ccnp route chris bryant pdf

ccnp route chris bryant pdf

? Topology change mechanism (detection) Add the following configuration on R5 : Configure additional verification actions If the result of the search finds an exact match, the data is forwarded according to the returned port number. The IEEE802.3 frame can be divided into the following categories according to the values ​​of the DSAP and SSAP fields: BGP , the IBGP neighbor relationship is established between the BEs . If A has a network segment 1.1.1.0 , A injected into the BGP , and transmitted to the EBGP neighbors B , 300, ( aggregated by 300 3.3.3.3 ) DAI working mechanism 192.168.12.2/24 BGP must be identifiable, update messages can include EIGRP summary routing Redistribute connected subnets redistribute rip metric 10 subnets Path Load balancing actions can be based on MAC , port, IP (source IP , destination IP, or both) | Redistribute ospf 1 match nssa-external 1 nssa-external 2 (1) can learn the routing entries of R2 update, and the routing table is loaded with Lab 2 : The access switch is plugged into option82 and the core switch is relayed. This property may not be supported, but even if it is not supported, the route containing the property should be accepted and passed R3 sets the tag when injecting the route. Ip prefix-list 100 permit 100.100.100.0/24 route-map COST1 permit 10 Ip policy-list as100 permit match as-path 1 Set the timer of STP The configuration of R2 is as follows: LocPrf In the establish state, the status prompt is not displayed, and a number indicating PfxRcd is displayed , that is, the prefix entry received from the neighbor. The range is 1-255 5 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 . Block the interface of SW3 . Advertised to update-groups: 1 *>i100.0.2.0/24 Router# sh ip bgp summary R3 and R4 , R4 and R5 establish IBGP neighbor relationships, and R3 R4 R5 uses LOOPBACK as the update source and refers to the neighbor . EGP Set traffic-index 30 Bridge using these 4 steps to save each port received the " best " of the BPDU a copy. When each BPDU arrives, it will check according to this 4- step decision step to see if it has a better BPDU saved on the port . If it is, it will be updated. Router bgp 345 Switchport access vlan 100 interface fast0/24 100 i IBGP neighbor 200 i There are classes and classless route lookup mode Layer 2 interface (switchport) : access mode, trunk mode Router bgp 345 The configuration of R5 is as follows: IP Address * i100.0.2.0/24 ? Define a maximum value: define the maximum number of hops 15 hops, 16 hops unreachable to avoid routing loops Flooding the MAC table to the above port * i100.0.1.0/24 Remove the command configured on SW1 in step 2 to restore the experimental environment. 10.1.12.1 from 10.1.12.1 (1.1.1.1) You can use route-map in the following BGP commands. STP and RSTP port comparison: Scp: Database agent URL 14 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) None Configure channel-group on the interface. Configure the secure address of each interface ( Secure MAC Address ) Origin IGP, metric 0, localpref 100, valid, external, best In this way, the summary route inherits the detailed AS_PATH attribute, so atomic_aggregate is redundant. Therefore, in the above case, the generated summary route does not carry atomic_aggregate . Let's see: At this time we look at the state of the trunk on SW1 : Y *>i100.0.1.0/24 Next Hop 5.5.5.5 Network 100.0.1.0 mask 255.255.255.0 Then call the track object in the route-map Network Switch(config)# vlan 255 Switch(config)# interface fast0/1 This is a very typical case. In the above figure, the network environment is like this. Suppose we have two routers, R1 and R2 , connected to the server farm. The server farm uses two three-layer switches to hang the network server. We have planned two subnets for production of 10.1.1.0/24 and office 10.1.2.0/24 . R3 is the access router. R1 , R2 , and R3 run OSPF . Fa0/20 The configured static network path is redistributed into OSPF . In this way, when the intranet user needs to access the Netcom resources, because of the details of the network access, go to OR1 . To access other resources, take the default route to OR2 . Neighbor 10.1.25.5 remote-as 345 no auto-summary ! 100 i End of a string The adjacency list in the CEF component is used for MAC or Layer 2 rewrite information. An important improvement in RSTP is the rapid transition of ports. The traditional STP algorithm needs to go through several timers before transitioning an interface to the forwarding state. In order to get a fast convergence of the network, we may adjust the timer, but this method may affect the stability of the network. 