ccnp route 300-101

ccnp route 300-101

Unicast Update Set ip next-hop RouterID : 172.16.13.1 ? Weight Path Set extcommunity cost pre-bestpath 1 10 External The GW configuration is as follows: *>i100.0.2.0/24 / / See which routes are suppressed Elect a root port on each non-root bridge Origin IGP, metric 0, localpref 100, valid, external, best *Mar 1 00:11:47.887: ICMP: redirect rcvd from 192.168.123.1- for 2.2.2.2 use gw 192.168.123.2 Note that there must be three layers between the DHCP server and the trunk interface. Because the unicast packet is relayed, the source address is the trunk interface configured with ip helper-address . Therefore, when the DHCP server returns the packet, the destination IP address of the packet. This is the interface IP of the interface configured with ip helper-address . *>i Sw(config)#vlan 100 Optional non-delivery,ccnp route 300-101, generally used between AS to affect routing. Bridge ID The process of processing a VLAN frame by a trunk port is as follows: RFC1722 The route to the nearest BGP NEXT_HOP route is the route with the smallest IGP metric to the next hop router. After the basic configuration is completed, the BGP table of R4 is as follows: Neighbor RC-ip remote-as 100 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. The route of ( permit ) will be filtered and the other will be released. Aggregate-address summary address suppress-map xxx as-set Ip as-path access-list 1 permit _600$ route-map setCommu permit 10 Enabled by default, if an interface DOWN up, BGP answer immediately suspended. Community Aggregator Designated port: Select a designated port on each segment , which will send the best BPDU on this segment . Metric LocPrf Weight R5 routing, naturally the last is the route from R5 , reflection to R3 is no problem. Add redundant routing 9 Set extcommunity cost pre-bestpath 1 10 OSPF . In this way, for R4 , it goes to 192.168.1.0 , there is a sub-optimal path , that is, around the long way, take R2-R3-R3-R5 MED , choose 3 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. Host 192.168.1.111 255.255.255.0 Complete the basic interface IP configuration . Add the following configuration on R2 : IBGP re-advertises routes to OSPF Activate Port-Security (on the trunk interface) It is deployed on R1 and has an effect on these three routes. FastEthernet0/0 Length, or mask length. When paired with the above ACL , some students will even write LOCAL-PREFERENCE Bgp dampening network redistribute The prefix list contains the serial number, matching from the smallest Whenever a route is reflected by the reflector, the cluster -ID of the reflector (the cluster) is added to the route's Cluster-list attribute. 10.1.25.2 Note that the as-path access-list is also implicitly rejecting all by default. Configuration Example This can indeed avoid the suboptimal path problem, but it leaves a hidden danger: If it is trunk mode, then native vlan and allowed vlan need to be the same. Based on CEF 4 The parameters and capability features are negotiated successfully. You start to send the Keepalive package and wait for the other party's MED setting method : Application example Port RFC1722 After the command is configured, the newly learned MAC address is also sticky . In this way, TC messages are quickly flooded across the network. Instead of using 802.1D , pass the message to root and then root Metric =0 R* 0.0.0.0/0 [120/1] via 192.168.12.1, 00:00:03, Serial0/0 Based on packet load balancing, all packets are rounded on the outgoing link. If you want to use message-based CEF load balancing, you need to configure this command on all outbound interfaces. The buddy experiment has verified that it can indeed be per-packet load balancing. Route-map cisco permit 20 match ip address 2 set metric 10 Network 100.0.2.0 mask 255.255.255.0 neighbor 10.1.25.5 route-map test out At this time, he himself will still forward if he receives the data packet to 3.0.0.0 , but will not forward to other rips. -------------- ARP ACL and relative priority of DHCP snooping database entries Can be configured in global mode or in interface mode, the difference is as follows: global configuration: spanning-tree portfast bpdufilter default No auto-summary After the Port-Security feature of an interface is activated, the default maximum number of secure addresses is 1 , that is, the interface uses its dynamically learned MAC address as a secure address without manually configuring a secure address. This interface is equivalent to being exclusive to the MAC (the device to which it belongs). And the default violation is shutdown Troubleshooting 33 Access-list 1 permit any route-map PBR permit 10 match ip address 1 In B and C on a pair of A do strategy, i.e. AS external boundary of AS do MED , such that A selected lower the MED value. 