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S5500G - DHCP Relay stops working and new clients fail to get an IP Address

MaccaM
Occasional Collector

S5500G - DHCP Relay stops working and new clients fail to get an IP Address

This support reference for  HP switch 5500G (AKA 3Com 5500G-EI) is exactly the error I’m getting on our S5500-24G EI switch A5500

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=110&prodSeriesId=4177876&prodTypeId=12883&objectID=c02601694

The software versions (3Com’s ?) bear no relation to the HP version numbers.

In our case the issue started after about 180 days uptime.

A reboot has resolved the issue (at least temporarily – presumably cleared the dynamic  table)

 

This other reference describes to a related error but has the ‘correct’ software versions indicated:

http://bizsupport1.austin.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&taskId=125&prodSeriesId=4174795&prodTypeId=12883&objectID=c02601502&printver=true

 

It also refers to the dhcp relay hand disable command in versions 2202P15 or later

 

So, I downloaded  the latest, H3C S5500EI-CMW520-R2210,  software & bootrom and updated my test(spare) switch

– BUT the dhcp relay hand disable command is not available/valid in V5.20R2210 !

Display Version records below.

 

Does this mean the original software error has been corrected in R2210 and the dhcp relay hand disable command is no longer necessary ?

 

Will Bootrom 710 and software H3C S5500EI-CMW520-R2210 ‘cure’ the issue on production switches ?

 

Thanks,  Mac

 

Switch that had the Issue:

[LR_Lcn_Core]disp ver

H3C Comware Platform Software

Comware Software, Version 5.20, Release 2202

Copyright (c) 2004-2010 Hangzhou H3C Tech. Co., Ltd. All rights reserved.

H3C S5500-28C-EI uptime is 0 week, 3 days, 1 hour, 49 minutes

 

H3C S5500-28C-EI with 1 Processor

256M    bytes SDRAM

32768K  bytes Flash Memory

 

Hardware Version is REV.C

CPLD Version is 002

Bootrom Version is 609

[SubSlot 0] 24GE+4SFP Hardware Version is REV.C

 

Test Switch:

[LR_Lcn_CoreCopy]disp ver

H3C Comware Platform Software

Comware Software, Version 5.20, Release 2210

Copyright (c) 2004-2011 Hangzhou H3C Tech. Co., Ltd. All rights reserved.

H3C S5500-28C-EI uptime is 0 week, 0 day, 1 hour, 15 minutes

 

H3C S5500-28C-EI with 1 Processor

256M    bytes SDRAM

32768K  bytes Flash Memory

 

Hardware Version is REV.C

CPLD Version is 002

Bootrom Version is 710

[SubSlot 0] 24GE+4SFP Hardware Version is REV.C

1 REPLY
Fredrik Lönnman
Honored Contributor

Re: S5500G - DHCP Relay stops working and new clients fail to get an IP Address

Hi, just a reply to your confusion about the 3Com/HP software version numbering; the switch you've got is the HP A5500/H3C 5500G/3Com 4800G. The 3Com 5500G was a different switch running comware3 whereas your switch are running comware5. So that support note you found does not apply to your switch.

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CCIE Service Provider
MASE Network Infrastructure [2011]
H3CSE
CCNP R&S