05-11-2009 10:00 AM - edited 03-06-2019 05:39 AM
I have a spaning tree configured on 4 switches that end user are connected to. I have spaning tree enabled, end user are complening of delay of audio coming to the wrk-station , I would like to see if the interfaces are configured for port fast when I do "sho ip int brief" .. there is no indication that in there that will suggest that port is fastport
Thanks
05-11-2009 10:09 AM
You can do:
sh spanning-tree | inc P2p Edge
The results that you get back are the ones that have "spanning-tree portfast" configured on their interfaces.
HTH,
John
05-11-2009 10:13 AM
Jhon,
I put in the command and the result is noting
sw#sh spanning-tree | i P2p edge
sw#
05-11-2009 10:21 AM
Oh, and "edge" has a capital "E"
try again with:
sh spanning-tree | i P2p Edge
You may still not have anything though.
05-11-2009 10:17 AM
Hi:
Depending on the switch you are using, you should be able to see the portfast configuration under each switch port when you do a "sh run".
For example:
interface FastEthernet1/0/25
description VLAN_54_sw_port
switchport
switchport access vlan 54
switchport mode access
no ip address
no mdix auto
spanning-tree portfast
HTH
Victor
05-11-2009 10:20 AM
And as Victor said, you can manually look through all of the interfaces. You may not have it enabled at all on any of the interfaces.
John
05-11-2009 10:34 AM
here is my config
sw#sho int fa0/2
FastEthernet0/2 is up, line protocol is up
Hardware is Fast Ethernet, address is 000b.5f51.fec2 (bia 000b.5f51.fec2)
MTU 1500 bytes, BW 100000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s
input flow-control is off, output flow-control is off
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:01, output hang never
Last clearing of "show interface" counters 10w5d
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 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
22517472 packets input, 339072620 bytes, 0 no buffer
Received 79356 broadcasts, 0 runts, 0 giants, 0 throttles
3 input errors, 3 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
50344603 packets output, 457267010 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 PAUSE output
0 output buffer failures, 0 output buffers swapped out
================================================================
sw#sho spanning-tree active
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 24577
Address 000b.5f51.f0c0
Cost 19
Port 23 (FastEthernet0/23)
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32769 (priority 32768 sys-id-ext 1)
Address 000b.5f51.fec0
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Port ID Designated Port ID
Name Prio.Nbr Cost Sts Cost Bridge ID Prio.Nbr
---------------- -------- --------- --- --------- -------------------- --------
Fa0/1 128.1 19 FWD 19 32769 000b.5f51.fec0 128.1
Fa0/2 128.2 19 FWD 19 32769 000b.5f51.fec0 128.2
Fa0/3 128.3 19 FWD 19 32769 000b.5f51.fec0 128.3
Fa0/4 128.4 19 FWD 19 32769 000b.5f51.fec0 128.4
Fa0/5 128.5 19 FWD 19 32769 000b.5f51.fec0 128.5
Fa0/6 128.6 19 FWD 19 32769 000b.5f51.fec0 128.6
Interface Port ID Designated Port ID
Name Prio.Nbr Cost Sts Cost Bridge ID Prio.Nbr
---------------- -------- --------- --- --------- -------------------- --------
Fa0/7 128.7 19 FWD 19 32769 000b.5f51.fec0 128.7
Fa0/8 128.8 19 FWD 19 32769 000b.5f51.fec0 128.8
Fa0/9 128.9 19 FWD 19 32769 000b.5f51.fec0 128.9
Fa0/10 128.10 19 FWD 19 32769 000b.5f51.fec0 128.10
Fa0/11 128.11 19 FWD 19 32769 000b.5f51.fec0 128.11
Fa0/12 128.12 19 FWD 19 32769 000b.5f51.fec0 128.12
Fa0/13 128.13 19 FWD 19 32769 000b.5f51.fec0 128.13
Fa0/14 128.14 19 FWD 19 32769 000b.5f51.fec0 128.14
Fa0/15 128.15 19 FWD 19 32769 000b.5f51.fec0 128.15
Fa0/16 128.16 19 FWD 19 32769 000b.5f51.fec0 128.16
Fa0/18 128.18 19 FWD 19 32769 000b.5f51.fec0 128.18
Fa0/22 128.22 19 BLK 19 28673 000b.5fae.c080 128.22
Fa0/23 128.23 19 FWD 0 24577 000b.5f51.f0c0 128.23
05-11-2009 10:37 AM
I'm going to "assume" that you don't have spanning-tree disabled on any of these ports. Now back to your original problem of "delay in audio", I highly doubt that would be a problem with spanning-tree to begin with. What are they using for audio? Are these phones, video conferencing devices, soft phones? I could be an issue with QoS.
HTH,
John
05-11-2009 10:46 AM
a call comes to DMX 100 as x25 traffic then it get carry on to voice front node and then get converted to tcp and then gets connected to CISCO as 5350 voice getway the is connected to a LAN switches that all wrkstation are connected too. Hope this helps
Thanks again
05-11-2009 10:38 AM
Try looking at the output of
"sh run interface fa0/2"
and see if has "spanning-tree portfast" in the config.
Jon
05-11-2009 10:41 AM
interface FastEthernet0/2
no ip address
no logging event link-status
spanning-tree portfast
05-11-2009 10:43 AM
Well, there goes my assumption :)
Is this the only port that you are concerned with? If you need to see all, just look through "show run."
HTH,
John
05-11-2009 10:49 AM
John , That means port fast is enabled if I see it on all the interfaces. right ?
Thanks
05-11-2009 10:50 AM
a call comes to DMX 100 as x25 traffic then it get carry on to voice front node and then get converted to tcp and then gets connected to CISCO as 5350 voice getway the is connected to a LAN switches that all wrkstation are connected too. Hope this helps
Thanks again
05-11-2009 10:50 AM
Yes it does.
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