MyNetSec

For those experiencing SSH slowness, you might want to take note of the following:  If you are getting sluggish response in getting the login prompt, it might be due to the fact the the SSH server is trying to perform a reverse lookout on host your are initiating traffic from. Check to confirm it any firewall rules that might be preventing the ssh host from doing a reverse lookup. That might save you sometime to perform a thorough troubleshooting :) Alternatively, you can just go to edit the sshd config file as follow: sudo  vi /etc/ssh/sshd_config comment out UseDNS  as per follow: #UseDNS yes and restart the ssh daemon sudo service sshd restart or sudo systemctl restart sshd. Happy SSH :)

CCIE Routing and Switching Lab Exam Topics (Blueprint) v4.0 The following topics are general guidelines for the content likely to be included on the lab exam. However, other related topics may also appear on any specific delivery of the exam. In order to better reflect the contents of the exam and for clarity purposes, the guidelines below may change at any time without notice. Exam Sections and Sub-task Objectives 1.00 Implement Layer 2 Technologies √ 1.10 Implement Spanning Tree Protocol (STP) (a) 802.1d (b) 802.1w (c) 801.1s (d) Loop guard (e) Root guard (f) Bridge protocol data unit (BPDU) guard (g) Storm control (h) Unicast flooding (i) Port roles, failure propagation, and loop guard operation 1.20 Implement VLAN and VLAN Trunking Protocol (VTP) 1.30 Implement trunk and trunk protocols, EtherChannel, and load-balance 1.40 Implement Ethernet technologies (a) Speed and duplex (b) Ethernet, Fast Ethernet, and Gigabit Ethernet (c) PPP over Ethernet (PPPoE) 1.5