1340 bridges and aligning attenna problems

Unanswered Question
Sep 26th, 2008
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I've been having 2 strange problems and could use some advice.

1. using bridges to connect a small dorm and people are seeing terrible throughput. I'm seeing that the local(on-campus side) ethernet interface is slow when I try to telnet or ping, but then picks up speed after awhile. I'm seeing around 6 Mb difference between switchport and bridge enet interface

2. I seem to remember a way to align 1310 bridges using the lights on the back. I thought you turned on the lights on one end then moved the antenna and the lights allowed you to see when you where centered..Anyone know if this is true and how to do it?


I've gone through the doc, change parms to match what I've read and it's kinda worked. But I'm still seeing slow/fast results from my users.

Any thought?

Jeff

Switch interface:::


FastEthernet0/46 is up, line protocol is up (connected)

Hardware is Fast Ethernet, address is 000b.be1a.52ae (bia 000b.be1a.52ae)

Description: Hopkins House-AP 1300 Bridge

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 42/255, rxload 1/255

Encapsulation ARPA, loopback not set

Keepalive set (10 sec)

Full-duplex, 100Mb/s, media type is 10/100BaseTX

input flow-control is off, output flow-control is unsupported

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:01, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 50000 bits/sec, 55 packets/sec

5 minute output rate 16703000 bits/sec, 1981 packets/sec

39144202 packets input, 3368944449 bytes, 0 no buffer

Received 448923 broadcasts (0 multicast)

0 runts, 0 giants, 0 throttles

0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

0 watchdog, 221481 multicast, 0 pause input

0 input packets with dribble condition detected

1581898558 packets output, 1595960649 bytes, 91002 underruns

0 output errors, 0 collisions, 1 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier, 0 PAUSE output

91002 output buffer failures, 0 output buffers swapped out



1310 Bridge interface::::


FastEthernet0 is up, line protocol is up

Hardware is PowerPCElvis Ethernet, address is 0021.55cc.6e86 (bia 0021.55cc.6e

86)

MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

reliability 255/255, txload 1/255, rxload 32/255

Encapsulation ARPA, loopback not set

Full-duplex, 100Mb/s, MII

ARP type: ARPA, ARP Timeout 04:00:00

Last input 00:00:00, output 00:00:00, output hang never

Last clearing of "show interface" counters never

Input queue: 0/80/0/0 (size/max/drops/flushes); Total output drops: 0

Queueing strategy: fifo

Output queue: 0/40 (size/max)

5 minute input rate 12697000 bits/sec, 1573 packets/sec

5 minute output rate 42000 bits/sec, 50 packets/sec

326546948 packets input, 3462240750 bytes

Received 22242773 broadcasts, 0 runts, 0 giants, 181491611 throttles

8 input errors, 0 CRC, 0 frame, 0 overrun, 181311949 ignored

0 watchdog

0 input packets with dribble condition detected

10757325 packets output, 926078836 bytes, 0 underruns

0 output errors, 0 collisions, 22 interface resets

0 babbles, 0 late collision, 0 deferred

0 lost carrier, 0 no carrier

0 output buffer failures, 0 output buffers swapped out




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carlosmadriz Fri, 09/26/2008 - 12:25
User Badges:

about the second issue:


It's true, what you need is to configure the "station-role..." for the interface dot 0 to "...install (automatic/root/non-root).


If you choose automatic, the bridge will create a SSID named install (or something like that) and it will act as a non-root bridge for the first 30 secs. if it doesn't find a root, the bridge will turn into one.


I recommend you to use root or non-root configs, the bridge will create a new SSID named tsunami)


here's a link about how to use the install mode:


http://www.cisco.com/en/US/docs/wireless/access_point/1300/ios/mounting/installation/guide/mnt1300.html#wp36737

(search for "Table 4 Install Mode RSSI Display")


good luck with that!


By the way, I'm also having throughput problems. Regular web browsing doesn't affect the wireless link, but downloads slows the link, and I got no idea why. Our wireless link has a BW of 12mbps and our internet conection has only 2mbps, the rxload doesn't even reach 25/255!

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