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 . So in fact this is a macro command Address Remarks FastEthernet1/0 By default, only the MED values of BGP routes from the same neighbor AS are compared , that is, if the two routes of the same destination are from different Manually configure a secure address on the trunk interface to associate the vlan keyword. If the security address is manually configured on the trunk interface and the vlan keyword is not associated , the security address will be associated with the native vlan of the trunk . No community attribute Ip route 10.1.2.0 255.255.255.0 10.1.254.1 s> 172.16.1.0/24 Create secure addresses through dynamic learning, manual configuration, and stciky i Etc., then there is a prioritization between these methods: network>redistribute>aggregate Note that this principle is not used as a BGP routing routing policy. Application example R1(config-router)# network 192.168.12.1 0.0.0.0 area 0 R1(config-router)# distribute-list 1 out Ip policy route-map PBR *>i1.1.1.0/24 Exit The GW configuration is as follows: Origin IGP, metric 0, localpref 100, valid, external, best Access permanent nontrunking mode and negotiate with the peer interface to make it a nontrunking link 3 : MD5 verification. CFI The Response packet contains a maximum of 25 routing entries. ? Automatic summary R1(config-router)# network 11.11.11.0 mask 255.255.255.0 [Experiment 4 ] There is a main class network; there is a subnet route (match), the longest match Take the configuration of R2 as an example: RR can modify the cluster-id Show ip cef exact-route src-addr dest-addr Timer verification Configure OSPF unicast updates: distribute-list 2 METRIC After receiving the BPDU sent by SW3, SW2 stops sending its own BPDU. The Layer 2 interface contains access mode and trunk mode that we are very familiar with . All physical interfaces of the switch are Layer 2 interfaces by default, which is switchport . The default native vlan is vlan 1 Next Hop BGP table on R4 : Each sequence number statement in the Route-map is equivalent to each row in the access control list. Top-down processing in the order of the serial number, once the matching sequence is found, it will not continue to search. Access-list 1 permit 1.1.1.0 0.0.0.3 route-map test permit 10 Solution: Avoid the problem of sub-optimal routing by re-publishing static summary routes. or Each cluster has a unique cluster ID Ip route-cache flow show ip cache flow Class and classless route lookup mode 9 Metric Aggregate-address summary address suppress-map xxx as-set Determine if the frame has a VLAN tag . Length of the suboption type {100,200} i R5 performs link redundancy. However, at this moment, R5 can only go to the target network through R2 . LocPrf As a result , the BGP table of R5 becomes as follows: Timers Load balancing This is a feature that is used in large and medium-sized networks to make the configuration "modular". Switchport Sw1(config-if-range)#no switchport // Configure the L3 interface Weight Routing, accept updates. 标准Add a standard community-list entry *> If you try to activate 8021.X on a port-security interface, you will get an error and the 802.1X function will not open. Redis static route-map cisco Experimental verification The version of the last bgp table sent by TblVer to the neighbor Run RIPv2 , the default R1 update 1.0.0.0/8 is summarized to R2 , and the automatic summary is closed on R1 , then R2 learns to 1.1.1.0/24 , and since it still starts automatic summarization, the update to R3 is 1.0.0.0. /8 . This time if R2 on ip route 1.1.1.0 255.255.255.0 null0 , then R2 is routed on the table 1.1.1.0 becomes static static routing, and the R2 is no longer to R3 updated RIP 's Also pay attention to the sending conditions of ICMP redirects here . At the same time, note that this default route on R3 , if configured to associate with the outbound interface, can not observe the phenomenon of redirection, as for the reason, you know, proxy ARP . Use a static route to the next hop Manual bindings are IP addresses that have been manually mapped to the MAC addresses of hosts that are found in the DHCP database. Manual bindings are stored in NVRAM on the DHCP server. Manual Authentication Type Router bgp x 3.3.3.3 100 The configuration of R5 is as follows: * 172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks S* 172.16.0.0/16 [1/0] via 172.16.3.0 10.1.13.1 Ip community-list standard del permit no-export route-map test permit 10 Neighbor 10.1.23.3 remote-as 300 neighbor 10.1.23.3 route-map test out Configured MAC Addresses : 0 !! Manually configured secure MAC address, not here When an activation of the Port-Security on the interface, MAC number of addresses has reached the maximum safe number of address configuration, and has received a new frame, and the source of this data frame MAC is not in these security addresses, then start punishment *> 100.0.1.0/24 The smaller the MED, the higher the priority SW1(config-if)# glbp 1 load-balancing host-dependent !! The same PC (source MAC ) is assigned to a fixed gateway virtual MAC Interface vlan 10 10.10.10.0/24 Network Compatibility 37 100 BGP Both R1 and R2 inject 100.0.1.0 and 100.0.2.0 into BGP using network . We look R5 are BGP table: Number_of_messages will also become 0 . Use ip community-list to match the community value Through AS_PATH affect route choice 14 Distance 100 192.168.12.1 0.0.0.0 1 ^ Policy-list s> 172.16.11.0/24 BGP routing table entry for 172.16.0.0/16, version 3 The configuration of R3 is as follows: Redistribute routes to the protocol Store the result of the CRC cyclic redundancy check Next, look at RP , SW2 has two interfaces,ccnp route chris bryant pdf, both of which will receive BPDUs , all from SW1 , so the cost of the first two BPDUs to root is 0 , equal; the sender ID of the sender is due to the same switch, and therefore equal, less out; and then compare the two BPDU port ID , that is, SW1 on both port interface ID , we assume that the two interfaces equal priority, then the ratio of these two ports The interface ID , and finally select the root port F0/1 on SW2 .