0/0/0
Ip router isis
Ip address 1.1.1.1 255.255.255.255
The configuration of R5 is as follows:
The two new TLVs are:
Mpls traffic-eng tunnels mpls label range 200 299
For the device number, this IP is also the LDP routerID .
The configuration of R1 is as follows:
O
The unit is Bytes , multiplied by 8 is 100Mbps
PseudoNode ( PSN )
*Aug 18 04:37:06.239: version=0, length in words=7
Router-id 3.3.3.3
5.5.5.5 [110/2] via 0.0.0.0, 00:00:01, Tunnel0
Ll Router , maintains first a layer LSBD , by default, L2 of the LSP is not flooded over, and therefore L1 router 's LSDB
Level2 area default route
4.4.4.4/32
*Aug 18 04:37:24.735: %LINEPROTO-5-UPDOWN: Line protocol on Interface Tunnel0, changed state to down
Record Route: NONE
LABEL
InLabel : -
Tunnel mpls traffic-eng priority 7 7 tunnel mpls traffic-eng bandwidth 20000
An LDP packet carries multiple label mapping messages.
No frame-relay inverse-arp
Mpls traffic-eng tunnels mpls label range 400 499
!
Interface tunnel0
O 10.1.12.0 [110/65536] via 10.1.23.2, 00:09:07, FastEthernet0/0
Router-id 4.4.4.4
Name: R2-PE1_t0 Status:
Redistribute isis ip level-2 into level-1 route-map test
Outgoing
Interface fas0/0
Virtual link
Network 3.3.3.3 0.0.0.0 area 0
3 area addresses. The latest IOS version can be set to 255. If the maximum number of area addresses supported by the two routers is inconsistent, that is, the MAX.Areas field does not match, the IIH message is ignored .
Routing entry for 5.5.5.0/24
Not triggered by ISH , once the interface is activated, the router floods the IIH message on the interface.
1.1.1.1/32
R3#show ip ospf database router 2.2.2.2
Once LDP is activated, the LSR generates a label locally for the prefix in the routing table, and then bundles it with the prefix to send the label mapping message to all LDP neighbors. When I receive the remote binding from the LDP neighbor , I bundle the tags and the local bindings that are localized for the specific prefix into the LIB .
!
The configuration of R5 is supplemented as follows:
Ip unnumbered loopback 0 tunnel destination 5.5.5.5 tunnel mode mpls traffic-eng
*Aug 18 04:37:06.239: Error Node: 10.1.12.2
10.1.12.2
Since RSVP has been able to complete the task of label allocation, there is no need to activate the Label Distribution Protocol ( LDP ) on the interface .
Route summarization on the L1/L2 router ( to level1 )
Modify the bandwidth UP/DOWN threshold
Network 10.1.34.3 0.0.0.0 area 0
!
*Aug 18 04:37:06.239: average rate=250000 bytes/sec, burst depth=1000 bytes
Mpls traffic-eng tunnels mpls label range 300 399
The above figure encapsulates a three-layer label package. For an LSR , only the first label is processed. Each layer of the label has a bottom of the BoS stack to indicate whether it is already the bottom of the stack of the label, and the last label has BoS=1 .
Tunnel mpls traffic-eng path-option 10 explicit name R2R4
Network 10.1.12.1 0.0.0.0 area 0
Tunnel mpls traffic-eng bandwidth 2000
Tib entry: 2.2.2.2/32, rev 6
75000
Link Link
1.0.0.0/24 is subnetted, 1 subnets
Path Protection
Comprising one or more routers is configured on the source IP address, the CISCO IOS in
Setting command
10.1.24.2 10.1.24.4
The configuration of R1 is as follows:
RFC1195
!
Metric Type: TE (default)
Mpls ldp router-id loopback0 mpls label range 200 299 interface fast0/0
So using this feature (an IS-IS process to configure multiple NET addresses), you can achieve:
Interface Tunnel0
Note: a IS-IS routing domain ( routing Domain ) does not necessarily need to have two levels, if only a region of deployment, it may be all L1 or all L2 of , recommended L2 of , to obtain a good scalability.
SNPA
Detailed LSP header
After everyone's LFIB is built, we can see that when A receives an IP packet and wants to access X , then A checks its own CEF table.
AutoRoute: disabled LockDown: disabled Loadshare: 20000 bw-based auto-bw: disabled
Name: R2-PE1_t0 Status:
Ip address 10.1.123.3 255.255.255.0
!
So far, the basic configuration has been completed. Now let 's create a TE Tunnel on R2 and R5 :
Mpls traffic-eng tunnels ip rsvp bandwidth
10.1.12.2 [MPLS: Label 203 Exp 0] 200 msec 84 msec 136 msec
Ip router isis
Router isis
When R1 recalculates the shortest path, it does not consider passing the R2 out area. Then there is only a default route to R3 on R1 . Of course, the route directly connected to R2 can still be seen on R1 .
3.3.3.3/32
Connection method)
Interface
To meet the above requirements, IS-IS is designed as a link state routing protocol and uses the SPF shortest path first algorithm to achieve fast convergence and loop-free networks.
Both TE3 and R5 must establish a TE tunnel . That is, the TE tunnel must be bidirectional.
PDU
*Aug 18 09:06:02.699: version=0 length in words=10
Isis password
Exam Code: 200-125
Certification Provider: Cisco
Certification Exam Name:CCNA Routing & Switching
Update Date: Apr 17,2024
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