[nsp] 802.3x flow control in Catalyst 3550

Voll, Scott Scott.Voll at wesd.org
Mon Mar 3 09:22:46 EST 2003

Is the Gbic working at all?  What kind of Gbic do you have?  Is it

I have a 3550 and Asante Gbics don't work in ours.  Our Cisco Engineer
said that Cisco is writing into their code to only use Cisco Cert.

Don't know if that is your problem..... But I thought I would through it
out there.


Scott Voll
Network Analyst, CCNA 
Willamette ESD
scott.voll at wesd.org

-----Original Message-----
From: Jonas Stenling [mailto:jonas at stenling.nu] 
Sent: Monday, March 03, 2003 8:27 AM
To: cisco-nsp at puck.nether.net
Subject: [nsp] 802.3x flow control in Catalyst 3550

I'm wondering how one should decipher the following command output:

GigabitEthernet0/4 is up, line protocol is up
  Hardware is Gigabit Ethernet, address is 000b.5f7a.0b84 (bia
  Description: RTR1
  MTU 1530 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)
  Full-duplex mode, link type is force-up, media type is SX
  output flow-control is unsupported, input flow-control is unsupported,
  input flow-control is on, output flow-control is on

send/receive flow control is enabled on this port. What is the
"flow-control is unsupported" stuff about? Is the second line the
negotiated parameters?


Visit: http://www.stenling.nu/contact.html for contact info. EOF

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