Difference between revisions of "CCNP TSHOOT Learning Guide/Chapter 5"
From Teknologisk videncenter
m (→Troubleshooting EIGRP) |
m (→Troubleshooting OSPF) |
||
| Line 213: | Line 213: | ||
=Troubleshooting OSPF= | =Troubleshooting OSPF= | ||
| + | {|border=1 ;style="margin: 0 auto; text-align: center;cellpadding="5" cellspacing="0" | ||
| + | |+ OSPF tables | ||
| + | |- bgcolor=lightgrey | ||
| + | ! Table !! Description | ||
| + | |- | ||
| + | | Interface table || List all interfaces enabled for OSPF. The directly connected subnets are included in the TYPE-1 Router LSA the Router injects into the OSPF link-state database. Passive-interfaces '''is''' listed in the tables | ||
| + | |- | ||
| + | |Neighbor table || Used to keep track of all OSPF neighbors. Neighbors are added on the reception of a hello packet and removed when the dead-time expires or when the associated interface goes down. | ||
| + | |- | ||
| + | |Link State database || Main data structure containing all network topology information for the OSPF process. | ||
| + | |- | ||
| + | |Routing Information Base ||Contains results from the SPF algorithm. OSPF offers the contents of the RIB to the Routing Table. | ||
| + | |} | ||
| + | ==INSERT TABLE 5.2 and FIGURE 5.3 from page 168 == | ||
| + | == Cisco IOS OSPF commands == | ||
| + | === Show commands === | ||
| + | *'''show ip ospf interface''' | ||
| + | *'''show ip ospf neighbor''' | ||
| + | *'''show ip ospf datatbase''' | ||
| + | *'''show ip ospf statistics''' | ||
| + | === debug commands === | ||
| + | *'''debug ip routing''' | ||
| + | *'''debug ip ospf packet''' | ||
| + | *'''debug ip ospf adj''' | ||
| + | *'''debug ip ospf monitor''' | ||
| + | |||
=Troubleshooting BGP= | =Troubleshooting BGP= | ||
[[Category:CCNPv6]][[Category:CCNPv6 TSHOOT]] | [[Category:CCNPv6]][[Category:CCNPv6 TSHOOT]] | ||
Revision as of 15:40, 18 June 2010
Maintaining and Troubleshooting Routing Solutions
Contents
Redistributiuon
| Protocol | Default Seed Metric |
|---|---|
| RIP | Infinity |
| IGRP/EIGRP | Infinity |
| OSPF | 20 except from BGP then 1 |
| ISIS | 0 |
| BGP | IGP |
IOS Commands to verify Routing Functions
Verifying and Troubleshooting Route Propagation
Debug ip routing
R1#<input>debug ip routing</input>
IP routing debugging is on
R1#<input>sh ip route</input>
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is 209.165.200.226 to network 0.0.0.0
209.165.200.0/24 is variably subnetted, 2 subnets, 2 masks
C 209.165.200.224/30 is directly connected, Serial0/0/0
C 209.165.200.226/32 is directly connected, Serial0/0/0
10.0.0.0/8 is variably subnetted, 9 subnets, 3 masks
D 10.1.10.0/24 [90/28416] via 10.1.2.1, 02:28:50, FastEthernet0/1
D 10.1.2.12/30 [90/30976] via 10.1.2.1, 02:28:50, FastEthernet0/1
C 10.1.2.0/30 is directly connected, FastEthernet0/1
D 10.1.30.0/24 [90/28416] via 10.1.2.1, 02:28:51, FastEthernet0/1
D 10.1.20.0/24 [90/28416] via 10.1.2.1, 02:28:51, FastEthernet0/1
D 10.1.50.0/24 [90/28416] via 10.1.2.1, 02:28:51, FastEthernet0/1
D 10.1.100.0/24 [90/28416] via 10.1.2.1, 02:28:51, FastEthernet0/1
D 10.1.203.1/32 [90/158976] via 10.1.2.1, 02:28:51, FastEthernet0/1
D 10.1.200.0/24 [90/28416] via 10.1.2.1, 02:28:51, FastEthernet0/1
C 192.168.1.0/24 is directly connected, Loopback0
S* 0.0.0.0/0 [1/0] via 209.165.200.226
R1#<input>sh run | section router eigrp</input>
router eigrp 1
redistribute static
passive-interface default
no passive-interface FastEthernet0/1
network 10.1.2.0 0.0.0.3
network 192.168.1.1 0.0.0.0
no auto-summary
R1#<input>clear ip eigrp 1 neighbors</input>
R1#
