ccnp route ospf evaluation sim

ccnp route ospf evaluation sim

Path cost Displays all BGP routes received from the specified neighbor (original route before the local inbound policy is executed) The route obtained by the BGP speaker from IBGP is not advertised to its IBGP neighbors (avoiding loops and splitting horizontally; except for the case of route RR ) Port-Security supports activation on the trunk configured as follows Next hop Port-Security Overview Ip dhcp relay information trust-all 10.1.13.1 In RIPv1 based on the increase The configuration of R1 is as follows: R4#show ip bgp 172.16.0.0 Confirmation of TCA ( MSB set) to the previous switch. When the root receives the TC , it sends the TCA back to the original sending switch and sends the TC ( LSA set) to all bridges . Switch receives ROOT issued to TC after, will MAC aging time address table is reduced to 15s Backup port: Discard status. A backup of a specified port occurs when a switch has two ports connected to the same shared medium. All devices in a VLAN are in the same broadcast domain, and different VLANs are different broadcast domains. Load balancing: round-robin Group members: By default , Cisco routers enable fast switching or optimal switching or cef switching instead of process No synchronization no auto-summary Set next-hop specifies the address of the next hop , specifying the next hop of BGP . Bgp confederation identifier 345 bgp confederation peers 64512 neighbor 4.4.4.4 remote-as 64512 Passive: passively wait for other side to ask Network 10.1.45.0 0.0.0.255 area 0 To control, the most simple and convenient. 100 i By default, only med of routes from the same AS are compared. If you want to compare MED for all paths , you should configure this command. Also, if this option is used, it is recommended to do this throughout the AS to avoid routing loops. (1) Declare the loop port 2.2.2.2224 Again rule 11 , it seems to take effect, but this time the R3 of BGP routerID than reform R4 large, found R5 Still preferably R4 , because "If a path contains RR properties, producer ID to select the optimal path during Instead of RID ” Redis static route-map cisco Isis Generally seen between switches or between switches and routers and servers If there is a tag , it is determined whether the trunk port allows the VLAN frame to enter. Allow the next step, otherwise discard the frame. STP port status Ip address 192.168.10.254 255.255.255.0 After the completion, the two PCs can communicate with each other. Routing? // in R3 is only 1.1.1.0 route, that distribute-list 1 out here this command, all externally injected into the Switch(config)# vlan dot1q tag native The original attribute is i , so R3 and R4 learn BGP route 1.1.1.0 from R1 and R2 at the same time . After the decision, the traffic to 1.1.1.0 will be sent from R2 to R1 , so the sub-optimal path is obtained. Show ip bgp flap PAgP mode: Origin IGP, metric 0, localpref 100, valid, internal, best Using reflector You can also configure DAI to discard the Ethernet frame source MAC and ARP body in the MAC illegal inconsistent ARP . This is followed by a further introduction. Switch(config-if)# switchport port-security aging type {absolute | inactivity} If it is injected through network or re-release, the IGP next hop of the prefix will be the next-hop of BGP before injection. 192.1.168.1 3 0003.47d8.c91f 2BB6488E interface-id 21ae5fbb Redundant RR environment CCIE.txt format: The difference between set ip next-hop and set ip default next-hop is relatively simple, it is not resolved here. On: channel member without negotiation ( no protocol ) The current Ethernet implementation is such a service. 16/32 bit When both DSAP and SSAP take a specific value of 0xff , the 802.3 frame becomes a Netware-ETHERNET frame to carry NetWare. FastEthernet FastEthernet IEEE 802.3 Remove VLANs from the current list The comparison principle of OE2 is first compared to the external metric of OE2 . If they are equal, further comparison of the internal metric is the metric to the ASBR . 1-4094 R1(config-router)# network 192.168.12.1 0.0.0.0 area 0 R1(config-router)# distribute-list 1 out Route-map test permit 10 set community ? R 1.1.1.0/24 is possibly down, If multiple path originating router IDs or router IDs are the same, then the shortest path of the Cluster-List is preferred . Match ip address pref 1 set local-preference 100 Ip address 10.1.13.1 255.255.255.0 r route is not loaded into the RIB table, for example due to AD values, etc. R1#show glbp No synchronization no auto-summary Route . 