06-27-2007 05:19 PM - edited 03-05-2019 05:00 PM
Hi Guys,
I'm new here, and have a question to get things rolling:
I recently setup a new user and managment vlan on my network which has been up until this point running all on vlan 1. The problem is I cannot download data at over 9mB/sec from an end device, uploading on this vlan is fine, up to 30mB/sec. At first I thought it was a limitation of a new 3750 I was using (maybe fiber issue), but after configuring a gigabit port directly on our 6509 core to this new vlan the same issue exists. I will note that devices on vlan 1 do not have this problem. I am kind of stumped here, the ports are connected at full duplex gig. The following is my vlan configuration on the 6509 core switch ( I have removed addressing from my paste, sorry) and a trunk port used for my access switch. Any help or direction is appreciated:
vlan 500
name Managment-Test
!
vlan 503
name User-Test
interface Vlan500
description Managment - Test
ip address *.*.*.78 255.255.255.240
no ip redirects
no ip proxy-arp
load-interval 30
!
interface Vlan503
description Access -Test
ip address *.*.*.254 255.255.255.0
ip helper-address *.*.*.*
no ip proxy-arp
load-interval 30
nterface GigabitEthernet7/22
no ip address
load-interval 30
udld port aggressive
switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 500
switchport trunk allowed vlan 1,500,503
switchport mode trunk
storm-control broadcast level 10.00
07-02-2007 04:51 PM
Any ideas here guys?
07-03-2007 05:19 AM
Can you remove the storm-control on the trunk port and try again ?
07-03-2007 05:38 AM
What are the 2 hosts you are trying to upload / download btwn connected to? Are they both connected directly to the 6509? Please do a "sh interface x/x" for the two hosts and post that info.
Jay Killion, CCIE #17873
07-03-2007 06:22 AM
Okay, to make this easier I put a port directly on the core into this new vlan i'm having troubles with (to rule out a configuration problem on my access switch/physical connection problem). The same problems exsists, i'm downloading/uploading from a laptop to a file server, both are connected to the core. My laptop is on the new vlan (503), and the fileserver is on vlan 1.
There is no problem if I connect my end device to a port thats on vlan 1. Also I have tried changing my source server and my laptop to a desktop, same issue.
File Server: Gi6/9 connected 1 a-full a-1000 10/100/1000BaseT
sh run int:
interface GigabitEthernet6/9
no ip address
switchport
end
sh int:
GigabitEthernet6/9 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0015.f9c8.d938 (bia 0015.f9c8.d938)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 3/255, rxload 3/255
Encapsulation ARPA, loopback not set
Full-duplex, 1000Mb/s
input flow-control is off, output flow-control is off
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:58, output hang never
Last clearing of "show interface" counters 3d18h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 12523000 bits/sec, 1765 packets/sec
5 minute output rate 11969000 bits/sec, 1767 packets/sec
1479157389 packets input, 2162879403953 bytes, 0 no buffer
Received 18120 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
543422299 packets output, 70009375192 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Laptop:
sh run int: Gi6/45 connected 503 full 1000 10/100/1000BaseT
nterface GigabitEthernet6/45
no ip address
load-interval 30
speed 1000
duplex full
udld port aggressive
no snmp trap link-status
switchport
switchport access vlan 503
switchport mode access
no cdp enable
spanning-tree portfast
end
sh int:
GigabitEthernet6/45 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0015.f9c8.d95c (bia 0015.f9c8.d95c)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 1000Mb/s
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 6d23h, output hang never
Last clearing of "show interface" counters 3d18h
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
30 second input rate 1296000 bits/sec, 219 packets/sec
30 second output rate 2774000 bits/sec, 284 packets/sec
371026 packets input, 372652101 bytes, 0 no buffer
Received 7 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
374292 packets output, 372852419 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
07-03-2007 06:25 AM
Fun issue ;)
I was expecting to see some sort of duplex mismatch...hmmmmm...Ok, lets narrow down the problem. What happens if you move the server to Vlan 503 w/ the laptop? Do you still have speed issues or is it only inter-vlan transfers?
Jay Killion, CCIE #17873
07-03-2007 06:36 AM
Unfortunately I can't disconnect the file server, its in production.
I just added another desktop to this vlan on the core, transfers seem fine on the same vlan, 35mB/s.
....this one has me stumped
07-03-2007 06:44 AM
Ok, next test. Move the desktop over the vlan 1 and try the transfer one more time. After that we'll have a solid baseline to see if it is just intervlan routing that's having a problem.
07-03-2007 06:45 AM
Yup, desktop and laptop on vlan 1 can transfer just fine, 35mB/s both ways..
07-03-2007 06:45 AM
Check for Spanning-Tree, if the STP Root for Vlan 1 is different than the STP Root for Vlan 503, the traffic will traverse the trunk.
I see the trunk has a storm-control value for broadcast, perhaps the download you are performing is seeing as broadcast traffic by the port.
As I suggested before, please remove the storm-control from the trunk and try again.
07-03-2007 06:48 AM
I should have mentioned, I removed the storm control values.
Here is the stp root information:
Root Hello Max Fwd
Vlan Root ID Cost Time Age Dly Root Port
---------------- -------------------- --------- ----- --- --- ------------
VLAN0001 32768 000d.54a9.e960 4 2 20 15 Gi6/48
VLAN0500 32768 0015.c714.35f4 0 2 20 15
VLAN0503 32768 0015.c714.35f7 0 2 20 15
07-03-2007 06:50 AM
As suspected, Vlan1 STP Root is different from STP Root from Vlan 500 and 503.
Vlan1 STP Root is being learned via G6/48.
Can you provide the STP information from that switch ?
You can also alter the STP configuration to mirror Vlan1's.
07-03-2007 06:53 AM
uh oh..
The device plugged into 6/48 is an unmanaged 3com switch (used for test devices in the lab office)....
07-03-2007 06:55 AM
Change the priority for all Vlans to 0 on the 6509. This way, it will become the STP root for all Vlans.
07-03-2007 10:13 AM
Is changing this priority on vlan 1 going to bring the vlan down for a bit, just worried because their is currently about 300 users connected to this vlan....
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