Jun 18 12:45:44.546: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: <notice>Neighbor 10.1.2.1 (FastEthernet0/1) is down: manually cleared</notice>
Jun 18 12:45:44.546: RT: delete route to 10.1.10.0 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:44.546: RT: no routes to 10.1.10.0
Jun 18 12:45:44.546: RT: NET-RED 10.1.10.0/24
Jun 18 12:45:44.546: RT: delete subnet route to 10.1.10.0/24
Jun 18 12:45:44.546: RT: NET-RED 10.1.10.0/24
Jun 18 12:45:44.546: RT: delete route to 10.1.2.12 via 10.1.2.1, eigrp metric [90/30976]
Jun 18 12:45:44.546: RT: no routes to 10.1.2.12
Jun 18 12:45:44.546: RT: NET-RED 10.1.2.12/30
Jun 18 12:45:44.546: RT: delete subnet route to 10.1.2.12/30
Jun 18 12:45:44.546: RT: NET-RED 10.1.2.12/30
Jun 18 12:45:44.546: RT: delete route to 10.1.30.0 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:44.546: RT: no routes to 10.1.30.0
Jun 18 12:45:44.546: RT: NET-RED 10.1.30.0/24
Jun 18 12:45:44.546: RT: delete subnet route to 10.1.30.0/24
Jun 18 12:45:44.546: RT: NET-RED 10.1.30.
R1#0/24
Jun 18 12:45:44.550: RT: delete route to 10.1.20.0 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:44.550: RT: no routes to 10.1.20.0
Jun 18 12:45:44.550: RT: NET-RED 10.1.20.0/24
Jun 18 12:45:44.550: RT: delete subnet route to 10.1.20.0/24
Jun 18 12:45:44.550: RT: NET-RED 10.1.20.0/24
Jun 18 12:45:44.550: RT: delete route to 10.1.50.0 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:44.550: RT: no routes to 10.1.50.0
Jun 18 12:45:44.550: RT: NET-RED 10.1.50.0/24
Jun 18 12:45:44.550: RT: delete subnet route to 10.1.50.0/24
Jun 18 12:45:44.550: RT: NET-RED 10.1.50.0/24
Jun 18 12:45:44.550: RT: delete route to 10.1.100.0 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:44.550: RT: no routes to 10.1.100.0
Jun 18 12:45:44.550: RT: NET-RED 10.1.100.0/24
Jun 18 12:45:44.550: RT: delete subnet route to 10.1.100.0/24
Jun 18 12:45:44.550: RT: NET-RED 10.1.100.0/24
Jun 18 12:45:44.550: RT: delete route to 10.1.203.1 via 10.1.2.1, eigrp metric [90/158976]
Jun 18 12:45:44.550: RT: no routes to 10.1.203.1
Jun 18 12:45:44.550: RT: NET-RED 10.1.203.1/32
Jun 18 12:45:44.550: RT: delete subnet route to 10.1.203.1/32
Jun 18 12:45:44.550: RT: NET-RED 10.1.203.1/32
Jun 18 12:45:44.554: RT: delete route to 10.1.200.0 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:44.554: RT: no routes to 10.1.200.0
Jun 18 12:45:44.554: RT: NET-RED 10.1.200.0/24
Jun 18 12:45:44.554: RT: delete subnet route to 10.1.200.0/24
Jun 18 12:45:44.554: RT: NET-RED 10.1.200.0/24
Jun 18 12:45:46.558: RT: NET-RED 0.0.0.0/0
Jun 18 12:45:47.214: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 1: <notice>Neighbor 10.1.2.1 (FastEthernet0/1) is up: new adjacency</notice>
Jun 18 12:45:47.258: RT: network 10.0.0.0 is now variably masked
Jun 18 12:45:47.258: RT: add 10.1.10.0/24 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:47.258: RT: NET-RED 10.1.10.0/24
Jun 18 12:45:47.258: RT: add 10.1.20.0/24 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:47.258: RT: NET-RED 10.1.20.0/24
Jun 18 12:45:47.258: RT: add 10.1.30.0/24 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:47.258: RT: NET-RED 10.1.30.0/24
Jun 18 12:45:47.262: RT: add 10.1.50.0/24 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:47.262: RT: NET-RED 10.1.50.0/24
Jun 18 12:45:47.262: RT: add 10.1.100.0/24 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:47.262: RT:
R1#NET-RED 10.1.100.0/24
Jun 18 12:45:47.262: RT: add 10.1.200.0/24 via 10.1.2.1, eigrp metric [90/28416]
Jun 18 12:45:47.262: RT: NET-RED 10.1.200.0/24
Jun 18 12:45:47.262: RT: add 10.1.2.12/30 via 10.1.2.1, eigrp metric [90/30976]
Jun 18 12:45:47.262: RT: NET-RED 10.1.2.12/30
