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knotseh
  • Member for 9 years, 3 months
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39 votes
8 answers
31k views

How would a router with /32 WAN subnet mask communicate with the rest of the Internet?

  • 685
30 votes
5 answers
30k views

Are CoS and QoS ever interchangeable?

  • 2,067
27 votes
1 answer
11k views

Route servers and looking glasses - what are they?

  • 8,887
24 votes
1 answer
849 views

Should IPv4 ICMP from untrusted interfaces be blocked?

  • 343
22 votes
10 answers
27k views

How to generate traffic for lab scenarios [closed]

  • 3,300
19 votes
5 answers
18k views

Should portfast be used on a port potentially connecting to an unmanaged switch?

19 votes
1 answer
3k views

Finding transparent firewall packet loss

  • 285
18 votes
3 answers
6k views

Writing text to the log

  • 623
18 votes
4 answers
25k views

Cisco APs ignore DHCP Option 43 and use CAPWAP UDP broadcasts

18 votes
1 answer
3k views

Why do some common traceroute implementations default to using UDP probes?

  • 869
16 votes
6 answers
15k views

Use BGP to defend against a DDoS attack originating from remote AS

14 votes
1 answer
6k views

Troubleshooting low Metro Ethernet TCP throughput

  • 1,173
14 votes
1 answer
50k views

Getting Cisco ISAKMP and IPSec SA lifetime confused

  • 837
13 votes
1 answer
12k views

How can a TCP window size be allowed to be larger than the maximum size of an ethernet packet?

13 votes
2 answers
3k views

Detecting different Ethernet frames

13 votes
1 answer
14k views

What is the 5 level QoS model (through config example)?

  • 5,270
12 votes
7 answers
3k views

Accurate strategy for measuring point-to-point link performance?

  • 2,067
12 votes
1 answer
16k views

Cisco ISR G2 encrypted bandwidth restriction?

  • 8,258
12 votes
1 answer
642 views

Cisco ASA: What is the "tx hangs" counter on show interface?

  • 828
12 votes
1 answer
5k views

Is it possible to connect two private eBGP peers with the same AS number?

12 votes
1 answer
2k views

What is the "NDE" interface on a Cisco 6500?

  • 1,677
12 votes
2 answers
15k views

Directed and Limited Broadcast confusion

12 votes
1 answer
7k views

Translating SNMPWALK output into human-readable format

  • 685
11 votes
11 answers
4k views

Locate a host on Network

  • 467
11 votes
3 answers
6k views

What is the proper way to config a Site to Site IPSEC VPN and a Remote Access VLAN on the same external interface? Cisco 891 ISR

10 votes
3 answers
4k views

Inbound BGP load-balancing from same ISP router

10 votes
1 answer
5k views

Unicast RPF On the Edge

  • 306
10 votes
2 answers
3k views

How does nmap distinguish closed ports from filtered ports

  • 203
10 votes
1 answer
8k views

Authenticate ssh key via Cisco ACS (TACACS+)

  • 362
10 votes
2 answers
2k views

Why does Cisco ios save and display access list entries out of order?