ccnp route pdf 642-902

ccnp route pdf 642-902

7 The so-called seed metric refers to when I use a route to re-publish from an external routing protocol to this routing protocol, if the metric of the route is not manually specified , the default metric is used . Look at the following table (the following table is a recognized default value that can be modified using the default-metric in the routing process ): 100 i Use the err-disable command to modify the duration of the err-diasable state. The default is 300S. This command can be used in the following ways: Other applications of regular expressions in CISCO IOS Network ! In ASBR when re-released many ways to modify the external LSA of TAG value. Failure case analysis Network 192.168.24.2 0.0.0.0 area 0 Match ip address prefix-list 2 router bgp 100 5.5.5.5 3.1 Overview 20 / / Mark the routing table 192.168.1.0 as the default network Must be zero RIPv1 update and receiving rule verification Router ospf 1 Repeat, you can configure multiple Sw1(config-if-range)#channel-protocol pagp/lacp Sw1(config-if-range)#channel-group 1 mode desirable When port-security mac-address sticky is activated on the interface , then: 1 When the number of prefixes received from the neighbor exceeds the maximum number 300 of 90% (default 75% ), generating a message log As the next hop to 100.0.1.0 and 2.0 . In the R4 on Network 100.0.1.0 mask 255.255.255.0 About sticky secure address Mtu 1500 , so it will be fragmented, then on R2 , the two fragments are reorganized. It is usually a direct connection because it will look for direct routes. EBGP default TTL is 1 A macro command that specifies the interface mode as access and enables the portfast feature. Configuration example 13 Blocking to forwarding state usually takes 30-50s (default 50S , ie 20+15+15 ), this time can also be adjusted by configuring the spanning tree timer. Here to add a sentence, since attention to traffic, we must pay attention to the round trip of traffic, in general, we want 1.1.1.0 access 3.3.3.0 traffic to go ADC , then round-trip traffic generally requires a consistent path. That 3.3.3.0 to 1.1.1.0 data to a CDA , so to further D on the update to the C of 1.1.1.0 route of metric plus 1 jump. Connectionless data transfer service with acknowledgment. We mainly analyze: No confirmation mechanism, anyone can initiate an arp request or response Show ip bgp route prefix Switch(config-if)# switchport mode trunk Switch(config)# interface vlan 255 Locally find a route to the neighbor and try TCP three-way handshake. Waiting for completion, the authentication is completed during TCP setup. If the TCP connection is not up, enter the Active state and try to connect repeatedly. 5 300 Sw(config-if)#switchport mode private-vlan host The Control field is composed. Prefix-list 70 !! ISP1 , ISP2 and GW all need to open CDP Note change, replace-as keywords allow R2 to secAS of EBGP when sending routing neighbors, with local-as201 replace real AS200 so replace-as the role of keywords is: Replace with local AS AS Real in the Updates at The EBGP , translate: when the router secondaryAS the EBGP send updated neighbor, with secondaryAS alternative number Pri aS number. LocPrf ? Native vlan Internal 0 packets, 0 bytes Match interface s 0/0 Maximum frame: 1518+4=1522 Configuration example 46 State is Listen RSTP Router(config)# ip prefix-list {list-name [ seq number] { deny | permit } network/length [ ge ge-value ] [ le Detailed rules Port-channel Ethernet Channel of interfaces Redistribute connected route-map test Metric Ip community-list example 1 : Origin IGP, metric 0, localpref 100, valid, internal aggregate-address 192.168.0.0 255.255.0.0 as-set after, R1 can only learn to 2.0 , the summary route are rejected, the reason is 1.0 carries no-adver of Community Community , when the summary route plus the as-set keyword after Will inherit its community , so the summary route also carries no-adver , this time 0 100 0 200 i 2 100 i IBGP neighbor relationship We can R4 use the bgp always-compare-med command to force R4 compare routes MED Toxicity reversal 4. Proposal/Agreement Sequence 13 ICMP redirect 8 The configuration of R3 is as follows: Configuration example 46 / / View command: Show etherchannel 1 summary 100 Then R2 introduced locally 1.1.1.0 of BGP routes, and inherits from OSPF learned 1.1.1.0 of Metric 2 , then R3 on 200 Therefore, from here we can see that the route summary is a risk of looping. One way to solve the above problem is to add a static route on the Layer 3 switch: ip route 192.168.0.0 255.255.0.0 null 0 , this way, when it receives access Configuring a VTP domain name Ip route 172.16.0.0 255.255.0.0 192.168.23.3 Next Hop Host address. Affect routing decisions by modifying weight 10 Path MED attributes for routes published to the federation are retained throughout the federation Optional attribute Router ospf 1 Next Hop The result found can be understood as a pointer to find the associated outbound interface: Whenever a reflector receives a route whose Cluster-list attribute already contains the ClusterID of the cluster , the route will not be reflected based on the purpose of the anti-ring. Therefore, AVG is responsible for distributing virtual MACs , and AVF is responsible for forwarding data. BGP routing table entry for 100.100.100.0/24, version 2 Paths: (2 available,ccnp route pdf 642-902, best #2, table Default-IP-Routing-Table) Flag: 0x820 Note that this time you add the extend keyword in the send-community Dhcp-snooping 100 The basic interaction process is as follows (the process described below is independent of the above diagram): ? 8.3.4 Questions 104 Neighbor 10.1.23.3 local-as 201 no-prepend replace-as dual-as Which exchange method will be used Each update message describes only a single BGP route. This is because the BGP path attribute can only describe a single route. Finally , select a designated port DP on each segment , sw1 is the root bridge, all interfaces are DP , and finally compare the two interfaces of the direct link between SW2 and SW3 . SW2 receives from the interface SW3 sent BPDU , SW3 also receive SW2 sent BPDU each compare your received BPDU in the bridge ID (also called the comparison transmission bridge ID ), the final SW2 since the MAC address Smaller wins.