Jun 18 12:45:47.262: RT: add 10.1.203.1/32 via 10.1.2.1, eigrp metric [90/158976]
Jun 18 12:45:47.262: RT: NET-RED 10.1.203.1/32
R1#<input>no debug ip routing</input>
IP routing debugging is offRoute Profiling
R1(config)#<input>ip route profile</input>
R1(config)#<input>^Z</input>
Jun 18 12:46:41.803: %SYS-5-CONFIG_I: Configured from console by console
R1#<input>sh ip route profile</input>
IP routing table change statistics:
Frequency of changes in a 5 second sampling interval
-------------------------------------------------------------
Change/ Fwd-path Prefix Nexthop Pathcount Prefix
interval change add change change refresh
-------------------------------------------------------------
0 2 2 2 2 1
1 0 0 0 0 1
2 0 0 0 0 0
3 0 0 0 0 0
4 0 0 0 0 0
5 0 0 0 0 0
10 0 0 0 0 0
15 0 0 0 0 0
20 0 0 0 0 0
25 0 0 0 0 0
30 0 0 0 0 0
55 0 0 0 0 0
80 0 0 0 0 0
105 0 0 0 0 0
130 0 0 0 0 0
155 0 0 0 0 0
280 0 0 0 0 0
405 0 0 0 0 0
-------------------------------------------------------------
Change/ Fwd-path Prefix Nexthop Pathcount Prefix
interval change add change change refresh
-------------------------------------------------------------
530 0 0 0 0 0
655 0 0 0 0 0
780 0 0 0 0 0
1405 0 0 0 0 0
2030 0 0 0 0 0
2655 0 0 0 0 0
3280 0 0 0 0 0
3905 0 0 0 0 0
7030 0 0 0 0 0
10155 0 0 0 0 0
13280 0 0 0 0 0
Overflow 0 0 0 0 0
R1#<input>conf t</input>
R1(config)#<input>no ip route profile</input>show ip cef
SW1#show ip cef exact-route 172.16.4.16 192.168.22.73
172.16.4.16 -> 192.168.22.73 => IP adj out of Vlan1, addr 172.16.4.16show ip prot
remember
Route-maps
prefix lists
Troubleshooting EIGRP
EIGRP uses three tables
- interface table:
| Table | Description |
|---|---|
| Interface | Contains list of all interfaces that have been enabled for processing of EIGRP packets. Passive interfaces are not listed in this table. |
| Neighbor | Keeps track of all active EIGRP neighbors. Neighbours are added on the reception of hello packet and are removed when the hold-time expires or when the associated interface goes down or removed from the Interface table. This table also keeps track on status on Routing information exchanged. |
| Topology | Holds all Routes received from neighbors, locally injected or redistributed into EIGRP. EIGRP selects the best routes from this table based on the DUAL algorithm. |
Monitoring EIGRP
show commands
- show ip eigrp interface
- show ip eigrp neighbors
- show ip eigrp topology
debug commands
- debug ip routing
- debug eigrp packets - Many options here (terse - except hello packets)
- debug ip eigrp neighbor as-number network mask
- debug ip eigrp as-number network mask - limit info. from debug eigrp packets
Troubleshooting OSPF
| Table | Description |
|---|---|
| Interface table | List all interfaces enabled for OSPF. The directly connected subnets are included in the TYPE-1 Router LSA the Router injects into the OSPF link-state database. Passive-interfaces is listed in the tables |
| Neighbor table | Used to keep track of all OSPF neighbors. Neighbors are added on the reception of a hello packet and removed when the dead-time expires or when the associated interface goes down. |
| Link State database | Main data structure containing all network topology information for the OSPF process. |
| Routing Information Base | Contains results from the SPF algorithm. OSPF offers the contents of the RIB to the Routing Table. |
INSERT TABLE 5.2 and FIGURE 5.3 from page 168
Cisco IOS OSPF commands
Show commands
- show ip ospf interface
- show ip ospf neighbor
- show ip ospf datatbase
- show ip ospf statistics
debug commands
- debug ip routing
- debug ip ospf packet
- debug ip ospf adj
- debug ip ospf monitor