From: Gary Bartlett (ciscokid@sympatico.ca)
Date: Fri Sep 05 2003 - 02:50:26 GMT-3
Thanks for getting back to me,
this type of HW is new to me, I looked up GBIC to try to get a better
idea of what you are talking about. I didn't play any role in the HW
setup. I did see what you mean by clustering the switches. But it also
gave mention to the below:
!
Full-Duplex Configuration Options
Customers can also use the GigaStack GBIC to create a low-cost dedicated
Gigabit Ethernet connection between two stack members, providing a
scalability option to increase overall stack bandwidth. When connecting
two GigaStack GBICs with a single cable, the GBIC will autonegotiate to
full-duplex and provide a 1-Gbps forwarding rate in each direction-or 2
Gbps.
!
So the above is what I'd like to do, I gust have the 2 switches
connected together (2 cables between the two). So there are 2 wires
connected between the 2 switches, It is represented by only 1 interface.
From what I can tell my problem lies in the fact that C3550-24 seams to
think the 2nd cable is a redundant link
GigaStack module(0.2) in GBIC slot. link1 is up, link2 is redundant link
But on the C3524-XL seams to recognize both links
GigaStack module(0.2) in GBIC slot. link1 is up, link2 is up
So I believe it is possible to set this up in a full-duplex manner any
insight you could give me would be appreciated
Thanks
Gary
-----Original Message-----
From: Snow, Tim [mailto:timothy.snow@eds.com]
Sent: Friday, September 05, 2003 12:51 AM
To: 'Gary Bartlett'
Cc: 'ccielab@groupstudy.com'
Subject: RE: duplexing problem
Why do you have a gigastack GBIC install in there? Try a SX GBIC. I
think
the only GBIC that does half duplex is those gigastack gbics and they're
meant for clustering switches.
Tim
-----Original Message-----
From: Gary Bartlett [mailto:ciscokid@sympatico.ca]
Sent: Thursday, September 04, 2003 11:44 PM
To: ccielab@groupstudy.com
Subject: duplexing problem
Hi Group,
I am having problems getting a link between a C3524-XL & a C3550-24 to
operate at full duplex, I've heard mention that I might have to do
something with flow control & load-interval. Any help would be
appreciated.
P.S. I was able to set the duplexing on int g0/2 on the C3524-XL, but
I'm not sure how to change the duplexing on the 3550 G0/1 even thow it
shows it is capable of doing so
C3550-24
interface GigabitEthernet0/1
description connection to sherweb306
switchport trunk encapsulation isl
switchport mode trunk
switchport block multicast
no ip address
end
C3550-24#sh interfaces g0/1
GigabitEthernet0/1 is up, line protocol is up
Hardware is Gigabit Ethernet, address is 000b.fdcb.3a99 (bia
000b.fdcb.3a99)
Description: connection to sherweb306
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Half-duplex, 1000Mb/s, link type is autonegotiation, media type is CX
Gigstack
output flow-control is off, input flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
GigaStack module(0.2) in GBIC slot. link1 is up, link2 is redundant
link
Last input 00:00:00, output 00:00:08, 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 1601000 bits/sec, 375 packets/sec
5 minute output rate 1751000 bits/sec, 231 packets/sec
3295801733 packets input, 3629361707 bytes, 0 no buffer
Received 244602658 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 13031224 multicast, 0 pause input
0 input packets with dribble condition detected
3079024657 packets output, 977312062 bytes, 0 underruns
0 output errors, 5716584 collisions, 1 interface resets
0 babbles, 0 late collision, 36806352 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
C3550-24#sh interfaces g0/1 capabilities
GigabitEthernet0/1
Model: WS-C3550-24
Type: 1000BaseCX Gigastack
Speed: 1000
Duplex: full
Trunk encap. type: 802.1Q,ISL
Trunk mode: on,off,desirable,nonegotiate
Channel: yes
Broadcast suppression: percentage(0-100)
Flowcontrol: rx-(off,on,desired),tx-(off,on,desired)
Fast Start: yes
QOS scheduling: rx-(1q0t),tx-(4q2t),tx-(1p3q2t)
CoS rewrite: yes
ToS rewrite: yes
UDLD: yes
Inline power: no
SPAN: source/destination
PortSecure: yes
Dot1x: yes
------------------------------------------------------------------------
---------------------------------
C3524-XL
interface GigabitEthernet0/2
switchport mode trunk
end
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