ccnp switch study plan

ccnp switch study plan

Access-list 1 permit 192.168.1.0 Not advertised to any peer Match ip address prefix-list 11 set as-path prepend 600 192.168.123.2 as the next hop better, then R2 subsequent packets sent to R2 . Sticky MAC Addresses : 0 !!sticky 's secure address, there is no Last Source Address:Vlan : 00b0.1111.2222:10 !! The nearest secure address +vlan Security Violation Count : 0 !! The number of violations that have occurred in the history of this interface 标准Add a standard community-list entry *Mar 1 00:11:47.891: ICMP: echo reply rcvd, src 2.2.2.2, dst 192.168.123.3 Set metric xx Internal EIGRP In the process of double-point bidirectional routing re-release, many problems may occur, such as sub-optimal paths, potential routing loops, etc. This chapter will discuss this model and existing problems in depth. ? Cluster ID . If the cluster contains multiple RRs , you need to manually configure the cluster ID for each RR . Fa0/20 Ip prefix-list 1 permit 11.11.11.0/24 route-map test per 10 100 When an RSTP switch receives a BPDU with the TC bit set , it will: !! wherein 2.2.2.2 is R2 of Router-ID , attention since 100.1.1.0 in R3 of OSPF If there are routes with the same prefix as follows (the default is sorted in reverse order of route acceptance order) R2 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. Remote-ID type *> 172.16.0.0 Shows all routes received from the specified neighbor (a subset of the previous command, shown here is the route remaining after the inbound policy is executed) RootGuard Neighbor 5.5.5.5 update-source Loopback0 Network 172.16.10.0 mask 255.255.255.0 Transition from the old routing protocol to the new routing protocol Ip prefix-list 2 permit 100.0.2.0/24 route-map WT2 permit 10 When a violation occurs, the interface enters the err-disable state. DHCP Configure BPDU is 0x00 and TCN BPDU is 0x80. Match interface s 0/0 FastEthernet1/0 ? The configuration of R2 is similar to the above. The key is to look at the configuration of R3 : Next hop 10.1.13.3, FastEthernet1/0 valid adjacency 100 SW2(config)# interface vlan 10 Example 2 : We can affect the routing by setting the LP value. For example, the same implementation allows R4 to access 100.0.1.0 and go to R3 , accessing 100.0.2.0. Weight When, the AS_PATH only AS300 ,ccnp switch study plan, 400 , and thus be B router to accept a summary of the article (because do not see their own AS number appears in 20 MED : 150 Definition of 1042 . The most commonly used encapsulation format today is the format defined by RFC894 , commonly referred to as Ethernet II or Ethernet DIX . 00:00:54 Associate route-map when route is re-published Set interface specifies how to send such a packet set ip default next-hop specifies the next hop to be forwarded set ip next-hop specifies the next hop to forward 16 bits Access-list 11 permit any route-map adv permit 10 match ip address 11 router bgp 12 200 300 VTP Version capable Set metric xx Configuration example (allocating community for routing ): 3.3.3.3 Except none 10.1.12.0 [110/128] via 10.1.23.2, 00:06:40, Serial0/0 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 description Metric LocPrf Weight I can't ping because I found a subnet route after looking up the table at 172.16.1.1 . Therefore, the search is limited to the subnet route, and then the route is found to be mismatched. Therefore, the packet is discarded directly without going through the default route. . No synchronization no auto-summary Ip sla monitor 1 Network Next Hop Root ID In Ethernet, multiple protocols can coexist simultaneously in a local area network. Therefore, setting the corresponding hexadecimal value in the Type field of Ethernet II provides a mechanism to support multi-protocol transmission in the LAN. In order to enable the ARP message sent by PC2 to be released, we first use the method of manually configuring the DHCP snooping bingding entry: Next Hop VLAN works on the second layer of the OSI reference model Initially, R3 can learn three loopback routes from R1 and 192.168.12.0/24 routes. Now we don't want R3 to learn the route to 192.168.3.0/24 , then we can configure it on R2 as follows: Reissued by an early agreement like EGP PVST+ Path *>i100.0.1.0/24 192.168.2.0/24 Route-map test permit 10 bibliography SW3 immediately aging the BPDU stored on Fa0/3 , and port Fa0/3 enters the listening state and starts to send BPDUs. Option 82 can contain multiple suboptions , and rfc3046 defines the following two: Show interface | include bia The configuration of R3 is as follows: Set ip address prefix-list Passive-interface Conditional delivery of default routes routing meaning 3.3.3.3 ( metric 2 ) from 3.3.3.3 (3.3.3.3) After receiving the packet check, R2 finds that this is the IP of the same subnet as the interface that accepts the update package , so accept this update. Therefore, this test, although the interface masks on both sides are different, but can accept each other's updates, and can also ping between 1.1.1.1 and 2.2.2.2 . Weight Next Hop The EBGP route should be better. I saw R5 and went to see R3 : * i100.0.1.0/24 As a result, all three switches exchange VTP packets to inform them that there is a VLAN for accessing users . For VLANs that do not have users locally , they will be automatically trimmed. Let's take a look: So in R1 on can learn 3.3.3.0 route, R1 routing table is as follows: 46-1500 bytes; set mtu xxxx under the interface , which means this, and generally does not allow We found R4 on the R3 passed over 100.0.1.0 this route, AS_PATH to 100 100 , from R5 over is 200 , apparent from R5 to the routing AS_PATH shorter, it is preferred by R5 to R2 route. The basic configuration is as follows: Vlans in spanning tree forwarding state and not pruned Configuration example 46 Not advertised to any peer Router os 1 Sw1(config-if-range)#no switchport // Configure the L3 interface Use decimal. RFC format is 12 : 10000 , hexadecimal is 0x 000C2710 , and then converted to decimal 796432 R1 and R3 , R2, and R5 establish an EBGP neighbor relationship. 