ccnp switch v7 chapter 9

ccnp switch v7 chapter 9

Due to the existence of the principle of horizontal splitting,ccnp switch v7 chapter 9, BGP requires that the IBGP be fully interconnected within the AS (here, the neighbor command specifies). (The root cause is in Interface vlan 10 Use 224.0.0.9 Vlan 10 Arp replies sent: 3 Forwarder 2 Incomplete Use network or redistribute manner IGP introducing route BGP when , MED will inherit IGP route Metric ( direct routes and static routes Metric is 0) Since the AS_PATH attribute does not change within the AS (only when the route leaves the AS ), the AS inner loop has a horizontal splitting mechanism, and the route reflector actually relaxes the horizontal splitting principle. This will bring some hidden dangers to the loop. Therefore, the route reflector needs to use the following two attributes to prevent loops: None does not send updates ( passive ) Migrate to the Established state if you receive a keepalive message from the other party Ip dhcp snooping vlan 10 Ip flow-export forwards the NETFLOW audited packet to the specified device . The configuration of R4 is as follows: Activates self-recovery of the err-disable interface due to arp-inspection violations . 10.1.13.1 Data ( DATA ) Active is 10.1.1.252 (primary), weighting 100 (expires in 7.028 sec) Arp replies sent: 1 Bgp confederation peers 64513 When a bridge starts to active, each port sends a BPDU every 2s , and when a port receives a better BPDU than the one sent now , the local port will stop sending if it is within a certain period of time ( But after saving for 20s ), he no longer receives better from neighbors. Port-Security Set metric 100 Length : indicates the full length of the BGP packet, including the header. If the router accepts the parameters of the neighbor in the OPEN message, it will answer a keeplive message, and send the message for the period of 1/3 of the holdtime (but not less than 1S ). CISCO defaults to 60S . If the hold time is 0 after negotiation , the keepalive keep-alive message is not sent . Recognized as a self-determination attribute. LP is a local priority, only AS inside, in IBGP between peer transfer, and will not be passed to other EBGP neighbors 4.3.3 Certification 36 2 BGP , but the BGP routes ( BGP packets) between the BEs can be forwarded through the CD . For the CD , these BGP messages are regarded as normal IP packets and are directly forwarded and not viewed. Knowledge review : ccnp 100 3.3.3.3 BGP stipulates that routes learned through one IBGP are not propagated to all other IBGP neighbors. This is the horizontal split rule of BGP . 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. Metric Neighbor 10.1.12.2 prefix-list 11 out Authentication Type *version* 2 Community Aggregator Next Hop CASE3 : Metric Therefore, you need to use the MAC address reduction scheme. Unicast update 0 00:11:53 First ensure that R1 , R3 to 10.1.1.0 are routed, and test on R2 : What is the routing table for R3 ? In fact, without any impact, R3 can learn the routing of the entire network. As for why, I believe that it has been explained very clearly. Verify the value of experiment 1 ORIGINATOR_ID Note that the main TC while timer is timed on the port, and the BPDU sent by the port will be set by the TC bit , and the BPDU will also be sent out from the root port. Ip prefix-list 1 permit 11.11.11.0/24 route-map test deny 10 100 Weight The data is two-way. When considering traffic, pay attention to the round trip of traffic. OSPF TAG Overview Let's look at the following example: 10.10.10.0/24 Pointer to the target: The pointer does not point to the router's direct connection to the destination network or to another router address in the directly connected network , or to the local interface of the link. A router that is closer to the target network is called a next hop router. Debug ip dhcp server {events | packets | linkage} Enables debugging on the DHCP server In this step, we run the BGP protocol on the above basis to complete the establishment of basic BGP neighbor relationships: Supported for switch ports and routed ports Y Configuration BGP federal 25 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.