ccnp tshoot ping plan

ccnp tshoot ping plan

VTP Traps Generation Network 100.0.2.0 mask 255.255.255.0 For securing from the same AS body different routes advertised peer to be MED comparing command and bgp always-compare-med relationship is as follows: Switch(config-if)# switchport mode access Can only be passed between IBGP peers (unless a policy is made, the LP value will not be lost between IBGP neighbors within the AS ), not in EBGP Use show port-security address to view the security address entries on each port-security interface. RIP-2 RIPv2 uses multicast update Set as-path tag Redistribution will only perform re-release actions on routes in the routing table. Routing strategy needs (reliability, redundancy, offloading model, etc.) Interface fast0/0 Ip address 10.1.25.5 255.255.255.0 ipAddress Of course, the subnet 172.16.0.0/16 can be further subnetted to get 172.16.10.0/30 or even 172.16.10.1/32 , then if these prefixes exist, when I am going to find 172.16.10.1 , who's What is the highest match? Obviously, is the host prefix of 172.16.10.1/32 , or host routing? This is the longest match principle . Neighbor R3 filter-list 1 weight 4000 // match AS (100,2 ) and ( 200,2 ) Conduct a three-layer forwarding decision. The CEF table maintains core information extracted from the routing table, which is used to perform forwarding decisions on received messages, including IP prefixes, recursive next hop addresses, and outbound interfaces. An important feature of the CEF table is its ability to make immediate decisions about recursive prefixes. MacAddress Turn on switch interfaces Port-Security will consume resources, Port-Security detects an incoming interface to each data frame to determine whether the flow method, or if there offenses. When a security interface settings violation to shutdown when the interface is in violation No-export DHCP client broadcasts DHCP request Topology change mechanism (detection) Each group of GLBPs can have up to four member routers as ip default gateways. These gateways are called AVF ( active virtual forwarder ). Errdisable recovery cause arp-inspection Routing? / / This is used to match 11 routes 159 220 , 91 70 Match ip add pre 1 The default priority is 128 , the range is 0-255 , the smaller the better Must be zero Route metric is 0, traffic share count is 60 Metric ? Show pvlan mapping Origin IGP, metric 0, localpref 100, valid, internal, best Passive: passively wait for other side to ask If a psec port is punctured into err-disable , you can use the following methods to restore the state of the interface: (2) Declare the loop port 1.1.1.1224 R1 and R2 run OSPF , and announce the direct connection network and their respective LOOPBACK interfaces. R1 LO1 is 1.1.1.1 and R2 LO1 is 2.2.2.2. Device ID 100 Exit BEGIN Timer bgp 0 0 neighbor never goes down Router ospf 3 internal Situation 2 (global configuration mode) ip dhcp relay information trust-all BGP based policy accounting on input is disabled BGP based policy accounting on output is disabled Hardware idb is FastEthernet0/0 Two modes of operation: normal (the default) and aggressive When a data frame is sent from a trunk port, the frame is sent directly. Therefore, BGP automatically summarize ( Auto-the Summary ) Summary Only redistributed redistributed routes, and the use of network command routing incoming class declaration ways. Currently CISCO IOS turns off automatic summarization by default. 20 Management distance problem 43 or Enables multiple gateways to be used at the same time and automatically detects active gateways. Use RR Beta Route-map test per 10 Set as-path tag Maximum-paths 2 The configuration of R2 is as follows: BGP is a classless routing protocol, a distance vector routing protocol, and automatic summarization is turned off by default (this depends on IOS ). As a result , there is no vlan10 user on SW2 , and sw2 will flood the message so that other switches know. ip default-gateway ? Applications Layer 2 interface (switchport) : access mode, trunk mode ORF * 11.11.11.0/24 0.0.0.0 / / Kill 11.0 release all details except 11.0 Flag: 0x860 Then call the track object in the route-map Neighbor 3.3.3.3 remote-as 345 SW1#show ip dhcp snooping binding 3.3.3.3 Path Cause: After the ARP Request is sent , the ARP Reply is prepared for a large number of reasons: scanning on the same network segment (host), scanning across network segments (network device) Per packet load-sharing is disabled IP unicast RPF check is disabled Inbound access list is not set Outbound access list is not set The above four types are distinguished by the type code in the AS_PATH attribute. For the two federally unique AS_PATH types, please refer to the “Federal” section of this document for details. How do you understand the first two AS_PATHs ? Local origin Features Overview No off default route above configuration, adding a destined 13.0 network routing next hop is R3 , the PC to 13.0 data network switch to R3 proof ip default next-hop priority routing detail below, above Default route. Next hop 10.1.13.3, FastEthernet1/0 valid adjacency Establish BGP neighbor relations Redistribute ospf 1 The router is typically used to determine whether the inbound interface and the source and destination address type CEF exchange . For consider CEF of routers , the outbound interface must be configured to CEF exchange mode , if the interface is configured CEF, then CEF will attempt to exchange data package. Otherwise , CEF will deliver the packet to the next best available exchange method. // is equivalent to route-map not matching ( permit ) any entry, so all details are released RIPv2 supports authentication by changing the field in the RIP message that should normally be the first route entry . In the single update message with authentication , the maximum number of route entries that can be carried is reduced to 24 . 