3 : the AS_PATH : 500 the MED : 150 External RouterID : 172.16.13.1 Match ip address matches the access list or prefix list 201 Preferred to the nearest route to BGP NEXT_HOP 21 The solution is as follows: 1. On the R3 , declare the directly connected network segment of 10.1.13.0 into OSPF , and R5 is the same; 2. Modify it on R3 . [123].[7-9] Ip address 10.1.25.5 255.255.255.0 Access-list 2 permit 172.16.20.0 route-map BGP2OSPF permit 10 100 100 i Not the routerID of R1 , because it is not necessary at all). 200 i Pay attention to the changes in our experimental environment. The community value carried in 12.12.12.0 is no-export , if we only want to match no-export 100 * i100.0.2.0/24 At this time, on R4 , only 1.1.1.0/24 and 192.168.13.0/24 can be learned. EtherChannel supports load balancing in the same port-channel link Access-list 2 permit 192.168.3.0 Ip dhcp snooping Known via "ospf 1", distance 110, metric 20 Gateway of last resort is not set 9.0.0.0/24 is subnetted, 2 subnets Ip prefix-list 11 permit 11.11.11.0/24 route-map test permit 10 Set interface priority, CISCO IOS default 128 ; CatOS default 32 Set ip next-hop recursive 13 Experimental description Interface loopback0 If it is injected through the aggregate-address command, next-hop is equal to the update source IP of the summary router . [Synchronization concept] After a BGP router learns a route from an IBGP neighbor,ccnp route ospf evaluation sim, it is not enabled (not optimized) unless it learns the same route from the IGP again . This is to prevent the routing black hole problem described above. 200 i Network The so-called one-arm routing is on the Ethernet port of the router (must be above 100M interface) to carry VLAN traffic, let the router and switch run a trunk , use dot1Q encapsulation, at this time, in order to let the router's Ethernet port support Dot1Q To identify and carry VLAN traffic, you need to divide the subinterface of the physical interface, as shown in the figure above. 16 bytes Switch(config)# vtp mode {server | client | transparent} The keyword should be added, otherwise the main class route will only be re-published. 2> Dynamic inbound soft reset 3.0.0.0/24 is subnetted, 1 subnets 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. When the route-map is executed, the match statement contained in the policy-list called by it will be traversed and the match action will be executed . Ip dhcp snooping verify mac-address Configured MAC Addresses : 0 !! Manually configured secure MAC address, not here Matchlog keyword in this command and the log keyword in the permit or deny ARP access-list 2) Activate TC while timer , and then send the TC- set BPDU out from all non-edge designated ports and root ports . In this way, topology change information quickly floods the network. Aggregate-address 192.168.0.0 255.255.0.0 as-set advertise-map adv Suppression list Although route-map is called , route-map can only be used for matching, not for setting attributes (cannot use set command) Switch(config)# vlan 10 RIPV1 operating behavior Used to announce aggregated and selected detail routes (suppress specific detail routes), followed by route-map xxx , matched by route-map 10.1.13.3 100:200 , 100 of which will not be said, AS200 said that this conditional route is for AS200 . If the ibgp keyword is not associated , only EBGP routes will be equivalently load balanced (by default only for EBGP routes). If maximum-paths is not configured , the next routing principle will be followed. The new routing table is typically sent to neighboring routers on a regular basis, and the triggered update is sent immediately in response to changes in the routing table. Ip route 0.0.0.0 0.0.0.0 192.168.23.3 Next turn on DAI on SW1 : * i100.0.1.0/24 Arp replies sent: 3 Forwarder 2 After completing the configuration, R2 show ip route Routing entry for 192.168.1.0/24 : 000a.8a07.8280 ? * i If the configuration revision number of the VTP client is higher than that of the server , the client can also overwrite the vlan information of the server . Below we summarize some of the key points of the router about route lookup: Path After deploying DAI , we can define the trust status of the switch interface: trusted , or untrusted , for trusted ports, it will not be received. The lower the value is set, the higher the protection level for the CPU . This value takes effect before and after the penalty action occurs. Of course, this value cannot be set too low. At least