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Request Time Out - While tracert from outside of the N/W.

woodstreet
Occasional Advisor

Request Time Out - While tracert from outside of the N/W.

Hi All

 

I have hp 5500 switch,while making tracert from outside network to my local network.every tracert responce is coming.But when it reaches to my switch its shows "requtest time out", but it reaches to distination.

 

Kindly help me out.

 

Thanks in advance.

 

Regards

Woodstreet

10 REPLIES
Apachez-
Trusted Contributor

Re: Request Time Out - While tracert from outside of the N/W.

Thankfully HP has started to use healthier, securitywise (compared to their competitors), default values meaning you dont need to manually disable stuff - you must manually enable stuff instead.

 

One such thing is how the device behaves regarding various ICMP-based traffic.

 

In your case you need to enable this option in the configuration if you want your device to start to show up in your traceroutes:

 

 ip ttl-expires enable

woodstreet
Occasional Advisor

Re: Request Time Out - While tracert from outside of the N/W.

 

thanks for the reply

 

the case :--as we know ICMP is disable by default, so i enable ip ttl-expires .Ya after that i am getting tracert information of each hop.

 

But a new senerio :--

 

say  i am having office at terkey and one more office at india,when i do tracert from terkey to india. I am getting get hop,but when its hit my HP switch its shows Request time out.

 

Kindly suggest

 

Thanks in advance

Apachez-
Trusted Contributor

Re: Request Time Out - While tracert from outside of the N/W.

Sorry I dont understand your question, could you rephrase please?

woodstreet
Occasional Advisor

Re: Request Time Out - While tracert from outside of the N/W.

 

 

Please find Image attached

network looks like

firewall--------gatway-192.168.100.254
|
hp l3 switch----gatway-192.168.100.240
|
l2 switch
|
users

if it do tracert 8.8.8.8 it will hit
1. vlan gatway
2. firewall
3.then out side world

but when i do tracert from other location to my present location, when its hit my l3 switch
its shows request time out.

manuel.bitzi
Trusted Contributor

Re: Request Time Out - While tracert from outside of the N/W.

Have u enabled "ip ttl-expire enable" on your switch?

 

 

br

Manuel

H3CSE, MASE Network Infrastructure [2011], Switzerland
woodstreet
Occasional Advisor

Re: Request Time Out - While tracert from outside of the N/W.

Ya ttl-expire already enabled.

Apachez-
Trusted Contributor

Re: Request Time Out - While tracert from outside of the N/W.

Then what about ACLs on this switch?

 

Any that blocks icmp of some type or such?

Vince-Whirlwind
Honored Contributor

Re: Request Time Out - While tracert from outside of the N/W.

What IP address is your switch using to respond to the ICMP packet?

Is that IP address routable? is it NATd?

woodstreet
Occasional Advisor

Re: Request Time Out - While tracert from outside of the N/W.

At my Hp switch

 

static-route 0.0.0.0 0.0.0.0 192.168.100.240---static route enable to hit the packert to firewall to reach internet.

 

nating is done at firewall.

Apachez-
Trusted Contributor

Re: Request Time Out - While tracert from outside of the N/W.

So what is your firewall dropping then?