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ccnp routing and switching salary

ccnp routing and switching salary


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    ccnp routing and switching salary

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  • Multicast capability Passed between peers . If the route attribute of the route received between EBGP peers carries Local Preference , it will be triggered. Set community no-advertise route-map test permit 20 Next hop 10.1.13.3, FastEthernet1/0 valid adjacency DMZ-Link Bw 12500 kbytes 5.5.5.5 ( metric 2 ) from 5.5.5.5 (5.5.5.5) Match interface s 0/0 SW1(config)# interface fast0/23 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) Load balancing mode 16 The direct result of this command is that the metric of 192.168.12.0 in R3's original routing table is 30720 , but now it is 10000 , which becomes 40720 . We see that after the offset command is configured , what actually changes is the DLY that is updated to the neighbor . Because it is true that DLY is the best, the default Community We look at the above picture, the external detail route 172.16.32.0 – 39.0/24 , and the summary route 32.0/21 are introduced into OSPF by R1 , now Router bgp 345 IBGP session principle Modify the default AD value of BGP . The command is as follows: The LSA sends the neighbor to the neighbor, so the local route is filtered, and the neighbor has (because the neighbor has received the LSA ). Bgp confederation identifier 345 neighbor 4.4.4.4 remote-as 64512 neighbor 4.4.4.4 update-source Loopback0 ACL 70 Therefore, AVG is responsible for distributing virtual MACs , and AVF is responsible for forwarding data. Ip route 0.0.0.0 0.0.0.0 192.168.23.3 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. (Of course, in the case of FA=0.0.0.0 ), then, in this figure, if the cost of R2 to ASBR-R3 is smaller, the final R2 will be preferred. ICMP redirect 8 BGP table version is 4, local router ID is 4.4.4.4 Mtu 1500 , so it will be fragmented, then on R2 , the two fragments are reorganized. Ip address 192.168.10.254 255.255.255.0 Origin IGP, metric 0, localpref 100, valid, external, multipath Ip dhcp snooping vlan 10 Interface fast0/1 A multiply character can be applied to a single character or multiple characters. If applied to multiple characters, put the string in (). BGP stipulates that routes learned through one IBGP are not propagated to all other IBGP neighbors. This is the horizontal split rule of BGP . Network topology and interconnection IP address planning as shown On R1 , default information originate is also formed, and R2 and R3 will learn the default route of 0/0 . This command is for RIP Several problems with VTP Start a TC while timer for the root port and all non-edge designated ports . The timer value is equal to 2 times the hello-time timer. Displays all BGP routes received from the specified neighbor (original route before the local inbound policy is executed) R2(config)# router eigrp 100 Still looking at the picture, if the middle network is not a broadcast multi-access network, but a frame relay network, then it should be noted that the route received by C , The least significant bit of the LSB indicates the TC flag; the most significant bit of the MSB indicates the TCA flag. The configuration of the DHCPserver is as follows: Once the portfast port is connected to the device, the interface can bypass the listening and learning states and enter the forwarding state directly . No auto-summary Switch(config)# ip default-gateway 192.168.255.254 !! Set the gateway for the access switch itself Experimental topology and description 1 Neighbor 3.3.3.3 update-source Loopback0 neighbor 5.5.5.5 remote-as 64513 Reply to ISP1 , GW perceives through tracking , and the data is switched back to ISP1. COMMUNITY attribute is set . 4 th 8 value bit group, RFC1997 predetermined front 2B represents AS number, after 2B represents the basis for management purposes set identifier, the format of AA : NN , and CISCO default display format is NN : AA , may be used The global configuration command ip bgpcommunity new-format changes the CISCO default format to RFC format. learner Figure 1 R1 , R3 while the R2 release 13.13.13.0 of BGP routing, do not have any strategy Network 192.168.23.2 0.0.0.0 area 0 distribute-list route-map test in Unsuppress-map Ipv6 does not support The OSPF metric on R4 going to 3.3.3.3 becomes 101 , which is larger than the metric going to 5.5.5.5 . Therefore, R4 goes to The address of the slave is the optimal next hop address. Trunking ^100$ If the route is passed from an IBGP neighbor and is introduced by the BGP router in the AS Now we adjust weight values to influence R4 on about 100.0.1.0 and 2.0 routed such that R4 preferably R5 2 : Reponse message, send all or part of its routing information, one Troubleshooting 33 GLBP automatically manages the allocation of virtual MAC addresses and decides who is responsible for handling the forwarding work. These functions are performed by AVG ( active virtual The configured commands are simple: As the next hop to 100.0.1.0 and 2.0 . In the R4 on R4 to R3 configured as Client , then it will be able to break through the limitation of split level, will learn from R3 route reflector to R5 , will learn from R5 route reflection of self- R3 . Let's look at R5 of the BGP table: Modify the AD value of EIGRP As a result, there is no problem with route delivery. The "original Ethernet frame" is up to 1518 bytes, the IP MTU of 1500 , plus the source destination MAC address is 12 , the type field is 2 , CRC4 , plus 30 bytes of ISL encapsulation, which is 1548 bytes. Errdisable recovery cause arp-inspection 159 220 , 91 70 Show ip dhcp binding Show dhcp binding on DHCP server With object tracking, PBR can be more flexible, and can make decisions based on ICMP , HTTP , the presence or absence of a route in the routing table, and the up/down of the interface . : Disabled Each update message describes only a single BGP route. This is because