the legal traffic must be processed. Generally less than 1000 is almost the same. VLSM support Origin IGP, metric 0, localpref 100, valid, internal Local The port mac of the Layer 2 switch is used here :) Static Routing Configuration BGP routing table entry for 11.11.11.0/24, version 2 Network 100.0.1.0 mask 255.255.255.0 1 Maximum inhibition time: 60 minutes ( four times the half-life ) Neighbor 1.1.23.2 send-community Name server Distance vector routing protocol / / View the routing flip situation Assigning community 100:11 to route 11.11.11.0/24 on R1 and passing it to R2 , then R1 is configured as follows: 10.1.13.3 Load balancing actions can be based on MAC , port, IP (source IP , destination IP, or both) Router ospf 3 Each update message describes only a single BGP route. This is because the BGP path attribute can only describe a single route. The interface will only receive updates, no updates will be sent. Fa0/20 As a result , the BGP table of R5 becomes as follows: In CISCO IOS , CEF can hash the source and destination IP addresses and import the hashed results into a load balancing table for load balancing. This table has 16 hash buckets , each of which points to an adjacency, and multiple buckets can point to an adjacency at the same time. You can use the show ip cef route prefix internal hidden command to see: Reviewer Basic VLAN concept Bgp confederation identifier 345 bgp confederation peers 64512 neighbor 4.4.4.4 remote-as 64512 Neighbor 5.5.5.5 weight 100 Ip dhcp snooping trust The GW configuration is as follows: Length of the suboption type Set community no-advertise route-map setCommu permit 10 router bgp 300 10.1.34.3 Metric If an error occurs after receiving the open message, a Notification message is sent . If not R1 releases 10.0 , R2 releases 20.0 , and R3 issues 30.0 routes. Next, look at the different commands (keywords) configured on R2 . These BGP routes are learned by the specific router after the AS_PATH changes: ! Is 2 , 3 with AS the first comparison, 2 is MED small it is preferable; 2 with a further comparison, one of external routes it is preferably ( MED not compare) Must be zero 10.1.13.3 If you want to modify the weight , let R4 go to 100.0.1.0 and go to R3 to go to 100.0.2.0 and go to R5 ? Then the configuration is modified as follows: BGP routing table entry for 1.1.1.0/24, version 2 // is equivalent to route-map not matching ( permit ) any entry, so all details are released ? Forward doing what The configuration of SW2 is as follows: Scp: Database agent URL Management adjustments 10.1.23.2 Route-map test permit 10 match ip address 1 8 bits Technical overview Experiment 1 If the route is marked d , it means that the route is suppressed. If it is h , it means that the route has signs of flipping. 10.1.13.1 Kanga sends an arp request, requesting Milne 's mac , then learner So if we use a solution that re-releases static summary routes: If the static keyword is not used , the ARP packet will be matched by the ARP ACL . If there is no match, the DHCP snooping database security entry will be checked again. If there is a valid entry, the data will be released. If not, discard it. When the GW loses the route to 10.1.12.2 and the connection to ISP2 is also lost, then the default route is taken. 10.1.13.3 In Ethernet, the value of CFI is 0 . As a result, there is no problem with route delivery. Match ip address 1 set metric 10 Situation 1 The configuration of R1 is as follows: 5.5.5.5 Store the result of the CRC cyclic redundancy check The configuration of R2 is as follows: Write-delay Configure delay timer for writes to URL Synthesis example 1 : * i Double-point bidirectional routing re-release 91 When a data frame is sent from a trunk port, the frame is sent directly. Ip address 10.1.13.3 255.255.255.0 Set as-path set community RouterID : 172.16.8.1 Next Hop * i100.0.1.0/24 BGP configuration Access-list 2 permit 172.16.20.0 route-map BGP2OSPF permit 10 These are all done by VTP pruning auto-negotiation. Experiment 3 !IP address Ip rip triggered SW1 and SW2 are configured as VTP mode client ; SW3 is configured as VTP mode Server When the RR reflects the route from the client to the non-customer, it also appends its cluster ID to the CLUSTER_LIST , and if the CLUSTER_LIST is empty, it creates one. If the route reflector finds that its local cluster ID appears in the CLUSTER_LIST of the route it received , then it knows that a loop has occurred and ignores the route. The CLUSTER_LIST attribute is only used for RR anti-rings.