Thursday, 15 December 2011

HP and Cisco commands Reference

Hi Everyone , forget about the fight which one is the better technology every product have its on Pros and Cons .
I am sharing here some terminologies and command differences , I hope they would be helpful

HP aggregated interfaces are called trunks and Cisco it is EtherChannel.

The confusion arises because term trunk is used differently in Cisco and HP. In Cisco trunk is an interface that is configured to support 802.1Q (VLAN). which is configured to support multiple VLANs is called a trunk however in HP Prociurve operating system, an interface that supports multiple VLANs is tagged.

Remeber these guidelines

An “access port” on Cisco is an “untagged port” on HP ProCurve.
A “trunk port” on Cisco is a “tagged port” on HP ProCurve.
A “port channel” on Cisco is called a “trunk” on HP ProCurve.
A Cisco "Access port" is "untagged" in HP Procurve

Trunking from the ProCurve side is meant to aggregate multiple ports together, while on Cisco it is meant to transport multiple VLANs over one port.

Link aggregation on the Cisco side is called “channeling"

*****Some main Hints and Tips******

Pay attention to multi-VLAN ports.
Make sure that the native VLAN on the Cisco trunk is the untagged VLAN on the ProCurve tagged port.
Ensure that the same VLANs are allowed and configured on both sides.
Remember that, unlike with Cisco, BPDUs (spanning tree, LLDP, and LACP) are not attached to the untagged port or any VLAN on HP ProCurve

To combine Cisco and HP ProCurve spanning tree networks, MSTP can be run on the Cisco devices, or PVST Cisco networks can be combined with MSTP HP ProCurve networks, I am running PVST on Cisco network and I added couple of HP Procurves with RSTP and didn't caused any problem, make sure you modify the priority at HP or cisco as per requirement.

Cisco supports Hot Standby Router Protocol (HSRP), and HP ProCurve supports Virtual Router Redundancy Protocol (VRRP), during migration ensure that both cores are from the same
vendor, whether HP ProCurve or Cisco. If you replace one core, replace the other at the same time.

Finally Routing Protocol HP doesn't support Cisco proprietary routing protocols.

There are some minor differences to consider between the two different OSPF implementations:

  • Cisco OSPF is enabled with network statements globally.

  • HP ProCurve OSPF is enabled within the VLAN context.

  • There are redistribution differences.

  • HP ProCurve is always non-broadcast multiple access (NBMA).

  • Cisco uses the highest loopback IP address for router ID, while HP ProCurve devices typically use the lowest.

  • With HP ProCurve, the loopback is always /32 mask.

  • With HP ProCurve, the OSPF link cost is “1” by default.

1 comment:

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