where can i take the ccna exam

where can i take the ccna exam

2.2.2.2 [110/65536] via 10.1.12.2, 00:00:47, FastEthernet0/0 Configure on the physical interface: *Aug 18 04:37:06.243: Tun Dest: 5.5.5.5 Tun ID: 0 Ext Tun ID: 1.1.1.1 Tunnel mpls traffic-eng priority 6 6 In the Level1 link state database. Each zone in the IS-IS domain has a unique Level1 link state database. The shortest path is calculated by the SPF algorithm. Average rate = 250000 bytes/sec, burst depth = 1000 bytes Designated Intermediate System designated intermediate system LS age: 29 If the payload of the MPLS is not an IPv4 packet, load balancing will be performed by looking at the value of the label at the bottom of the bottom. Regular area (non-backbone area) Pop tag Max_reservable_bw_sub: 0 ​​(kbps) Virtual circuit ID of X.25 or ATM Create a TE tunnel on R1 , the source is its own loopback0 , and the destination is 4.4.4.4 of R4 . Layer 1 and Layer 2 set different metrics. Network 3.3.3.3 0.0.0.0 area 0 6bits 0x80000018 0x001C01 1 13 Peer LDP Ident: 4.4.4.4:0; Local LDP Ident 2.2.2.2:0 TCP connection: 4.4.4.4.24940 - 2.2.2.2.646 10.1.56.5 [MPLS: Label 505 Exp 0] 4 msec 0 msec 0 msec MPLS TE tunnel Nolabel/505 Can I perform route summarization on the L1 router ? Configuration command Virtual link OutLabel : FastEthernet1/0, 301 ! Next, R3 receives the tag package. Similarly,where can i take the ccna exam, look at your own LFIB : List the adjacent L1-routers . Note that our section says L1 router. Net 49.0003.0000.0000.0005.00 0x18B7 *Aug 18 09:06:02.699: Setup Prio: 7, Holding Prio: 7 10.1.12.2 [MPLS: Label 201 Exp 0] 132 msec 184 msec 88 msec In order to ensure the simplicity of the experimental environment first, I will ignore the existence of the R4 and R4 direct links. When you don't exist, you will be there. SNP serial number packet IS-Extended R2.01 Tunnel mpls traffic-eng autoroute metric relative z Interface Tunnel0 10.1.23.2 Provide a loop-free network 1 Net 49.0001.0000.0000.0004.00 SRM : used to control the delivery of LSPs to adjacent routers during the update process. (Link Data) Router Interface address: 0.0.0.13 Number of MTID metrics: 0 It was dismantled and then continued to be removed. For example, the above figure, we can test on R2 , the configuration is as follows: As long as the route prefix is ​​learned locally through the IGP , the route prefix is ​​assigned a label ( locally also assigns a POP label to the direct route ) LS age: 43 It is strongly recommended to enable this command to view some logs of the isis adjacency . The default is closed. Ip unnumbered loopback 0 tunnel destination 5.5.5.5 tunnel mode mpls traffic-eng Next, R2 receives the tag packet. R2 knows that this is a tag packet from the type field of the Layer 2 Ethernet frame header of this packet, so it looks for its own LFIB table: 55.55.55.55 [110/31] via 5.5.5.5, 00:00:01, Tunnel0 Destination-based load balancing is actually achieved by HASHing the destination and source IP addresses . In other words, it is actually based on source and destination address pairs for load balancing. Router-id 4.4.4.4 0x2D6E Switched Path: valid Since the IP packet is generated on the initial router, the CEF table is searched . With the " show ip cef detail " command, you can see from the output whether the route is pushed into the label. The distribution label is based on The prefix in the CEF table is assigned. The distribution of the label is like this: RSVP Type : 0x0800 carries IPv4 packets and finds FIB. *Aug 18 09:06:07.919: average rate=250000 bytes/sec, burst depth=1000 bytes R6#traceroute 5.5.5.5 soure 6.6.6.6 Globally activate MPLS TE tunnel and set MPLS label space EXP Outgoing *Aug 18 04:37:06.239: General Parameters break bit=0 service length=8 (Link ID) Network/subnet number: 2.2.2.2 (Link Data) Network Mask: 255.255.255.255 Number of MTID metrics: 0 The load of the routing processor is low in large areas Event caused reoptimize Do not need to explain it again? At R4 , R4 pops the top label and forwards the packet to R5. The PATH message carries a label request object, which is hopped and hopped from the tunnel first-end router to the tail router. Next-address 10.1.45.5 Untagged 5.5.5.5(0) ADV Router *Aug 18 09:06:07.919: SESSION_ATTRIBUTE type 7 length 16: Message Interface fast1/0 BW (kbps) Network 10.1.23.3 0.0.0.0 area 0 Network 10.1.12.2 0.0.0.0 area 0 Path Protect Parameters: How MPLS LDP-IGP synchronization works The loopback0 address space of all devices is xxxx/32 , and x is the device number. Physical Bandwidth: Physical bandwidth of the 100000 kbits/sec !! interface Max_reservable_bw_sub: 0 ​​(kbps) *Aug 18 11:26:02.546: Incoming Resv: !! R2 sends a resv message to R1 1.0.0.0 5 10.1.56.6 4 msec * 4 msec 3.3.3.0 [115/20] via 10.1.23.3, Serial1/0 My Address: 10.1.23.2 Show and debug Next, you can test the forwarding of traffic on R1 . First we need a routing protocol that can advertise various network resources (weights, IGP metrics , available bandwidth, link attributes, etc.). This routing protocol must be a link-state routing protocol and must support MPLS TE extensions. We have two Optional, one is OSPF and the other is IS-IS . In the CISCO IOS based "internal for MPLS TE link-state routing protocol extensions " to the TE information to build a TE database , the database contains all enabled MPLS TE characteristics or parameters of the links and the links. Parameters such as bandwidth and link attributes that can be used for MPLS TE are configurable on all links in the network.