ccnp switch ine

ccnp switch ine

You can further configure this logical etherchannel interface. 192.168.255.0/24 . Router bgp 12 table-map PA 100 4.4.4.4 Ip arp inspection vlan 100 logging acl-match none ... At another point, R2 will take 10.0.0.0 , 11.0.0.0 (the network segment where the secondary address is located), and 1.0.0.0 and 3.3.3.0 from their own loopback. r route is not loaded into the RIB table, for example due to AD values, etc. Neighbor 4.4.4.4 remote-as 345 If an external route carrying a tag is advertised on R1 and OSPF is redeployed to EIGRP on R2 , then the route is advertised. Configure this command. When routing, the router only compares all routing entries with the AS_CONFED_SEQ attribute. This command is used for federated routers, while weight and LP have higher priority than MED. None | permit }} Switch(config-if)# switchport trunk native vlan ? Origin IGP, metric 0, localpref 100, valid, external, multipath, best Solution: Avoid the problem of sub-optimal routing by re-publishing static summary routes. 10.1.12.2 * i100.0.1.0/24 Static Routing Configuration *> 1.1.1.1/32 10.1.23.2 65 0 12 i ? UDLD mode of operation After a few seconds, D receive this the BPDU , Block out port P1 Consider the case where R2 is RR , and R4 and R5 respectively declare loop Configuration example ? Then just republish this static summary route into OSPF . In this way , the routers in OSPF can reach through this summary route. 802.1W BPDU format 32 bits / / This is used to delete the no-export attribute, is a list of commands Router bgp 300 *>i 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 . Redis ospf 1 route-map test SW3 receives this BPDU , but finds that this BPDU is less preferred than its own locally stored BPDU , so the BPDU is ignored. Different prefixes (network number + mask, indispensable), belonging to different routes in the routing table Trunking DMZ-Link Bw can only configure single-hop EBGP neighbors on this router. Ip route 172.17.0.0 255.255.255.0 192.168.12.1 None The process of processing a VLAN frame by a trunk port is as follows: 100 Neighbor maximum-prefix 300 90% warning-only Migrate to the Established state if you receive a keepalive message from the other party ? Incomplete Router ospf 1 Here are a few concepts to make clear: Sequence of next hops. The acceptable range is from 1 to 65535. 0 ? MD5 digest : 0x49 0x3C 0x1F 0x79 0x15 0x00 0xC7 0xAE 0x0E 0xDC 0xDD 0xEF 0x93 0xA5 0xB6 0x26 Index Neighbor 3.3.3.3 update-source Loopback0 Encapsulation Status Match as-path 1 If ip next-hop and ip next-hop recursive are used in the same sequence of a route-map list , then ip next-hop is valid. If ip next-hop is hanged, ip next-hop recursive is enabled . If ip next-hop recursive and ip next-hop are both hanged, they are thrown to the routing table for processing . Note: A route-map sequence (such as route-map test permit 10 ) allows only one configuration. When the packet enters the router, the router strips the Layer 2 information and then looks up the destination IP address in the CEF table for forwarding. The result of the forwarding decision will point to a neighboring entry in the adjacency list, in which the second layer of character letters that need to be rewritten can be found. Match ip address prefix-list 1 2 Route 1 : AS_PATH : 500 Route-map PBR permit 10 match ip address 1 Spanning-tree features OK , now go back to the main class network number 172.16.0.0/16 , then we will go out and look at the picture. 172.0.0.0/8 actually shifts the mask of this class B address to the left by 8 bits , so that the network number obtained is actually a large network number including 172.16.0.0/16 . Call it supernet . BGP table on R6 : R2 Neighbor 1.1.23.2 send-community When no BPDU is received for a period of time and the lifetime reaches MAX age , the bridge considers that the port is connected. Vlan 100 BPDU sending bridge ID Adjacency table End deny any Another problem with proxy ARP (from TCP/IP routing technology volume one) switchport trunk encapsulation dot1q switchport mode trunk Access-list 1 permit 1.1.1.0 Port Mode Encapsulation Status Native vlan Fa0/20 on 802.1q trunking 1 Authentication is identified by setting the address family ID field to all 1s ( 0xFFFF ). [123].[7-9] Configuration Revision 17 Penalize mode shutdown (enter err-disable state) while sending an SNMP trap Other solutions, we will continue to introduce in the following experiments Troubleshooting 39 When deploying the campus network, we often have the following special requirements for switches: *>i100.0.2.0/24 ... 100.100.100.0 [20/0] via 10.1.23.3, 00:02:57 The configuration of R5 is as follows: Ip policy route-map PBR From the message we can see that the size of this IP packet is 1500 bytes. Experiment 4 Secret level The same prefix is ​​obtained through different protocols, first than AD , and later than metric Network BGP only passes the route that it uses, that is, the route that it considers to be Best to the BGP peer. Set the interface to nonegotiate and do not send DTP frames. If the configuration is non-negotiated, you must manually configure the interface mode as access. If the route learns to an EBGP neighbor, it is reflected to all client and non- client IBGP neighbors. / / This is used to match 11 routes Then IOS will automatically change the command to Set ip next-hop ip1 ip2 ...... Interface FastEthernet0/1 switchport access vlan 10 Passive-interface configuration 51 Route-map xx permit 10 After deploying loopguard : Experimental needs Incomplete ? Learned from other sources (confirm that the source of the route is incomplete), the re-routed origin is the tag 3.3.3.3 Also pay attention to the sending conditions of ICMP redirects here . At the same time, note that this default route on R3 , if configured to associate with the outbound interface, can not observe the phenomenon of redirection, as for the reason, you know, proxy ARP . neighbor to mean), BGP The network command,ccnp switch ine, only the local routing loaded into BGP one way process. R3 's loopback interface IP has been declared into OSPF , and R4 learns loopback routing through OSPF . Therefore, the BGP table for R4 is as follows: The above command, the switch will accept the carry option82 information while giaddr is 0 the dhcp message, and then do the relay. In this way, the address can be successfully obtained. Since the flash space is very limited, it is recommended to store the file on the TFTP server. When deploying on a TFTP server, be careful to first create an empty file to correspond to the URL in the configuration command . This file is used for dhcp snooping bingding database writes (depending on the device). ( Well-known mandatory ) basic configuration R1(config)# access-list 1 deny 192.168.3.0 R1(config)# access-list 1 permit any R1(config)# router ospf 1 ip route 172.16.1.0 255.255.255.0 192.168.12.1 !! go subnet route Interface FastEthernet0/1 switchport access vlan 10 You can enable this feature by using the spanning-tree loopguard default global configuration command. Configure the interface: Show ip dhcp database Displays recent activity on the DHCP database Neighbor 4.4.4.4 update-source loopback 0 // Specify the update source as loopback0 0 100 0 Match ip address pref 1 set local-preference 200 ( 20s time), start to enter the listening state Obviously this method is too poorly scalable. There are two types of Layer 3 interfaces, one is SVI above we have already discussed, the other is routed port , or no switchport . Note that the SVI port is a virtual interface and the routed port is a physical interface. The Layer 3 switch supports the physical interface as a Layer 3 interface similar to the physical interface of the router. The specific configuration is to enter the configuration mode of a specific interface. After the no switchport command is used, the interface becomes an L3 routing interface. You can Configuring IP for him is like operating an Ethernet port on a router to operate it.