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Chapter 6
Troubleshooting TCP/IP Connectivity
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,
E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, *
- candidate default
U - per-user static route, o - ODR
Gateway of last resort is not set
172.16.0.0/16 is variably subnetted, 2 subnets, 2
masks
D 172.16.50.0/24 [90/2195456] via 172.16.30.6,
00:00:19, Serial1
C 172.16.30.4/30 is directly connected, Serial1
Router_A>
Router_A>sho ip route 172.16.50.0
Routing entry for 172.16.50.0/24
Known via "eigrp 100", distance 90, metric 2195456, type
internal
Redistributing via eigrp 100
Last update from 172.16.30.6 on Serial1, 00:02:03 ago
Routing Descriptor Blocks:
* 172.16.30.6, from 172.16.30.6, 00:02:03 ago, via
Serial1
Route metric is 2195456, traffic share count is 1
Total delay is 21000 microseconds, minimum bandwidth
is 1544 Kbit
Reliability 128/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
Router_A>
show ip arp
This command provides information contained in the
router's ARP cache. Information includes the IP address, MAC address,
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