10.1.34.3 from 10.1.34.3 (3.3.3.3) Send BPDU The PVID is the "port default VLAN ID ", which means that a port belongs to the VLAN by default . Configuration Example 3 (at a single routing protocols -OSPF ) Weight On: channel member without negotiation ( no protocol ) s> 172.16.10.0/24 Full-duplex MAC : The physical layer operating mode provides access when full-duplex. If multiple next hop IPs are defined , when the local outbound interface associated with the first next hop is DOWN , it automatically switches to the next next-hop . Path Can affect BGP routing (before the equivalent load balancing), somewhat similar to " tie breaker " in the path selection, is to break the tangles when tangled After the summary command is added with the as-set keyword, the generated summary route can inherit some path attributes of the detailed route, thus avoiding some problems. The rules for inheriting detail attributes from as-set are as follows: Method two: neighbor xxx default-originate What are the components of CEF : Configured MAC Addresses : 0 !! Manually configured secure MAC address, not here Port The default priority is 128 , the range is 0-255 , the smaller the better Ip address 10.1.13.1 255.255.255.0 Configuration example R3 and R4 , R4 and R5 establish IBGP neighbor relationships,ccnp tshoot ping plan, and R3 R4 R5 uses LOOPBACK as the update source and refers to the neighbor . Both R1 and R2 are connected to the 2.2.2.0 network. At this time, R3 goes to ping 2.2.2.2 . Because the static route of the outgoing interface is used, R3 thinks that 2.2.2.0 is a locally connected network, so ARP request is sent , R1 , R2 , can receive the request message, and both respond to the request message (the premise two The MAC address is burned in the ROM of the Network Interface Controller (NIC ) . 1 Neighbor RC-ip remote-as 100 Experimental verification Passive-interface Fa0/0 After the Port-Security feature of an interface is activated, the default maximum number of secure addresses is 1 , that is, the interface uses its dynamically learned MAC address as a secure address without manually configuring a secure address. This interface is equivalent to being exclusive to the MAC (the device to which it belongs). And the default violation is shutdown 100 i Minimum path cost to the root bridge Is 2 , 3 with AS the first comparison, 2 is MED small it is preferable; 2 with a further comparison, since the opening of the always-compare-med Switchport private-vlan host-association 100 101 // Associate primary VLAN and secondary VLAN to interface switchport trunk encapsulation dot1q switchport mode trunk Authentication is identified by setting the address family ID field to all 1s ( 0xFFFF ). Length, or mask length. When paired with the above ACL , some students will even write Router(config-router)# distance ospf external ad1 inter-area ad2 intra-area ad3 Tftp: Database agent URL Type of data. Both of the above commands can be used to adjust the management distance of the routing protocol. The first command, distance ad ip-src , can adjust the management distance for a specific routing update source and a specific routing prefix. For example, I will use an OSPF. Some routes sent to me by the neighbor, the AD value is adjusted to 130 . In the federal scope, the member AS number is pushed into the AS_PATH , but not published outside the federation, and the AS_PATH of TYPE3 , 4 is used . 100 Y Ip address 10.1.13.3 255.255.255.0 Origin IGP, metric 0, localpref 100, valid, internal Route tag: A tag that distinguishes between internal routing protocol routes and external routing protocol routes. Neighbor maximum-prefix xx Internet (well-known community) A VLAN is generally a logical subnet composed of devices configured as members of this VLAN . It does not modify the original data frames, the processing efficiency than 802.1Q higher Then use set comm-list 1 delete to delete, pay attention to the above community-list writing, use multiple lines, the experimental verification results are in Note the tool. Here is actually a summary of the deployment of static routes, of course, in addition to we can also route summary in the dynamic routing protocol, almost all dynamic routing protocols support route summarization. Configure this command. When routing, the router only compares all routing entries with the AS_CONFED_SEQ attribute. This command is used for federated routers, while weight and LP have higher priority than MED. Configuration Example The idea of ​​configuration is that on R2 , you want to grab the fast0/0 port (that is, the one sent by R1 ) and go to the traffic of 30.30.30.0/24 . Document number Hostname R4 interface fa0/0 Use 224.0.0.9 14 Bgp fast-external-fallover No community attribute Verify again, instead of detailed routing, use a summary route of ip route 10.0.0.0 255.0.0.0 , the next hop is R3 , the effect is the same as above, also take R3 . Therefore, as long as it is not the default route, as long as there is such a matching route in the routing table, the route is taken preferentially, and the route-map is taken without the route . Both R1 and R2 inject 100.0.1.0 and 100.0.2.0 into BGP using network . OSPF and OSPF Optional non-delivery, generally used between AS to affect routing. Access port processing frame process Exit Neighbor R3 filter-list 2 weight 5000 It is recognized that the attribute must be followed to describe the next hop router to the destination. Lowest sender port ID The non- root bridge receives the TCN on its designated port Distance vector routing protocol The version of the last bgp table sent by TblVer to the neighbor Set ip next-hop { ip-address [...ip-address] | recursive ip-address } Connected, and can update and deliver BGP routes. Neighbor xxx password xxx Root SW1 receives the RLQ request and immediately responds with an RLQ response to inform that it is still alive. And the preferred order is: i > e > ? Access-list 1 deny 192.168.0.0 0.0.255.255 After deploying DAI , we can define the trust status of the switch interface: trusted , or untrusted , for trusted ports, it will not be received. IBGP established between neighbors neighbor, in order to ensure the stability of neighbor relations, general use loopback interfaces to establish, because if you use the physical interface, the physical interface failure, neighbor relations DOWN up, and AS inside, the path may be redundant LOOPBACK routes between neighbors can be obtained through IGP and provide some routing redundancy (when physical lines are also redundant). When establishing a BGP neighbor relationship using the loopback interface , be sure to specify the source IP address to be updated .