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5 votes
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Computer mac address appearing on more than one switch

2 of those 3 ports are ports that connect to another switch. If you don't know which ones, I don't know HP command syntax but there is probably a command like show mac port xx, if that show multiple ...
hertitu's user avatar
  • 2,658
5 votes
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Port Security Or 802.1X Authentication On Non-Server Network

The 2910al supports 802.1X port security as authenticator, using RADIUS over EAP or PEAP. Depending on your exact goals, an additional router is not required but you do need a RADIUS server. Check the ...
Zac67's user avatar
  • 85.4k
5 votes
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Why does the HP Procurve show MAC addresses as 64bit and what do the first 16bits represent?

P1.17 is ancient (March 2010). Our 1810Gs - v1 and v2 - show MAC addresses as 48 bit. I'd update the firmware; P2.23 is latest for v1. If you do need an answer to what the two additional octets ...
Zac67's user avatar
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5 votes
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what will change in a trunk between lacp mode and trunk mode?

LACP is a protocol where both side negotiate the trunk - if either side doesn't use LACP both (all) links will stay separate. STP may step in and prevent a bridge loop. A static trunk uses no ...
Zac67's user avatar
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4 votes
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How to set IPv6 RA values for RDNSS and DNSSL on HPE/Aruba 5400R

As it turns out this cannot be configured in a sane manner. Both values are taken from the configuration of the DNS resolver and search-list for the management plane of the switch. This implies that ...
Andreas Rogge's user avatar
4 votes

HP ProCurve 2520G Switch not accepting HP transceiver SFP

The 468508-002 is a short-wave (850 nm) 8Gb SFP+ transceiver for Fibre Channel. It is not compatible with Ethernet switches and won't ever work in a 2520. Provision switches like the 2520 series ...
Zac67's user avatar
  • 85.4k
4 votes
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Subinterface on Cisco ASA 5550 does not work with VLAN on HP ProCurve

Solved. I registered VLAN 810 on two interfaces on switch to ASA (we have two devices ASA in stack failover). Don't trust GVRP. :-)
Ruslan's user avatar
  • 155
4 votes

Prevent Users from Setting Specific Static IP

The 5400 series supports DHCP snooping with ARP protection which is your best option. Those force a client to use the IP address it is assigned by the authorized DHCP server(s). Any other traffic is ...
Zac67's user avatar
  • 85.4k
4 votes
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MSTP with different VLANs blocking port

In order for MSTP to split VLAN traffic across redundant trunks you need to configure MSTP instances in the exact same way on all switches within a region. The switches exchange config digests that ...
Zac67's user avatar
  • 85.4k
4 votes

MSTP with different VLANs blocking port

You have a fairly common problem with MSTP, which is thinking it should work like PVST, when it's a completely different animal. The concept that you have to get your head around is that in PVST you ...
richardb's user avatar
  • 1,608
4 votes
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Tagged-only VLANs

What is the purpose of a vlan containing only tagged ports? Likely, those (trunk) ports interconnect VLANs spanning multiple switches. It's also possible that a trunk leads to a VLAN-aware host or a ...
Zac67's user avatar
  • 85.4k
3 votes

Help setting up multiple IP ranges on same subnet

There are a couple of things you could do: Change the network mask to expand the address range. For example, change the mask length to /23 to double , or /22 to quadruple, the number of network ...
Ron Maupin's user avatar
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3 votes

How can I change the IP address of a running switch (HP 2510)?

You normally would just overwrite it with e. g.: vlan 1 ip address 10.10.10.11/8 But if you stay on the same subnet, the switch will complain: The IP address (or subnet) 10.10.10.11/8 already exists. ...
stackprotector's user avatar
3 votes

How can I change the IP address of a running switch (HP 2510)?