3.3.3.3 Metric Lab 2 : The access switch is plugged into option82 and the core switch is relayed. Neighbor 2.2.2.2 peer-group IBGP_peers Neighbor 3.3.3.3 update-source Loopback0 RIPV1 operational behavior 32 AS_CONFED_SEQUENCE A list of ordered AS numbers on a path to a particular destination. 2 : Clear text verification; 1,10,20,30 4.4.4.4 Interface configuration: spanning-tree bpdufilter enable 300, ( aggregated by 300 3.3.3.3 ) // a summary route generated from AS300 , a BGP router 3.3.3.3 produced Gateway of last resort is not set 9.0.0.0/24 is subnetted, 2 subnets The length of the AS_PATH is to influence the path selection. It is not recommended in the actual environment. Another CASE that associates the static route of the outgoing interface : // to ignore 1.0 of Obviously this method is too poorly scalable. RC and RA are separated by RB . In this case, EBGP runs through a non- BGP router by using the configurable " multi-hop EBGP" feature . In other words, RB can not support BGP , and the configuration is as follows ( RA ) Match ip address prefix-list 100 Bytes Then first mark the route prefix of 30.30.30.0/24 on R2 , use the community tag, and configure a route-map at the same time. Vlan 10 Features Overview The shorter the AS-Path, the higher the priority. Bgp confederation identifier 345 neighbor 4.4.4.4 remote-as 64512 neighbor 4.4.4.4 update-source Loopback0 Catos port switch ID in the default priority 32 (priority . 6 th 'bit ) , the IOS switch default 128 (priority field . 8 bits) In this way, the entire network is interconnected. Note that when redistributing routes to OSPF , redistribute rip subnets , this subnets Detailed rules Frames with a type field of 8137 represent IPX and SPX transport protocol frames. !! This is the direct link between R1-R3 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, as follows: Note that at this moment, although SW1 trims the traffic of vlan10 on the fa0/20 port , the fa0/20 port of SW3 does still release the traffic, but in any case, the PCs cannot communicate with each other. Demonstrate, know the role of allowed vlan . Of course, this is the way to manually trim. Configure native VTP mode BGP comes in 1 and other routes are 20 , and the metric between OSPF remains unchanged. 8 Some routes can be assigned a specific COMMUNITY attribute, and then BGP attributes can be set based on the COMMUNITY value instead of each route . The COMMUNITY attribute works for neighbors. After setting, it needs to be sent to the neighbor ( SEND ). Configuration command 46 STP (PVST) Neighbor ...... Maximum route entry Received WAS, IT A SENDS that the LAN containing the BPDU DATE The up-to-Port Information Stored for that. the In the this Way, the inferior IS Discarded Information, and Superior Information The IS ON propagated Network. " This strategy, we can also do on R3 , but the implementation direction of the strategy is in . Origin IGP, metric 0, localpref 100, valid, internal Local SW1(config-if)# ip address 10.1.1.253 255.255.255.0 Note that this time you add the extend keyword in the send-community Note 21 Set comm-list del delete route-map test permit 20 Experimental verification ( EBGP equivalent load balancing) R2#sh ip route The oldest EBGP neighbor means that it is probably the most stable BGP neighbor, so it is preferred here. Of course, this rule has poor controllability and is generally not used as a routing policy. The following happens and will skip this rule: IGRP for OSI networks Metric for redistributed routes Mobile routes * i BGP routing table entry for 11.11.11.0/24, version 5 version number Ip as-path access-list 1 permit _600$ route-map setCommu permit 10 2 : Reponse message, send all or part of its routing information, a Response Router bgp 200 Let's take a look at this route 100.0.1.0 : Configuration example 46 Faster Aging of Information Switch(config-if)# switchport mode trunk Switch(config)# interface vlan 255 Ip dhcp pool BIND Ip detects whether the IP address in the ARP body is invalid or unexpected, such as 0.0.0.0 , 255.255.255.255 , and multicast IP address, which are considered invalid IP . SenderIP verifies whether the message is an ARP request or response . And targetIP only if the message is the ARP response will be verified when Show run | in route A macro command that specifies the interface mode as access and enables the portfast feature. (Don't be surprised, the author's record is an afternoon, personally complete the debugging task of nearly 100 switches, of course, there are integrator brothers to help put equipment, add points, labeling). After the switches are debugged, they will be installed in the various computer rooms or weak rooms of the customer site. After all the switches are properly put into operation, they will be put into operation.