RT @CiscoSecurity At a loss with regard to how to secure mobile devices (beyond AnyConnect)? This may help http://t.co/ANRApvMC
Author: admin
Cisco IOS Subnet Calculator
Oct 24 2011
Cisco IOS Subnet Calculator
Quick one this morning. IOS has loads of pretty much undocumented features (e.g. using the “do” command in config mode) that make life so much easier. We’ve come across another one – the “terminal ip netmask-format” command. This allows you to display the netmask on an interface is one of three formats – bit-count (slash notation), decimal and hex. Avoids the constant use of all of those subnet calculators!
Router#terminal ip netmask-format bit
Router#show int f0/0.1
FastEthernet0/0.1 is up, line protocol is up
Hardware is Gt96k FE, address is 001b.d58f.76de (bia 001b.d58f.76de)
Internet address is 10.1.200.254/24
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1.
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of “show interface” counters never
Router#terminal ip netmask-format decimal
Router#show int f0/0.1
FastEthernet0/0.1 is up, line protocol is up
Hardware is Gt96k FE, address is 001b.d58f.76de (bia 001b.d58f.76de)
Internet address is 10.1.200.254 255.255.255.0
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1.
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of “show interface” counters never
Router#terminal ip netmask-format hex
Router#show int f0/1.1
FastEthernet0/0.1 is up, line protocol is up
Hardware is Gt96k FE, address is 001b.d58f.76de (bia 001b.d58f.76de)
Internet address is 10.1.200.254 0xFFFFFF00
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation 802.1Q Virtual LAN, Vlan ID 1.
Keepalive set (10 sec)
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of “show interface” counters never
Barry Hesk
Cisco announces new Nexus Switches and ASA
20th October 2011
Cisco announces new Nexus Switches
Cisco today announced their latest iteration of the Nexus coverged storage and data switches.
Network World have a good article covering the announcements
In summary:
- New switching fabric called imaginatively, “fabric-2” which scales to 550GB per slot – more than twice the thoughput on the original fabric.
- New Nexus 3016 which provides 16 ports of 40GB Ethernet.
- New Nexus 4048 – provides 48 10/100/1000 Mbps ports plus 10GB uplinks
- Fabricpath support for the Nexus 5500 series providing multiple active layer 2 paths across a “top of rack” topology
- ASA 1000V firewall – Cisco’s first purely software based firewall – using the same underlying technology as the 1000V switch
Price points are said to be “competitive” – which for Nexus probably means “expensive”.
Barry Hesk
RT @ciscosubnet Enterasys OneF…
RT @ciscosubnet Enterasys OneFabric Makes Sense http://t.co/DRWxYqZo
RT @CiscoSecurity Cisco PCI De…
RT @CiscoSecurity Cisco PCI Design and Implementation Guide – http://t.co/S5Rsmf95 – blueprints make building things easier
Interesting post from Brad Hedlund relating to network virtualization
17th October 2011
Work in progress, however interesting reading nonetheless.
http://bradhedlund.com/2011/10/12/network-virtualization-is-like-a-big-virtual-chassis/
Barry Hesk
Cisco and HP working together again..?
17th October 2011
Cisco and HP working together again..?
Following their well documented falling out a couple of years ago when Cisco moved aggressively into the Data Centre server market to compete directly against HP, the two companies haven’t exactly been on speaking terms. Indeed, HP’s acquisition of 3COM was almost definitely a reaction to this spat and Cisco no longer re-badge any of HP’s technology in the MCS 7800 server range, with all of these units coming from IBM.
However, maybe things are changing. Cisco and HP have collaborated on the Cisco Nexus B22 Fabric Extender for HP. This unit offers tight integration between HP BladeSystem and Cisco Nexus 5000/7000 switches.
More details on the solution are available here.
Maybe a solution for world peace may be possible after all then….
Barry
Cisco Unified IP Phones Guide
October 14th 2011
Cisco Unified IP Phones Guide
Cisco’s sales prevention department must be taking a day off, and someone has sneaked out this really useful guide that covers all their different handset types. If I were you, I’d download it before they come back to work…
Download the guide here
Barry Hesk
Cisco October 2011 Product Quick Reference Guide
October 14th 2011
Cisco October 2011 Product Quick Reference Guide
I recently retweeted a link from Cisco that provided access (supposedly) to an online version of the new October 2011 Product Guide.
Obviously Cisco likes to keep things a secret as the process for actually getting hold of the thing was convoluted at best. Maybe we’re all under a need to know basis, and we don’t need to know.
Anyway, I’ve managed to download the thing and have put it into the Downloads section of the Intrinsic web site. This is password protected (following Cisco’s security model) so if you need to grab a hold of it, let us know (email info@intrinsic-comms.co.uk) and we’ll define you an account.
Barry Hesk
RT @CiscoSecurity Cisco Produc…
RT @CiscoSecurity Cisco Product Quick Reference Guide is now available – hardcopy and PDF! http://t.co/mKfRVCJc #getitnow