'show interface trunk' output

My question is..
interface Gi0/1 on access switch (Switch A) configured as trunk port allowing multiple vlans (say vlan 100-105)
Now, this interface Gi0/1 on switch A has no issues and configured fine.
Another switch B connected to Switch A and working fine. both sw A & sw B up and working fine
But, switch B is now say disconnected from Switch A which causes the interface Gi0/1 on SW A go down.
when I do a "show interface trunk" on Switch A, will the output show trunked vlans 100-105 or the output will not show the trunked vlans as the interface on Switch A is down because the Switch B is disconnected???
Basically, all I want to know is when an interface configured for trunking multiple vlans go down will the "show interface trunk" command list those vlans 100-105 in the output ???
Thanks for looking into my q

When the link is down, you will get a "blank" output to the command "sh interface trunk".

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David

David;
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Please advise.

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Show Interfaces Output Errors / CRC (Frame Relay)

Hi All,
Looking at an Output of a show interfaces command there seems to be a high volume of Input errors - and they almost tally up with CRC on the line below. The line is heavily saturated - would this be the cause? Or could the CRC be causing an issue? It is a frame relay link (512K)
Serial0/1/0 is up, line protocol is up
  Hardware is GT96K Serial
MTU 1500 bytes, BW 512 Kbit/sec, DLY 20000 usec,
     reliability 255/255, txload 31/255, rxload 250/255
Encapsulation FRAME-RELAY, loopback not set
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Restart-Delay is 0 secs
LMI enq sent 110367, LMI stat recvd 110110, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 1023 LMI type is CISCO frame relay DTE
FR SVC disabled, LAPF state down
Broadcast queue 0/64, broadcasts sent/dropped 18837/3, interface broadcasts 0
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1w5d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 7976
Queueing strategy: weighted fair
Output queue: 0/1000/64/0 (size/max total/threshold/drops)
     Conversations 0/8/256 (active/max active/max total)
     Reserved Conversations 0/0 (allocated/max allocated)
     Available Bandwidth 384 kilobits/sec
30 second input rate 502000 bits/sec, 62 packets/sec
30 second output rate 64000 bits/sec, 64 packets/sec
     74014842 packets input, 2195212513 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 101 giants, 0 throttles
     12589993 input errors, 12589924 CRC, 2758329 frame, 246617 overrun, 0 ignored, 3630022 abort
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     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out
     108498 carrier transitions
     DCD=up DSR=up DTR=up RTS=up CTS=up

Get the ISP to run a 4-hour Bit Error Rate test (aka BER test).

Show interface - received broadcast - counter - Vlan - L2 mcast

HI All,
I have a situation where the Show interface on 7609 displays broadcast counters. I did capture wireshark but did not see any broadcast. Wireshark broadcast for 1 minute shows 20 broadcast packets where as Vlan interface shows increase at rate of 1000 per minute.
L2 Switched: ucast: 8529 pkt, 896149 bytes - mcast: 35427 pkt, 2338134 bytes
L3 in Switched: ucast: 0 pkt, 0 bytes - mcast: 0 pkt, 0 bytes mcast
L3 out Switched: ucast: 0 pkt, 0 bytes mcast: 0 pkt, 0 bytes
40978 packets input, 2996897 bytes, 0 no buffer
Received 35607 broadcasts (0 IP multicasts)
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Is it likely that the received broadcast also includes the HSRP hello packets destined for 224.0.0.2? but it does shows(0 IP multicast).
Can someone please confirm that the received broadcast counter includes multicast HSRP packets or is it just a coincidence. But again on wireshark I dont see 1000 broadcast packets only HSRP packets in addition to unicast traffic.
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Thanks
M

Found the answer.
Anatomy of RX packet counters on a Cisco Nexus 5548:
Nexus5548# show int eth1/29
RX
6387682660 unicast packets 1495485 multicast packets 164 broadcast packets
6389178309 input packets 589693485138 bytes
5146969 jumbo packets 0 storm suppression bytes
* "input" = unicast + multicast + broadcast (all non-jumbo)
* "jumbo" = frames sized 1519 bytes to the MTU bytes defined on the interface
* "jumbo" frames are counted separately from non-jumbo ("input")
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one "jumbo" counter)
This can be seen another way with the 'count detail' command, correlated to "show int" output:
Nexus5548# show int eth1/29 count detailed
Ethernet1/29
Rx Packets: 6389178309 <-- input
Rx Unicast Packets: 6387682660 <-- unicast
Rx Multicast Packets: 1495485 <-- multicast
Rx Broadcast Packets: 164 <-- broadcast
Rx Jumbo Packets: 5146969 <-- jumbo
Rx Bytes: 589693485138
Rx Packets from 0 to 64 bytes: 1059418 <-- non-jumbo start
Rx Packets from 65 to 127 bytes: 6072007478 +
Rx Packets from 128 to 255 bytes: 11055520 +
Rx Packets from 256 to 511 bytes: 287107435 +
Rx Packets from 512 to 1023 bytes: 12801466 +
Rx Packets from 1024 to 1518 bytes: 23 <-- non-jumbo end
Rx Trunk Packets: 6387682823 <-- unicast + broadcast
fyi.

UBLR dosen´t work in an interfaces trunk?

