Category Archives: Networking

Cisco CCNP Training Course – Day 8 – SWITCH

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So day 8 essentially was the last day of the bootcamp, with Day 9 + 10 being left for TSHOOT, of which there is very little documented, as its……. troubleshooting a broken system.

So Day 8, let’s get to it.

Here’s whats covered;

  • HSRP Continued…..
    • comparison between HSRP and VRRP
    • GLBP – Gateway Load Balancing Protocol
  • Port-Security
  • Private VLANs
  • AAA – Authentication, Authorization, Accounting
  • VLAN Access-List
  • DHCP Snooping
  • ARP Poisoning / Man in the Middle
  • IP Spoofing
  • Other security considerations
  • Logging
  • MLS-Mutli-Layer Switching
    • Process Switching
    • Fast Switching
    • CEF
  • Voice – IP Telephony
  • QoS – Quality of Service
    • Layer 2 – Class of Service
    • Layer 3 – IP Precedence (Old setting)
    • Layer 3 – DSCP – Sub Marking (New setting)
    • Configuration of QoS
  • And that’s all folks

Continue reading Cisco CCNP Training Course – Day 8 – SWITCH →

Cisco CCNP Training Course – Day 7 – SWITCH

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Lets Jump straight in…

Covered is

  • MST Config
  • Etherchannel
  • Spanning-Tree
  • BPDU Guard, Filter, Loop Guard, Root Guard, UDLD
  • Uplink Fast, Backbone Fast
  • HSRP
MST Config
(config)#spanning-tree mode mst
(config)#spanning-tree mst configuration
(config-mst)#name (value)
(config-mst)#revision (value)
(config-mst)#instance (value) vlan (value) (Eg. 1-3, 1,3,5 or 1-3,5,7)
(config-mst)#end (applies the configuration)
(config)#spanning-tree mst (instance No.) root (primary/secondary)

To see the configuration, whilst in spanning-tree mode mst; Continue reading Cisco CCNP Training Course – Day 7 – SWITCH →

vmware

Using VMware and CDP information (HP and Cisco Switches)

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So on of the most valuable networking features of VMware is setting up CDP information or LLDP (if using non cisco devices). We can see exactly which VMNIC is plugged into which port.

ESXi can receive and display CDP information within the client or web client, but this doesn’t work with HP switches which use LLDP, which you will see in the below examples for both vendors.

Below the environment is plugged into a HP switch and no CDP information is being displayed into the standard switch, however we can send CDP information from VMware ESXi to the HP switch. (But from a Cisco Switch the information does show)

2014-10-06_18-27-09

Continue reading Using VMware and CDP information (HP and Cisco Switches) →

teaser pptp tunnel big hover 01

Creating VPN tunnel between Cisco ASA and Watchguard XTM

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Today was the second time I’ve done this in around a year, it’s a little uncommon to be honest, which means googling advice on how to do it, is a bit thin.

Todays walk through is also made even more different by the fact that at the branch site containing the Watchguard, its connected to a Cisco 857w router, with a Public IP address NAT’d to it due to the site having an ASDL connection.

See the below diagram I’ve sketched up in visio;

Cisco to Watchguard diagram

It’s actually easy enough to setup, the official documentation on the Watchguard is here, but doesnt cover it all.

Continue reading Creating VPN tunnel between Cisco ASA and Watchguard XTM →