[Rack] Monkeybrains link seems to be dead.

Andy Isaacson adi at hexapodia.org
Sun Jun 20 21:21:00 UTC 2010

> > > As far as monkeybrains goes just power cycled both gorilla and the AP,
> > > no fix. I'd debug this more right now but don't have time.
> >
> > I've asked MB if they know what's up; I'll swing by tomorrow to try and
> > debug from our end.  (First question is, has anybody checked the
> > antenna?)

Monkeybrains saw a bit of packet loss last night at 1:40, but the
link is up.  I checked the radio on the roof; it is present, correctly
installed and aligned, does not seem to have been modified / stolen /
hacked, and has both ethernet and wifi link lights.  Their smokeping
is green, but we still can't pass traffic.

from gorilla I see the following:

gorilla:/root>netstat -rn
uRouting tables

Destination        Gateway            Flags   Refs      Use   Mtu  Prio Iface
default        UGS        0     8560     -     8 sis1
172.30.0/22        link#1             UC         5        0     -     4 sis0
192.168.188/24     link#2             UC         1        0     -     4 sis1      00:15:6d:e5:ba:fa  UHLc       2       47     -     4 sis1

PING ( 56 data bytes
64 bytes from icmp_seq=0 ttl=64 time=2.510 ms
64 bytes from icmp_seq=1 ttl=64 time=1.188 ms
--- ping statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 1.188/1.849/2.510/0.661 ms
traceroute to (, 64 hops max, 40 byte packets
 1 (  1.891 ms  1.691 ms  1.363 ms
 2 (  3002.150 ms !H  3002.216 ms !H  3002.33 ms !H
gorilla:/root>ifconfig sis1
        lladdr 00:00:24:c0:fd:49
        priority: 0
        groups: egress
        media: Ethernet autoselect (100baseTX full-duplex)
        status: active
        inet6 fe80::200:24ff:fec0:fd49%sis1 prefixlen 64 scopeid 0x2
        inet netmask 0xffffff00 broadcast
gorilla:/root>arp -an | grep 192
? ( at 00:15:6d:e5:ba:fa on sis1

That looks to me like it's working correctly and the VLAN is working and
we are getting packets across the wifi link, so I'll forward this info
to MB to verify their end of the config is right.

If someone could verify the VLAN config and check the MACs to make sure
I'm not getting fooled by a too-smart switch, I'd appreciate it.

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