I´m configuring Aggregate policer in a Sup720-3B, I need to configure Aggregate Policer in a Trunk interfaces, It´s required to limit the bandwidth for vlan to L2 through an interface trunk, between two catalyst. But it´s dosen´t work. The configuration that I am using is:
S6509#run int giga 3/2
Building configuration...
Current configuration : 167 bytes
interface GigabitEthernet3/2
switchport
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
service-policy input LIMIT
end
S6509#
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Extended IP access list TRAFFIC
10 permit ip any any
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Class Map match-all Daniel (id 1)
Match access-group name TRAFFIC
S6509#
S6509#
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S6509#show policy-map
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police flow mask src-only 2000000 200000 conform-action transmit exceed-action drop
S6509#
S6509#
hostname S6509
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logging rate-limit all 1000
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match access-group name TRAFFIC
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class Daniel
police flow mask src-only 2000000 200000 conform-action transmit exceed-action drop
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QoS is enabled globally
Policy marking depends on port_trust
QoS ip packet dscp rewrite enabled globally
Input mode for GRE Tunnel is Pipe mode
Input mode for MPLS is Pipe mode
QoS Trust state is DSCP on the following interface
Gi3/4
Vlan or Portchannel(Multi-Earl) policies supported: Yes
Egress policies supported: Yes
----- Module [5] -----
QoS global counters:
Total packets: 233
IP shortcut packets: 0
Packets dropped by policing: 0
IP packets with TOS changed by policing: 0
IP packets with COS changed by policing: 0
Non-IP packets with COS changed by policing: 0
MPLS packets with EXP changed by policing: 0
S6509#
S6509#
S6509#show policy-map interface gigabitEthernet 3/2
GigabitEthernet3/2
Service-policy input: LIMIT
Class-map: Daniel (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: access-group name TRAFFIC
Class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any
S6509#

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Doubt about infos of show interface

Hi, folks!
Someone could explain or send me a link of Cisco paper which explain the informations get by show interfaces?
I would like to know about:
runts, giants, throttles,frame, overrun, ignored, watchdog, multicast,
input packets with dribble condition detected, underruns, interface resets,
babbles, late collision, deferred, output buffer failures,
output buffers swapped out?
What does that things means?
Some fasteth in our switches has "ignored", but ignored what?
thanks,
Renato

Hi Renato,
Here you go. This link will explain you each and everything.
http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00800a7af0.shtml
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Is the "show interface brief" command 100% safe?

I am planning on performing a health check on multiple Cisco SAN switches. This check will be performed five or more times a day. I know that the "show" commands are usually safe commands, but I have seen instances where "show tech-support" has caused the supervisor to restart. This type of outage is not acceptable.
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3) What kind of CPU usage does "show interface brief" have on a SAN switch?
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Show interfaces Gi3/1

When requesting "show interfaces Gi3/1" on my MLS i get the following output:
GigabitEthernet3/1 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 000f.f89b.4c0a (bia 000f.f89b.4c0a)
Internet address is 192.168.220.89/29
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)
Full-duplex, 1000Mb/s, media type is LH
input flow-control is off, output flow-control is on
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:01, output hang never
Last clearing of "show interface" counters 22w3d
Input queue: 0/75/0/768 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
Does the Queueing strategy as well as the Output Queue refer to the "Software Queue" or "Hardware Queue"???

With QoS disabled you basically have a FIFO queue that is tail dropping all traffic it does not have buffer space for. If you run out of buffer spaces on a non-virtual interface, they will appear as output drops.
show interface | i drops|line
With QoS enabled you can actually look into drops per hardware queue with:
'show queueing interface gx/y'
6500 is a hardware forwarding platform, packets are switched too fast to be able to monitor queue fullness, which is why you will almost always see 0/2000/0/0 (on a L2 interface) where the first 0 is packets in queue. So drops is really the only indication of congestion.

Show Interface Input Errors

When doing a show inteface - What do Input Errors indicate?

Ankur,
Here is the output from show int ...The only thing incrementing is the input errors but what type of problem does that indicate?
JSC-1#sh int gigabitEthernet 11/1
GigabitEthernet11/1 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0012.0092.a260 (bia 0012.0092.a260
Description: GL1
MTU 1500 bytes, BW 100000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Full-duplex, 100Mb/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 00:00:35, output hang never
Last clearing of "show interface" counters 1d03h
Input queue: 0/2000/41/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 645000 bits/sec, 66 packets/sec
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1152632 packets input, 910547914 bytes, 0 no buffer
Received 2068 broadcasts (1650 multicast)
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41 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
1917609 packets output, 964325920 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

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Whenever I start the MSI video program - the program at the top of the MSI main panel interface (see the bottom of this page for a screenshot) - I get the following two errors one after another:
Cannot render audo renderer (5001)...
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TV@nywhere Plus
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IBM ThinkCentre
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Quote from: Stu on 23-June-09, 01:32:15
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http://amcap.en.softonic.com/
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Show sysinfo command output

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(WC01) >show sysinfo
Manufacturer's Name.............................. Cisco Systems Inc.
Product Name..................................... Cisco Controller
Product Version.................................. 7.4.111.5
Bootloader Version............................... 1.0.16
Field Recovery Image Version..................... 7.0.112.21
Firmware Version................................. FPGA 1.7, Env 1.8, USB console 2.2
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System Contact................................... ICT
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System Timezone Location......................... (GMT+10:00) Sydney, Melbourne, Canberra
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System Stats Normal Interval..................... 180
Configured Country............................... AU - Australia
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Internal Temperature............................. +30 C
External Temperature............................. +18 C
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State of 802.11a Network......................... Enabled
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Number of Active Clients......................... 116
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Memory Average Usage............................. Unknown
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Power Supply 2................................... Present, OK
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HTH
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**** Pls rate all useful responses ****

'show interface trunk' output

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