It can be problematic to change an address remotely. The best option is to do it in person from the directly attached console. To move the switch to a different subnet, that is indeed what is required....
Ricky's user avatar
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3 votes

HP ProCurve 2524 - CLI Command to find Fiber Transceiver's Serial Number

show tech transceiver should work on the old Procurves, at least it does on the 2510 and 2600 series. Somewhat newer Provision switches (2910, 2530, ...) support show interfaces transceiver [n] ...
Zac67's user avatar
  • 85.4k
3 votes

HP ProCurve 2524 - CLI Command to find Fiber Transceiver's Serial Number

Try display transceiver interface <interface-id>.
ConnectingPeople's user avatar
3 votes

Is there a similar command to Cisco's "dir all" on a HP Procurve switch?

Comware switches (former 3Com aka H3C) seem to support dir but Provision ones don't. You can check your firmware versions/files by running show flash. Configuration files are displayed by show ...
Zac67's user avatar
  • 85.4k
3 votes
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Give internet access with a not VLAN enabled router to two VLAN networks

Connecting a VLAN to a device without tagging support requires a dedicated, untagged port ("access"). In reverse, a device without VLAN support can only use a single, untagged VLAN on each ...
Zac67's user avatar
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3 votes
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Configuring multiple management ports (HP/Aruba)

On the 5400R zl2 series, the front management ports are for dedicated out-of-band management (OOBM). You can connect them to a dedicated management network - if you have one - or use them locally in ...
Zac67's user avatar
  • 85.4k
2 votes

How can I change the IP address of a running switch (HP 2510)?

If you have more than one VLAN running (lets say 10 with 10.10.10.10 and 20 ) on the switch you could give the switch an IP address in another VLAN Interface (i. e. VLAN 20 with 20.20.20.20); check if ...
Pompi's user avatar
  • 131
2 votes

How to enable PoE on HP ProCurve 2650

To recap my and others comments, the HP 2600 series (J4899B in your case) doesn't support PoE, so it can't be enabled. The 2600-PWR series does. On other HP switches that do support PoE, all PoE ...
Stuggi's user avatar
  • 2,269
2 votes
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Cannot access serial connection with putty to the HP Procurve 2524

Probably the baud rate is fixed to something you didn't try. If you can run a telnet or ssh session, you can check the serial console setting with show console. You can reset to default settings by ...
Zac67's user avatar
  • 85.4k
2 votes

Cannot access serial connection with putty to the HP Procurve 2524

HP Procurves should auto-sense any reasonable speed, but 8-N-1-XOn/XOff are required.
Ted Quanstrom's user avatar
2 votes
Accepted

HP 8206zl not delivering PoE 802.03at to Meraki AP

I found the issue, it has to do with the device itself, specifically an Meraki MR42 AP. When the 802.03at Meraki APs first powers up, it does so in 802.03af mode, thus limiting the power it can draw. ...
Stuggi's user avatar
  • 2,269
2 votes

DHCP Snooping on HP 2510 or alternate

Since this is still open: the 2510 doesn't support DHCP snooping nor ACLs that could be used in a similar way. protected-ports can be used to prevent communication between client ports, seemingly ...
Zac67's user avatar
  • 85.4k
2 votes
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Can't upload the config file of an HP Procurve switch inti a tftp server on ubuntu

It's most likely a tftpd configuration problem: it is rather picky. Check you are running as a user with write permissions, that SELinux isn't preventing writes; read very carefully the man page, ...
richardb's user avatar
  • 1,608
2 votes

HP 5400Rzl2 strange ACL behaviour

Got it! It's a software bug on releases prior to KB.15.17.0008. From the Release Notes: CR_0000174881, CR_0000176140 The switch does not initiate an ARP request to the next hop IPv4 address for ...
rui's user avatar
  • 33
2 votes
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HP 5400Rzl2 strange ACL behaviour

I'm not sure that's a loop. I'm not really sure what that is. The ACL looks fine so you probably want to talk to HP about this. I had a case similar to this where a procurve based L3 switch would not ...
Mark's user avatar
  • 391

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