ccnp tshoot practice labs gns3

ccnp tshoot practice labs gns3

The upper digit is the individual/group bit. When its value is 0 , it can be considered that the address is actually the MAC address of the device . When its value is Internal The same community VLAN can communicate with each other, but the community VLAN must be set up by SVI or router interface to communicate. SW3 receives this BPDU , but finds that this BPDU is less preferred than its own locally stored BPDU , so the BPDU is ignored. Vlans allowed on trunk This idea has been applied to dynamic routing protocols such as OSPF . Careful children's shoes will find that after you deploy route summarization in OSPF , it will automatically generate a summary route pointing to null0 locally . The reason is explained above. the same. When the routing policy changes, the neighbor is requested to re-advertise the route ( BGP does not periodically send updates) Y Below, let's look at an example: In general, we believe that the attack behavior is mostly from the terminal's PC , which may be poisoning or hacking. Therefore , the interface connected to the terminal PC is configured as a DAI untrust interface, and the interface between the switches is configured as a trust interface. Exit Show ip cef exact-route src-addr dest-addr Same interface mode ( access , trunk ) 10.1.13.1 The set statement cannot be included in the Policy-list , but after it is called by route-map , the route-map can contain the set statement. The configuration of R2 is added as follows: R4#sh ip bgp R2(config-router)# distribute-list 1 in fa0/0 BPDU , then he will send again. Therefore, for 802.1D , the root bridge will send BPDUs to all interfaces continuously . The non-root bridge will receive BPDUs from its own root port and send BPDUs to its designated port . Non-designated ports will not send. BPDU 's will only listen. Network xxx mask yyy route-map zzz Open loopback on R2 , IP is 172.16.10.0/24 , 172.16.11.0/24 Not the routerID of R1 , because it is not necessary at all). The above command calls the defined policy-list in the route-map ; multiple policy-lists can be called in a route-map . Router bgp 100 Configuration last modified by 0.0.0.0 at 3-5-93 02:01:49 *> 100.0.1.0/24 Packets with destination addresses that do not exist at the beginning of 192.168 are discarded directly. Normal traffic on other subnets of the 192.168 intranet will be forwarded according to the longest matching principle. Last update from 192.168.34.3 on Serial0/1, 00:09:32 ago Routing Descriptor Blocks: Origin IGP, metric 0, localpref 100, valid, internal For example, if you go to a destination and there may be multiple equal-cost paths, you may actually use one of them when forwarding data. Use this command to see which interface is actually used for traffic forwarding. 100 i Bgp deterministic-med R* 0.0.0.0/0 [120/1] via 192.168.12.1, 00:00:03, Serial0/0 Static route associated with the outbound interface Network All dynamically learned MACs on this interface will be converted to a sticky mac address to form a secure address. 100 On R1 , ip route 1.0.0.0 255.0.0.0 null 0 then ip defaut-network 1.0.0.0 , then R2R3 will learn the default route Violation Mode : Shutdown !! After the violation, the default is shutdown Aging Time : 0 mins : ccnp !! On R1 , Fa0/20 port trimmed only vlan 1 and 10 , because this BGP routing table entry for 172.16.0.0/16, version 3 A route-map defined on the interface . In this way, only the PBR action will be performed on the traffic entering the interface . The traffic originating from this device is invalid. ( 20s time), start to enter the listening state 192.168.67.6 DHCP Snooping Binding Database 10.1.25.2 CISCO Note: If the DHCP relay agent is enabled but DHCP snooping is disabled, the DHCP option-82 data insertion feature is not supported. 200 i Set tag 10 100$|400$ Ip address 10.1.45.4 255.255.255.0 Redistribute static subnets The meaning of this command here is that only 1.1.1.0 is allowed to go out of the route redistributed from the RIP routing protocol (to OSPF ,ccnp tshoot practice labs gns3, there is no direction, as long as the interface is running OSPF ) ^100$ 120 Use the err-disable command to modify the duration of the err-diasable state. The default is 300S. To this end, some organizations and manufacturers propose to layer the data link layer, which is divided into logical link control sub-layer ( LLC ) and media access control sub-layer ( MAC ). Such different physical layers correspond to different MAC sublayers, and the LLC sublayer can be completely independent. As shown in Figure 1-4 . neighbor 1.1.1.1 filter-list 1 weight xxx neighbor transmitted, and is filter-list 1 matching entry, weight is set to xxx Eliminate routing loops by horizontal splitting The following is the change of the packet after MD5 authentication is configured (all TCP packets have MD5 HASH field added): 10.1.13.1 The above match statement is used to match the neighbor IP that sent the summary route . If you specify a copy attributes option, is inject the specific routes will inherit the path attribute of the aggregated route, or breakdown will be as locally generated routes. A policy-list is like a route-map that only contains a match statement. Public Locally find a route to the neighbor and try TCP three-way handshake. Waiting