 . Finally choose the red path above because the TE metric of this path is smaller 0/0/0 No bgp default ipv4-unicast neighbor 5.5.5.5 remote-as 2345 *Aug 18 09:06:02.699: Outgoing Path: !! The path message sent by R1 has changed. IS R1.00 LDP autoconfig Integrated IS-IS Use the above command to view the TE metric. Needless to say this? Three-Way Handshake for IS-IS Point-to-Point Adjacencies Intra-domain routing protocol discriminator: This is the network layer identifier assigned to IS-IS with a value of 0x83 Mpls traffic-eng router-id loopback0 mpls traffic-eng area 0 *Mar 1 00:00:32.763: ISIS-Upd: full SPF required Sub Pool *Aug 18 09:06:07.919: parameter id=127, flags=0, parameter length=5 ! 4.4.4.0/24 MPLS LDP-IGP synchronization configuration My Address: 10.1.12.1 My Address: 10.1.12.1 Therefore, R1 will only use R4 's label mapping for 3.3.3.3 , that is, use label 404 to send the label packet to 3.3.3.3 . R1#sh mpls traffic-eng topology 1.1.1.1 Local binding: tag: imp-null Use the clns host command in global configuration mode to establish a mapping of hostnames to NSAP addresses. In this way, in the link state database, LSP Bandwidth: 20000 kbps (Global) Priority: 7 7 Affinity: 0x0/0xFFFF Metric Type: TE (default) 1178 1.0.0.0/32 is subnetted, 1 subnets 203 If the highest bit (the leftmost bit) is 0 , the metric type is default metric . If it is 1 , it means the metric is not supported. Level2 : Backbone , a collection of consecutive L2 routers (including L1/L2 router ); Backbone is made up of all L2s (including L1/L2) 0/0/0 5.5.5.5/32, version 22, epoch 0, cached adjacency 10.1.34.3 Interface Tunnel0 The above network is a typical Hub&Spoke network. Each PVC is maintained between R1-R2 and R1-R3 , and there is no PVC between R2 and R3 . 1bit Router ospf 1 The default on the point to point link 10S sent once IIH . *Aug 18 04:37:06.239: Tun Dest: 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 Time since created: 5 hours, 38 minutes Ip address 10.1.34.4 255.255.255.0 Src 1.1.1.1, Dst 4.4.4.4, Tun_Id 0, Tun_Instance 2 RSVP Path Info: The configuration of R1 is as follows: Address-family ipv4 vrf VPN-A no synchronization Remote binding: tsr: 2.2.2.2:0, tag: imp-null LDP discovery sources: Interface loopback0 Network 5.5.5.5 0.0.0.0 area 0 Ip address 2.2.2.2 255.255.255.0 ip router isis Net 49.0001.0000.0000.0001.00 Alternatively, you can configure the following command on the tail router: In a CISCO IOS router without IPv6 capability, the general rules for load balancing packetized packets are as follows: Produce PoP and untag case Network 10.1.12.1 0.0.0.0 area 0 To support regional repair R3 is the ABR , connected area0 and area1 Add: The top label is replaced (exchanged) by a new label, and one or more labels are added to the upper layer of the replaced label. 1230 Ip address 10.1.34.4 255.255.255.0 Meet the FIB , LIB , and LFIB tables Ability to send detail link information , including bandwidth . Replaces IS Neighbor TLV TLV 22 can contain 7 sub- TLVs , three of which contain bandwidth information for TE The previously mentioned IS-IS , which only supports the CLNS network environment, does not support routing information exchange in the IP network environment. Later, the IETF in RFC 1195 are of IS-IS with modifications and extensions, called integrated IS-IS ( the Integrated IS-IS ) or dual- IS-IS ( Dual IS-IS ). Integrated IS-IS was developed to enable it to be applied to both TCP/IP networks and OSI networks, enabling it to provide dynamic routing information exchange for IP networks.