3.3.3.3 When a data frame is sent from the Hybrid port, the switch determines whether the attribute of the VLAN on the port is Untag or Tag . If it is Untag , first strip the VLAN tag of the frame and then send it; if it is a Tag , send the frame directly. A tool used to control routing updates can only filter routing information and cannot filter LSAs . The 10.1.10.0/25 subnet cannot be updated because the subnet and the update source interface belong to the same main class network, but the masks are different. When using Ip default-network to refer to a network locally, if the network number exists in the routing table, the router will designate the network as the default gateway. STP operation Multilink Multilink-group interface (64513) 200 i The configuration of R2 is similar to the above. The key is to look at the configuration of R3 : Static 9.9.23.0 is directly connected, FastEthernet0/0 Community value (route), then how to write it? If you directly match no-export , it will match with 11.11.11.0 , so you should use the exact-match keyword. If configured on R3 as follows: Figure 1 R1 , R3 while the R2 release 13.13.13.0 of BGP routing, do not have any strategy Bgp deterministic-med ! ? 200 Part of static configuration, part of dynamic learning Option82 Repeat, you can configure multiple Network 172.16.11.0 mask 255.255.255.0 Ip address 100.0.1.1 255.255.255.0 4 If R1 turns on auto-summary and network 1.0.0.0 , R2 can learn summary route 1.0.0.0/8 Ip detects whether the IP address in the ARP body is invalid or unexpected, such as 0.0.0.0 , 255.255.255.255 , and multicast IP address, which are considered invalid IP . SenderIP verifies whether the message is an ARP request or response . And targetIP only if the message is the ARP response will be verified when The medium to root has the least overhead, so the uplink port is RP . SW3 is different. Since the bandwidth of the interface connected to root is only 10M , the interface connecting SW2 wins as RP . Finally choose DP . I won't go into details. Try to establish a TCP connection Routing? The key point is that R2 , through the R2 deployment redistributed routing , routing information may be selected in different transmission routes between the domains. Ip default-network 172.16.0.0 Cisco Express Forwarding Switch(config)# interface fast0/15 DMZ-Link Bw can only configure single-hop EBGP neighbors on this router. 802.3 uses the length field, but the Ethernet frame uses the type field to identify the protocol at the network layer. In an Ethernet II frame, a two-byte type field is used to identify the higher layer protocol contained in the data field, that is, this field tells the receiving device how to interpret the data field. 200 You can use route-map in the following BGP commands. Switch(config)# vlan 255 Switch(config)# interface fast0/15 Switch(config-if)# switchport mode trunk Switch(config)# interface vlan 10 100 i Send Keepalive bag CASE4 : s> 172.16.2.0/24 Redistribute static subnets BGP comes in 1 and other routes are 20 , and the metric between OSPF remains unchanged. When a router connects through a multi-access medium such as Ethernet, a dynamic mechanism is needed to discover each other, such as ARP . ARP can map Layer 2 addresses to IP . If it is a frame relay multipoint link, the adjacency relationship can be learned by using an address resolution protocol, a mapping table, and the like. Path cost New link Link1 between A and Root The configuration of R2 is as follows: In the above figure, we inject OSPF routes into RIP . Traditionally, you can only set metrics on all incoming routes . However, with route-map , we can associate a defined one when configuring re-issue commands. A good route-map , in the route-map , we can create different properties or actions for different routes by creating multiple serial number statements. Although RIP is running between R1 and R2 , the routes of 1.1.1.0 and 2.2.2.0 are updated with each other , but since R1 is from RIP and his When 10.4.0.0 is hanged , C will immediately send a route poisoning message ( 10.4.0.0 16 hops) and then advertise it; Fast switching is superior to process switching, it uses a route cache ( route cache ) for storing information about a stream of data (Flow) specific information , There are two types of Layer 3 interfaces, one is SVI above we have already discussed, the other is routed port , or no switchport . Note that the SVI port is a virtual interface and the routed port is a physical interface. The Layer 3 switch supports the physical interface as a Layer 3 interface similar to the physical interface of the router. The specific configuration is to enter the configuration mode of a specific interface. After the no switchport command is used, the interface becomes an L3 routing interface. You can Configuring IP for him is like operating an Ethernet port on a router to operate it.