ccnp tshoot boson

ccnp tshoot boson

Path You can not route the network , but the origin of the route, configure a summary static, and then network the summary route, this method is not recommended. 8 Ip rip trigger 31 R3 associates the route-map with the redistribution of the direct route 3.3.3.3/32 , tag#11 , and the route is passed to R2 . On R2 , the redistribution of RIP to OSPF is deployed. After the external route of 3.3.3.3 is injected into OSPF , the tag value is carried by default. R3 , R4 , and R5 use OSPF to ensure inter- AS routing interworking, and use loopback to establish BGP neighbors. Note that the above is the default metric when re-publishing from other dynamic routing protocols into this routing protocol . If you republish a local direct connection or a static route, the situation changes,ccnp tshoot boson, as follows: So how do you perform an accurate calculation of the summary route ? Let's look at an example: When both DSAP and SSAP take a specific value of 0xff , the 802.3 frame becomes a Netware-ETHERNET frame to carry NetWare. Routing. So go to both network segments and go to R1 . So if we want to go to 11.11.11.0 and take R3 , so that these two destinations can be diverted? We can choose to route the source from 10.1.12.1 in the EIGRP process of R2 . Network 3.3.3.3 0.0.0.0 area 0 Route-map test deny 10 match tag 1111 MacAddress The weight of the BGP route generated by the local summary is also 32768. Match ip address 1 After receiving the data frame, the MAC sublayer of B submits to the LLC sublayer, and the LLC sublayer determines, according to the DSAP field, the connection to which the data frame belongs. Layer 3 interface: routing interface ( no swithport or called routed port ), SVI interface Feature Overview 50 Show run | in route The above match statement is used to match the summary route. basic concept Lowest sender port ID On a specific interface, if no BPDUs are received for three consecutive cycles (or max-age timeout), the STP data on the interface will age rapidly. As a result, the BPDUs are somewhat similar to the keep-alive mechanism between switches . This fast aging mechanism helps to respond quickly to topology changes. Use as-path access-list to match routes Discard (that is , the combination of disabling, blocking, and listening in 802.1D ) Implementation points Match community 30 Clear ip bgp soft in // Inbound soft reset, locally send route-refresh to all BGP neighbors When the router is adjacent to the host, they learn in some way. ARP response packets can be sent directly without a request, which leaves a huge loophole for the attacker. Routing entry for 192.168.1.0/24 SW1#show int trunk 802.1D situation: Network Layer Reachable Information ( NLRI ) One or more (length, prefix) binary groups used to advertise IP address prefixes and prefix lengths Experiment 1 : Basic experiment 100 Weight Ip prefix-list huizong permit 172.16.0.0/16 ip prefix-list mingxi permit 172.16.1.0/24 ip prefix-list xiayitiao permit 10.1.24.4/32 route-map RP_mingxi permit 10 Sh ip bgp neighbors {address} received-routes Then just republish this static summary route into OSPF . In this way , the routers in OSPF can reach through this summary route. Matches the network number and prefix length in the route prefix to enhance the accuracy of the match. This is the typical recursive route of BGP . The next hop of the 3.3.3.0 route on R1 is 2.2.2.2 , further recursive 2.2.2.2 , and the associated outbound interface S0/0. In R2 opened on loopback interfaces 2.2.2.0/24 , R2 both redistributed RIP into OSPF , they redistribute directly connected into OSPF KEEPALIVE defaults to 60s . Keepalive timers do not interact in Open messages. How do you set the timer between two BGP neighbors? If the currently configured keepalive timer is less than min ( holdtime ) /3 , the configuration value is taken. Switch(config-if)# ip address 192.168.255.1 255.255.255.0 Access-list 1 permit 10.1.1.0 Supported for switch ports and routed ports The parameters and capability features are negotiated successfully. You start to send the Keepalive package and wait for the other party's * i Experiment 1 Match tag 10 Establish BGP neighbor relations 5.5.5.5 UDLD Definition of 1042 . The most commonly used encapsulation format today is the format defined by RFC894 , commonly referred to as Ethernet II or Ethernet DIX . Bgp confederation identifier 345 This command is used to tell the AS outside the federation . My local AS number is 345. Redistributing Routing Protocols 40 802.1q (global configuration command) activates portfast features on all non- trunk interfaces 4 Interface: Interface for forwarding packets. Match abcd , abccd , abcccd, etc. Maximum MAC Addresses : 1 !! The maximum number of secure addresses, the default is 1 The configuration of R5 is as follows: *>i100.0.2.0/24 The default COST value of all ports on the switch will increase by 3000 , so that the port of the switch is not elected as the designated port. Bind a mac address to an interface The same community VLAN can communicate with each other, but the community VLAN must be set up by SVI or router interface to communicate. By default , Cisco routers enable fast switching or optimal switching or cef switching instead of process Ip route 0.0.0.0 0.0.0.0 null0 router bgp x Connectionless packet transfer service switchport trunk encapsulation dot1q switchport mode trunk After this time has elapsed, the route entry will become 16 hops, marking the unreachable route possibly down . Gateway of last resort is not set Case: Implementing intranet export data diversion through PBR 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, 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 . Redistribute ospf 1 metric 3 Select interface mode according to specific protocol Note that this address is the address used by the neighbor to establish a BGP neighbor relationship. Consider a simple model: R1 and R3 , R2, and R5 establish an EBGP neighbor relationship. R3 , R4 running the OSPF , the R3 on each can learn from the R1 and R2 of looback SW1#sh int trunk PBR (Policy Routing) The destination IP address of the route , which can be the address of the natural network segment or the subnet address or External route tag RIP Access-list 2 permit 172.16.20.0 route-map BGP2OSPF permit 10 When a router receives an update from the neighbor router indicating that the previously reachable network is now unreachable, or has a route with a larger hop count, the router marks the route as unreachable and starts a suppression timer if If the router receives a newer update of the route before the timer expires, or has a better metric than the previous record, the router identifies that the route is reachable and deletes the timer.