ccnp switch in one month

ccnp switch in one month

RFC1403 BGP OSPF Interaction If an external route carrying a tag is advertised on R1 and OSPF is redeployed to EIGRP on R2 , then the route is advertised. If the currently configured keepalive timer is greater than min ( holdtime ) /3 , then int[min ( holdtime ) /3] The configuration of R3 is as follows: The configuration of R4 is as follows: Under normal circumstances, the data is preferred to go ip next-hop , that is, go ISP2 RouterA passes the route 100.100.100.0/24 to C , and the NEXT_HOP remains unchanged. If the interface is configured as a hybrid interface *>i100.0.2.0/24 Set ip next-hop 10.1.1.2 10.2.2.2 interface fast 1/0 Router bgp 12 table-map PA B 3.3.3.0 [200/0] via 2.2.2.2, 00:03:01 We expect the effect of the above configuration is implemented R1 to 100.0.1.0 routing setting MED = 100 , 2.0 disposed MED = 200 is , while R2 to 100.0.2.0 disposed MED = 100 , 1.0 arranged MED to 100 , respectively,ccnp switch in one month, to the respective property The EBGP neighbor takes effect, so the MED attribute will be passed along the route in AS345 and finally arrive at R4 . Exactly the same, except that the list of AS numbers belong to the local Federation AS Ip default-network 108 Known via "ospf 1", distance 110, metric 1 ? Configuration command 57 BGP supports MD5 authentication. To enable MD5 authentication on the TCP connection between BGP peers , use the following command: 6 Experiment 1 Neighbor 1.1.23.2 send-community Match ip address 1 Match ip address prefix-list 1 set metric 200 Used in route-map , when some of the matching entry, and using the set command, the route-map used in a neighbor (e.g., out time direction), then to update the route to a neighbor, the BGP of MED properties will Inherit the metric value of these routes in the local IGP Redistribute ospf 1 route-map test Solution: Use distribution lists to avoid the sub-optimal routing problem Lowest sender port ID The experiment was tested in the IOS C3640-IK9O3S-M Version 12.4(25) environment. So as long as the 1.1.1.0 network is not DOWN , R1 will always send default routes to R2 . ? 9.9.23.0 is directly connected, FastEthernet0/0 Standby is 10.1.1.252, priority 100 (expires in 7.572 sec) S 16 bits Ip dhcp snooping verify mac-address The following are five types of BGP packets and packet parsing: 5.5.5.5 Configuration example 46 The configuration of SW2 is as follows: Remarks Route matching tool 70 Desirable: capita ask if the other side can/will Path After Port-Security is enabled, related parameters have default configuration. 8 8 8 8 Passive-interface configuration 51 If the number exceeds xx , disconnect the BGP connection with the neighbor and reconnect after 2 minutes. The maximum number of secure MAC addresses allowed by default is 1 After the maximum number of allowed MAC addresses of the port-security interface is set , the security address entries associated with the interface can be obtained as follows: ...... 192.168.8.0/24 In PVST+ , a VLAN has a spanning tree. On each switch, a unique identifier is required for each spanning tree, that is, the network. ? Bgp dampening network redistribute Or trunk * i HSRP R1(config-router)# network 11.11.11.0 mask 255.255.255.0 The default keyword has a lower priority than the detail route. To maintain a consistent BGP topology, the RR does not modify certain BGP path attributes when it reflects routes . These attributes include NH . Match ip address 1 AS Hops 1 Origin IGP, metric 0, localpref 100, valid, external, best Ip prefix-list 100 permit 100.100.100.0/24 route-map COST1 permit 10 UDP Frame format Completed in the logical interface 300 {100,200}, (aggregated by 300 3.3.3.3) PAgP mode: Note that the neighbor 1.1.1.1 filter-list x weight yyy command can be used multiple times for a neighbor, that is, set different weights for different routes . But the neighbor 1.1.1.1 filter-list 1 command, in the same neighbor in or out direction, can only be used once, these two commands are very different Transmit limit accumulator 0x0 (0x0) IP MTU 1500 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. ---------- 200 You can learn these two external routes. BGP 4.4.4.4 BGP Deaggregation Topology change process example Configure on R2 as follows: Experimental verification It is usually a direct connection because it will look for direct routes. EBGP default TTL is 1 100 Origin IGP, metric 0, localpref 100, valid, external, atomic-aggregate , best Configuration example 46 Route-map nat1 permit 10 match ip address 1 match interface serial0/0 Bgp connected eigrp Forward In fact, the establishment of a BGP neighbor relationship requires only one connection. The configuration shown in the following figure can also establish a BGP connection: When will BGP automatically summarize? (interface) ip load-sharing per-packet 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. In the routing table of R3 , there is only 1.1.1.0 route. Violation Mode : Shutdown !! After the violation, the default is shutdown Aging Time : 0 mins The configuration of R3 is as follows: SW3 's Fa0/3 from Listening to Forwarding takes 20+30S Ip address 192.168.10.254 255.255.255.0 Method three: default-information originate [123].[7-9] O Exit : Disabled *> 11.11.11.0/24 Layer 2 switching 100 Metric Match ip address 2 200 i Knowledge review Optional attribute The IEEE802.3 frame can be divided into the following categories according to the values ​​of the DSAP and SSAP fields: 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. Experimental phenomena: ? Origin IGP, metric 0, localpref 100, valid, internal Local Local network and re-routed routes, LP defaults to 100 , and can be transmitted to other IBGP neighbors within the AS . The LP is unchanged unless the policy is deployed during transmission. The Client does not know its own Client , so the RR itself can also become a client of others. Exactly the same, except that the list of AS numbers belong to the local Federation AS A tool used to control routing updates can only filter routing information and cannot filter LSAs . Match 100 Display BGP tables, for example: The next outgoing interface of the route is the port of the match . Switch(config-if)# switchport port-security Ip route 0.0.0.0 0.0.0.0 192.168.23.3 Origin IGP, metric 0, localpref 100, valid, external, atomic-aggregate , best Rapid Transition to Forwarding State The election of the Root Bridge will not be said. RIP Version 2 MIB Extension IBGP re-advertises routes to OSPF Local updater ID is 0.0.0.0 (no valid interface found) TCN BPDU Then the routing table of R2 is as follows: Local Match ad , abcd , aaabcd, etc. ! The TCP connection was not successfully established and the TCP connection was tried repeatedly . In R3 and R5 between increasing an IBGP connection, thus R3 and R5 of BGP routes do not need to pass by R4 (albeit over a packet still R4 forwarding, but R4 terms, R3 passed to R5 of these packets, Just an ordinary IP message). It should be noted here that BGP is different from IGP . IGP is like OSPF . To establish a neighbor relationship, two routers need to be directly connected. BGP does not need to be directly connected because it is a connection established based on TCP .