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Inter VLAN Routing very slow with 1920 Switch

 
cristiano751
Occasional Advisor

Inter VLAN Routing very slow with 1920 Switch

hi

i have 5 1920 switch in my network; one of these if core switch (for VLAN routing), connect to firewall

I have 7 VLAN and 60 PC total on network; any pc have ip vlan for gateway

It's possible with routing is very very slow?

With the previous configuration (routing network with frirewall) the speed are very high....

I must change core switch 1920 with other models? Waht model?

thank's

13 REPLIES
parnassus
Honored Contributor

Re: Inter VLAN Routing very slow with 1920 Switch

It could be related to what was discussed here (HPE KB here). HPE OfficeConnect 1920 48 ports Switch model has higher ARP Size (256 entries) WRT all other models of the same family (60 entries).

Scheduling a switch reboot would probably help.

cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

I reboot the routing switch (1920 24) for test.

After 5 second the ARP menu content 54 record (IP <-> MacAdrs)...

After 2 minutes, 85 record

After 30 minutes (and now, after many hours), 101 record...

So, the problem is this only? Just change 1920 24 with 1920 48? i hope it's like that..

Do advise me to choose a more hight model?

Thank's

parnassus
Honored Contributor

Re: Inter VLAN Routing very slow with 1920 Switch

Probably using 48 ports model would circumvent your issue...consider that for very few Euros you can buy a 3Com 4800G (like JD007A), rebrand it to HP, upgrade it to very latest Firmware (11/2017) and the result is a super powerful L3 Switch (supporting 10G modules and IRF if necessary), avoiding those actual ARP thresholds...the Web GUI is identical to the one offered by 1920.
cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

But it's a new product?
I not found this by resellers..
Where i can buy it?
Thank's
cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

i found on ebay.... it's used

i prefer buy a new actual product. for my problem budget €1000/1200 should be enough, or no?!?!?

thank's

cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

Sorry but my customer ihas many problem for intravlan and i must resolve it immediatly

Model hp aruba 2920 or aruba 2930f it's fine? provide speed in intravlan?

many thank's

parnassus
Honored Contributor

Re: Inter VLAN Routing very slow with 1920 Switch

Aruba 2920, 2930M or 2930F...are OK: why not considering something like HPE OfficeConnect 1950 instead? it's Comware based (Comware 7 flavour, not the Comware 5 which run on the HPE OfficeConnect 1920 and HP 4800G) so more similar to Switch you are already managing.

cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

This model is more economical... not is a problem for global routing speed?

what is the Arp table size of 1950 or 2920 ?

parnassus
Honored Contributor

Re: Inter VLAN Routing very slow with 1920 Switch

Mate...MAC address table size can filled up with 16384 entries on HPE OfficeConnect 1950, 16000 entries on Aruba 2920. The Aruba 2920 IIRC has a larger Routing Table size...check yourself both datasheets/quickspecs.
cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

ok, but my problem is not mac table but ARP table (max 60 entries on 1920 24port, 254 entries on 192048...) - view your last post.

for switch 2920 and 1950 i not found information for ARP size limit..........

 

parnassus
Honored Contributor

Re: Inter VLAN Routing very slow with 1920 Switch

HPE OfficeConnect 1950 (source: latest Release Notes)

  • ARP Table size: up to 256 entries
  • MAC Addresses Table size: up to 16k entries

Aruba 2920 (source: latest QuickSpecs):

  • ARP Table size: up to 2048 entries (IPv4) <-- Aruba 2920 QuickSpecs document reports 2048 entries as "Routing Table size" upper limit for IPv4 (that limit decreases to 256 entries when considering IPv6)
  • MAC Addresses Table size: up to 16k entries
cristiano751
Occasional Advisor

Re: Inter VLAN Routing very slow with 1920 Switch

Thank's
Monday i test 2920 and report you
Bye
parnassus
Honored Contributor

Re: Inter VLAN Routing very slow with 1920 Switch

I'm pretty sure you're going to have no ARP related issues no matters which Switch series will be deployed...