for completion, the authentication is completed during TCP setup. If the TCP connection is not up, enter the Active state and try to connect repeatedly. Situation 2 Core switch configuration: In the in direction, the distribution list can only filter the route when the LSA is received locally. When the route is generated, the router's own routing table that implements the distribution list will be affected by the distribution list (but the local LSDB still has the LSA ), and router will still LSADB in Detailed rules When a BGP route is sent from the group members of the cluster to the RR , RR Due to the lack of a feedback mechanism, the interface connecting A to Root from Listening to Forwarding needs to experience a delay of 15*2s . In this case A , B , C the second line on the user traffic problems (since D in better received BPDU after the P1 port block , this time ABC corresponds A root port transitions to the forwarding are in the network before the " buffer zones " ) R3 summarizes the details of R1 and R2 (summary command plus AS_SET keyword), so that the BGP summary route generated by R3 inherits the detailed AS_PATH attribute, and the packet capture on R4 will find the summary route. = 300 {100,200} AS_PATH : look at the results of the capture, found article summary route AS_PATH attribute consists of two parts ( segment ), the value 300 that the segment is 0 0 Routing feedback Match community 30 If both commands are closed: Neighbor 3.3.3.3 peer-group IBGP_peers neighbor 4.4.4.4 peer-group IBGP_peers For example, if you go to a destination and there may be multiple equal-cost paths, you may actually use one of them when forwarding data. Use this command to see which interface is actually used for traffic forwarding. The client ( D ) passed to it by the RR is not passed to the non- client (E) R1 is in AS100 and routes 1.1.1.0/24 to EBGP neighbor R2 . Load balancing If ip routing is enabled , the command is ignored (but the default route Ip route 0.0.0.0 0.0.0.0 x ) is displayed ; Hardware address Router bgp 64512 Redistribution between different OSPF processes CCNP ROUTE contains all the contents of the book After receiving the BPDU sent by SW3, SW2 stops sending its own BPDU. Not advertised to any peer Local STP topology change Interface fast0/0 Origin IGP, metric 0, localpref 100, valid, internal, best Only vlan1 and vlan10 Port Secret level When both DSAP and SSAP take a specific value of 0xff , the 802.3 frame becomes a Netware-ETHERNET frame to carry NetWare. After the server mode is enabled, the client will automatically start pruning. 1 : RIP-1 ; 200 i A distribution list is a tool used to control routing updates. It only filters routing information and cannot filter LSAs . Therefore: the distribution list is used in the distance vector routing protocol, and the route can be filtered normally in either in or out direction. But the work in the link state routing protocol is a bit problematic. The configuration of R3 is as follows: Redistribute static Experiment 2: weighted The secure address formed by the dynamically learned MAC is valid. If the MAC is in a failed state within 50 minutes (for example, the host is offline), the secure address is cleared after the aging time expires. Multi-hop EBGP BPDUFilter Set community none router bgp 3 The MAC sublayer is responsible for the following tasks: Complete basic configuration 2 After the above configuration is implemented, R1 will filter out the 3.0 route. basic concept The above command only re-advertises OSPF external routes E1 and E2 into BGP. Configuration example 2 : as-path access-list with route-map Origin IGP, metric 0, localpref 100, valid, external, multipath BGP router identifier 12.12.12.12, local AS number 64512 BGP table version is 2, main routing table version 2 Route, and redistribute the route into its own OSPF process 2 , then R3 will learn this route from process 2 , assuming R3 learns this first The route originated from the local (such as the local network , or aggregate ), that is, the next hop is 0.0.0.0 ( in the BGP table , the current path) The Client does not know its own Client , so the RR itself can also become a client of others. Both R1 and R2 inject 100.0.1.0 and 100.0.2.0 into BGP using network . Ip nat inside source route-map nat4 interface serial0/0 overload None Neighbor 1.1.1.1 route-map COST1 in neighbor 3.3.3.3 route-map COST2 in parameter Match ip add pre 1 Path Configuration command 65 Index Define a DHCP address pool. One network segment corresponds to one address pool. A match to a start, the end of any single character string, such as A0 , a! Etc. RIP update behavior Related commands : The following figure is the sender using the route-fresh message to push the prefix-list First ensure that R1 , R3 to 10.1.1.0 are routed, and test on R2 : Neighbor 10.1.23.2 remote-as 200 neighbor 10.1.23.2 route-map test in 4.3.2 Message Type 35 Port Vlans allowed on trunk In addition, for R4 , R5 is a normal EBGP neighbor at the moment , and it is another AS64513 , and there is no relationship with me. There is a problem with the establishment of the federation. Therefore, you need to add the bgp confederation peers 64513 command on R4 . , then R4 will AS64513 regarded as its federal the EBGP the peer , while the addition AS64513 outside the AS treated as ordinary AS .