ccnp route foundation learning guide

ccnp route foundation learning guide

*Mar 1 00:11:47.999: ICMP: echo reply rcvd, src 2.2.2.2, dst 192.168.123.3 V2 defaults to send v2 to receive v2 Let's take a look at R4. Before the DAI is deployed , if the ARP spoofing behavior occurs on the intranet , for example, the PC sends an invalid ARP packet, the switch cannot detect and defend the defensive action. Configure an interface as a passive interface: In summary, for IBGP to work properly, you must implement one of the following configuration options: Metric The other values ​​of DSAP and SSAP are pure IEEE802.3 frames. When BGP routes are redistributed to the IGP , the iBGP routes are not redistributed by default . Only EBGP routes are re-advertised . bgp redistribute-internal is required to make the iBGP routes re-released. The concept of traditional IP routing Let us review: When the router receives an IP packet, check the IP header of the packet, and take the destination IP of the packet to the routing table for comparison according to the longest matching principle. Finally, Forward the packet. Therefore, traditional IP routing can only be routed based on the purpose of the data. EGP e was re-released from an early agreement such as EGP This entry will be entered into the routing table as a direct network (see below) Two-point bidirectional routing re-release implementation 98 Switch(config)# vlan 20 The Response packet contains a maximum of 25 routing entries. Based on the above experiment, R1 passes the 11.11.11.0/24 route to R2 , carrying the community value of 100:11 . This value can be matched on R2 using ip community-list , which can be further used in route-map . This community-list goes to set the policy. We now R2 on a community-list to match the 100: 11 , a notification to add no-export the community to the route. Match ip address 1 set metric 10 For the contents of this section, please refer to the relevant chapters of the path properties of this document. Option 82 sub-option 2 : Remote ID , which is generally the MAC of the access layer switch that inserts the option 82 information . Then observe the BGP table on R4 : The Conditional inject is configured as follows (in BGP routing process mode): A distribution list is a tool used to control routing updates. It only filters routing information and cannot filter LSAs . Therefore: the distribution list is used in the distance vector routing protocol,ccnp route foundation learning guide, and the route can be filtered normally in either in or out direction. But the work in the link state routing protocol is a bit problematic. Neighbor 4.4.4.4 route-map LP out Sent from the root bridge BPDU number of seconds after (this BPDU survived for how long), each through a bridge are minus 1 , so it is essentially the number of hops to reach the root bridge. R4#sh ip b Trunking (64513) 200 i Note that this address is the address used by the neighbor to establish a BGP neighbor relationship. Related commands : This summary route generated locally is 172.16.0.0/16 , NH=0.0.0.0 , weight= default value 32768 , origin=i . The detail route is marked as " s " and is therefore suppressed. IP policy routing is disabled Local Switchport mode private-vlan host For example, to fetch the 192.168.1.0/24 route, access-list 100 permit ip 192.168.1.0 0.0.0.0 255.255.255.0 Same interface mode ( access , trunk ) 2 Bibliography 110 All VLANs except the following no VLANs Router bgp 64512 The physical interfaces belonging to a port-channel must have the same configuration as below. Core switch configuration: Experimental verification ( IBGP equivalent load balancing) Rate limit of ARP packets After deploying DAI , we can define the trust status of the switch interface: trusted , or untrusted , for trusted ports, it will not be received. 100 ? Timer verification ! 10.1.13.1 If DHCP snooping is turned off or this is a DHCP- free network environment, such as a pure static IP address environment, use ARP Situation 2 159 220 , 91 70 Here we are talking about is the switcher, as we all know, is not recognized by the switcher Layer 3 packet, which they will not see a three-tier I head, but this does not affect a switcher own IP address. On the router, we configure the IP address of the physical interface of the router , and the second layer Define a DHCP address pool. One network segment corresponds to one address pool. Match ip address prefix-list 100 set extcommunity cost 1 10 For dynamic address allocation The cost of the route. The optional parameter length is used to indicate the length of the optional parameter field The next hop of 1.1.1.0/24 , because the AD value of OSPF is better than RIP . ACLs to release or discard ARP packets. Dialer Dialer interface Not used (set to all 0s ) 13 Lab 2 : The access switch is plugged into option82 and the core switch is relayed. Debug dhcp detail Native vlan Received a Layer 2 frame. MTU problem When the number of prefixes received from the neighbor exceeds the maximum number 300 of 90% (default 75% ), generating a message log [^act]$ 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. ( If MED is empty , it is set to 0) Send TCP packet 2> Dynamic inbound soft reset Knowledge review In SW3 created on 10 , 20 , 30 three VLAN Mechanism overview As a result, on R4 , the BGP table is as follows: Commands 10.1.23.2 Activate the portfast feature for a specific interface The federated AS number in AS_PATH is used to avoid loops within the federation The destination IP address of the route , which can be the address of the natural network segment or the subnet address or Switching is the process of mapping layer 2 to layer 3 addresses andforwarding to a destination interface. Access switch configuration: Ip community-list standard del permit no-export route-map test permit 10 Offset-list { access–list-number | name } {in|out} offset [ interface-type interface-number ] Note that at this time, the routing table is used to recursively find the route to 10.1.12.2 , so there must be reachable routes in the routing table. R3 , R4 , and R5 use OSPF to ensure inter- AS routing interworking, and use loopback to establish BGP neighbors. R2 configuration is as follows Switching is the process of mapping layer 2 to layer 3 addresses andforwarding to a destination interface. Via 10.1.13.3, FastEthernet1/0, 0 dependencies OpenSent 8 bits (interface) ip load-sharing per-destination RIPng Inside the AS , the AS-PATH does not change, and the AS_PATH anti-ring cannot be used , so loops are easy to occur. Network topology and interconnection IP address planning as shown R2#sh ip bgp R3 and R4 establish IBGP neighbor relationship, and R3 on the OSPF routes redistributed into BGP The switches at both ends of the trunk need to use the same trunk protocol. Regular expression Show ip bgp 10.1.34.3 from 10.1.34.3 (3.3.3.3) When a local BGP route is advertised to an IBGP peer , the MED value must be carried . 1 Knowledge review Last update from 192.168.101.10 on Serial0/0, 00:12:46 ago Routing Descriptor Blocks: Policy-list is only supported in BGP . Other IP routing protocols do not support this feature. Ip helper-address command can configure the first to receive client broadcasts emanating discovery on the interface that three packets, after the broadcast DHCP messages will be relayed to unicast packets, is to take the IP routing It is. Forward RR self-originated route UDP Show ip dhcp binding Show dhcp binding on DHCP server Ip route 172.16.1.0 255.255.255.224 192.168.12.1 Off: EtherChannel not configured on interface *> 172.16.0.0 Define set action Note that the data exchange process is different for different products. The above process is the result of testing on the CISCO device (server). R1(config-router)# network 12.12.12.0 mask 255.255.255.0 R1(config-router)# distribute-list prefix 11 out Metric Match ip address 1 Configuration example advertise-map and summary-only when combined, Aggregate-address lower address all the details are summarized suppressed while advertise-map entries that match all the details if hung up, the summary route disappeared, (so long as advertise-map matching There is one in the detail, the summary is in); and the summary route inherits only the BGP path attribute of the advertise-map matching detail route.