[ietf83-tech] Can't reach routers from ietf-hotel network

[Bill Fenner]

On Wed, Mar 28, 2012 at 7:52 AM, Bjoern A. Zeeb
<bzeeb-lists at lists.zabbadoz.net> wrote:
> On Wed, 28 Mar 2012, Bill Fenner wrote:
>
>> One of the failure modes that I've consistently experienced through
>> the week has returned this morning:
>>
>>
>> dhcp-6704% ping -c 10 130.129.64.1
>> PING 130.129.64.1 (130.129.64.1): 56 data bytes
>>
>> --- 130.129.64.1 ping statistics ---
>> 10 packets transmitted, 0 packets received, 100% packet loss
>> dhcp-6704% ping -c 10 130.129.64.2
>> PING 130.129.64.2 (130.129.64.2): 56 data bytes
>>
>> --- 130.129.64.2 ping statistics ---
>> 10 packets transmitted, 0 packets received, 100% packet loss
>> dhcp-6704% ping -c 10 130.129.64.3
>> PING 130.129.64.3 (130.129.64.3): 56 data bytes
>>
>> --- 130.129.64.3 ping statistics ---
>> 10 packets transmitted, 0 packets received, 100% packet loss
>>
>>
>> I switched to the Concorde wireless and went through the portal and am
>> getting *great* network.
>>
>> netdisco tells me that I am on 10.215.6.56, which is attached to
>> 10.215.7.219 port 15 (sadly, that last bit I had to drag out of the
>> database, since netdisco's device view requires symmetrical CDP to
>> display where an AP is attached and the APs don't do CDP).  I thought
>> maybe the switch's MAC address table was full, or something, but the
>> vlan 2 fdb is way smaller than the vlan 1 fdb.  I don't really have
>> any other brilliant ideas...
>
>
> It is interesting that this is also seen with hotel APs

My sense is that it is a different problem than I see with the IETF
APs. With the IETF APs, often if I ping .2 or .3 then I get
connectivity back, or it's a problem with the card and I have to power
cycle altogether.  Here, if I switch to the Concorde network I get
connectivity.

Also, I've never had problems with my phone with the IETF network, but
I have the same symptom (no connectivity on ietf-hotel, but yes on
concorde) on my phone here.

  Bill