the BGP path attribute can only describe a single route. Both Ip route 0.0.0.0 0.0.0.0 192.168.23.3 (64513) 200 i Then IOS will automatically change the command to Set ip next-hop ip1 ip2 ...... The mapped ethernet vlan will be blocked Commands 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 . Switched network management Protected ports are not able to communicate with each other although they are in the same VLAN . This is the general case, of course, there are two situations, it depends on the specific environment and the specific routing protocol. Router bgp 345 Router bgp 200 10.1.13.1 Service dhcp Set ip next-hop verify-availability [ next-hop-address sequence track object ] Ip route 172.16.1.0 255.255.255.224 192.168.23.3 !! Press the longest match, go this one Router ospf 100 If the static route configured by the outbound interface is configured, the router considers the destination network segment as a local direct connection . Therefore , when the RIP is in the network , it will be announced. RIP secondary address problem Using route reflector 23 When track1 is true , that is, 10.1.1.2 is reachable, the data of the PC accessing the 100 network is lost to 10.1.1.2 . If track 1 is hung, the next next-hop is switched. FastEthernet0/0 Command Summary The LP attribute of the route is preserved throughout the federation None Neighbor 1.1.1.1 remote-as 123 BGP configuration Ip route 10.1.2.0 255.255.255.0 10.1.254.1 Routing Protocols RIP update source problem LocPrf Remarks Types of . Neighbor IBGP_peers update-source loopback0 neighbor IBGP_peers password cisco It is actually an order with the following, so knocking in, show has become the following stuff. METRIC Ip prefix-list ABC seq 5 permit 0.0.0.0/0 le 32 65 Must be zero Path Route summary technology background Ip local policy route-map x Note: If CDP- based detection and object tracking- based detection are applied, the latter is preferred. Distance vector routing protocol Off: EtherChannel not configured on interface Off: EtherChannel not configured on interface In 802.1q the native vlan is untagged,ccnp routing and switching salary, using Dot1q switches all unmarked frame is forwarded to the native vlan in the ISL on all data frames, including native vlan encapsulation, so if the package is not received The data frame will be discarded (the ISL does not have the concept of a native VLAN ). Ip prefix-list 30 permit 30.30.30.0/24 route-map setComm permit 10 Route metric is 0, traffic share count is 1 Router(config-router)# passive-interface int- type int-num Aggregate-address summary address as-set advertise-map In the routing table of R3 , there is only 1.1.1.0 route. Set the interface to access mode If the result of the search finds an exact match, the data is forwarded according to the returned port number. 32768 *> 100.0.1.0/24 None Looking at the above picture, we made a manual route summary on R3 . This summary route was generated by R3 and passed to R4 . At this time, the AS_PATH of this summary route is 300 , and the detailed route under it is lost. AS_PATH attribute, then if R4 and R1 or 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 . Public Redirect time 600 sec, forwarder time-out 14400 sec Preemption disabled Invalid timer Interface fast0/24 Match ip address Route-map test deny 10 The default bridge priority of the switch is increased to a higher value than the default ( 32768->49152 ) so that the switch does not become Root. 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. Ip community-list 1 permit no-export route-map test permit 10 100 Route tag Tag 73 RouterID : 172.16.13.1 Therefore, when the IGP route network into BGP , the MED value inherits the metric value in the IGP protocol. External On R2 and R3 , there are two OSPF processes. If shown, one is OSPF1 and the other is OSPF2 . Note that this dual process is mainly implemented on the two ASBRs R2 and R3 . Bgp deterministic-med What package? It is recognized that the attributes must be followed, and the source of routing updates is clarified. 100 Next Hop 10.1.13.3 As a result , the BGP table of R5 becomes as follows: Therefore, when the deployment is re-released, this problem needs special attention. As for how to avoid the problem, I will introduce it in the following content. In the routing table of R3 , there is only 1.1.1.0 route. 10.1.13.1 Route 1 : AS_PATH : 500 Ip policy route-map x In addition, if the command is configured when writing: [Experiment 3 ] No main class network; there is a default route, take the default route Origin IGP, metric 0, localpref 100, valid, external, best By default, only when all the alternative route from the same AS different EBGP when neighbors, will be relatively MED ; BGP-Always-Med Compare this command, even if the route can be made from a different AS also MED comparison CCIE.txt format: Switch(config)# mls rate-limit layer2 port-security rate_in_pps [burst_size] Floating Static Routes Neighbor 10.1.23.2 remote-as 200 neighbor 10.1.23.2 route-map test in Hash If you want 11 routes of 100: 11 and no-export two community values are deleted, modified del This community-list to: Bgp bestpath as-path ignore First , use the above command in the BGP process. This command will store the original BGP route sent by the xxxx neighbor in the local memory. When the inbound soft reset is configured ( clear ip bgp soft in ), the router will no longer The neighbor sends an update request, but executes the newly configured inbound policy directly in those BGP routes stored in the memory , thereby preventing the waste of resources caused by triggering large-scale routing updates, but this operation still consumes memory. Therefore, be very careful when using it.

CCNP Routing And Switching Written Dumps

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Exam Code: 300-101、300-115、300-135

Certification Provider: Cisco

Certification Exam Name:CCNP Routing and Switching

Update Date: Mar 28,2024

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