![]() ![]() Quality: Excellent for its intended purpose as a learning tool. Usefulness for CCNA: Supports 90+ of the CCNA config/verify topics. Low CPU & RAM: It should run on the computer you already own as a desktop app. O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers. However, Cisco Packet Tracer has some significant advantages for CCNAs: Cost: Free. Here is the situation: I have multiple (ubiquiti) edgerouters, strung together with OpenVPN. ![]() Get Cisco IOS Cookbook, 2nd Edition now with the O’Reilly learning platform. Ok, this is going to be either very easy or very complicated. It: Router1# show interface Tunnel5 Tunnel5 is up, line protocol is up Hardware is Tunnel Internet address is 192.168.66.5/ bytes, BW 9 Kbit, DLY 500000 usec, reliability 255/255, txload 1/255, rxload 1/255 Encapsulation TUNNEL, loopback not set Keepalive not set Tunnel source 172.22.1.3, destination 172.22.1.4 Tunnel protocol/transport GRE/IP, key disabled, sequencing disabled Tunnel TTL 255 Checksumming of packets disabled, fast tunneling enabled Last input 1d19h, output 00:00:06, output hang never Last clearing of "show interface" counters never Input queue: 0/75/0/0 (size/max/drops/flushes) Total output drops: 79 Queueing strategy: fifo Output queue: 0/0 (size/max) 5 minute input rate 0 bits/sec, 0 packets/sec 5 minute output rate 0 bits/sec, 0 packets/sec 2536 packets input, 1386605 bytes, 0 no buffer Received 0 broadcasts, 0 runts, 0 giants, 0 throttles 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 23235 packets output. Interface to see a considerable amount of useful information about You can use the standard show interface command on a tunnel ![]()
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