Cisco 4507 Catalyst switch goes down
Hi,
We have cisco 4507 catalyst switch in which end users are connected. today this catalyst switch goes down , i checked the input power was normal but the Switch is not running. All the notification lights like supervisior engine and Fan status lights are showing in RED colur . So i switched off the SMPS and wait for some time and i switched ON , the switch starts running and in 3-4 minutes it again goes down.
Thanks and Best Regards,
Get on the console port and watch it while it is booting up. It will usually tell you why it is failing in the logs or messages as it is booting up .
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switch: flash_init
Initializing Flash...
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I am facing a wierd issue with one of the line card in the Cisco 6513 switch. All the servers, desktops and trunks connected to this line card are showing high response time (>500ms) locally. But those IP phones connected to the same line card is working fine and the repsonse time is always 1ms. I am unable to find any root cause as i am not seeing any errors or logs, please help me to fidn the root cause.
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No errors for the following commands.
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Cisco Internetwork Operating System Software IOS (tm) s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(18)SXF11, RELEASE SOFTWARE (fc1)
Compiled Fri 14-Sep-07 21:50 by kellythw
Image text-base: 0x40101040, data-base: 0x42DB89D0
ROM: System Bootstrap, Version 12.2(17r)SX5, RELEASE SOFTWARE (fc1)
BOOTLDR: s72033_rp Software (s72033_rp-IPSERVICESK9_WAN-M), Version 12.2(18)SXF11, RELEASE SOFTWARE (fc1)
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System returned to ROM by reload at 04:33:29 UTC Fri Feb 22 2013 (SP by reload)
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8192K bytes of packet buffer memory.
65536K bytes of Flash internal SIMM (Sector size 512K).
Configuration register is 0x2102What supervisor are you running ?
Be aware that the 6548 module is quite heavily oversubscribed and you could be running into this ie. servers will definitely be sending a lot more data than an IP phone.
The 6548 has an 8Gbps connection the switch fabric (note this is assuming a sup 720). So you have 48 1Gbps ports going in (in = from end devices) and only 8Gbps going out (out = to the switch fabric). Each group of 6 ports shares a 1Gbps connection the switch fabric. So lets says on one of those groupings you had 6 servers with 1Gbps connections. If only three of these servers were sending out 400Mbps of data each you have contention because 3 x 400Mbps = 1.2Gbps and you only have 1Gbps to the switch fabric.
If this is the problem there are a couple of solutions -
1) you can look into how the devices are spread across the port groupings and maybe you could move things around to make the traffic more even among port groupings. However you mention servers and trunks so you could just end up with the same problem but also the phones are not working either.
2) you can look to migrate some connections off that module onto another but this supposes you have spare capacity elsewhere. If those trunk links are connected to other switches then you would defintely want to look into moving these as the 6548 was never intended to be used as an uplink module between switches.
3) you could upgrade the module to something like a 6748 (or whatever the latest is as they keep introducing new ones) which has a much better connection to the switch fabric. Again this assumes a sup720 as the 6748 would't work with a sup32.
However don't just rush into 3) without first doing some investigation work eg. what do the servers do, how much traffic are they churning out etc. Have you looked at the interface stats for each connection to see if you are getting drops etc ?
Jon -
Cisco 6500 Catalyst switch has reset/rebooted on its own
We expereinced one of our backbone catalyst 6500 switch got reloaded on its own.no particular information in the log.The software version is 6.3 (5)
Is there any chance one port/server NIC can make whole switch to go down.Atleast in this crash, it cannot be rootc aused since there is no stack info. But we had few bugs due to which stack would not be written to sh log output. So if you are confident that there were no power/UPS issues, you might want to consider upgrading to general deployment release 7.6(17)
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Thank youHi,
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Cisco IOS Software, C3900 Software (C3900-UNIVERSALK9-M), Version 15.1(2)T4.1, MAINTENANCE INTERIM SOFTWARE
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2011 by Cisco Systems, Inc.
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card type e3 1
interface ATM1/0
description Link to PE
mtu 1500
bandwidth 34010
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ip virtual-reassembly in
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oam retry 3 5 1
oam ais-rdi 15 3
encapsulation aal5snap
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queue-depth 5 3
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HTH
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Hi,
i am karthik.
we are going to build the nexus 9508 with NX-OS in our data center. in existing we are having 50's of catalyst L2 and L3 switches.
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Hi,
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2. Is there specific interval that I need to wait before issuing snmp polling to the switch after the LAN port turned into green?1. Depends on the Switch/Supervisor you have. For example Sup1/2 in a CAT6500 can have upto 128k MAC addresses
http://www.cisco.com/warp/public/765/tools/quickreference/catalyst6000supervisors.pdf
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http://www.cisco.com/warp/public/765/tools/quickreference/catalyst4000supervisors.pdf
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http://www.cisco.com/warp/public/765/tools/quickreference/catalyst3x00.pdf
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Cisco 4507 Switch - Clients are unable to renew the IP Address
Hello .
i have cisco 4505 core switch with different DCHP pool bind with different Vlan
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please Advice .Hello Leo ,
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10.1.X.24 0100.1ec9.782d.b0 Infinite Manual
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10.1.X.27 0100.1aa0.7872.71 Infinite Manual
10.1.X.30 0118.0373.2957.d4 Infinite Manual
10.1.X.31 01b8.ac6f.a4d2.03 Infinite Manual
10.1.X.32 0100.2170.407c.96 Infinite Manual
10.1.X.33 0100.1ec9.6ba3.d5 Infinite Manual
10.1.X.34 0100.2170.407b.c2 Infinite Manual
10.1.X.35 0100.1ec9.782a.11 Infinite Manual
10.1.X.36 0100.1ec9.6c31.32 Infinite Manual
10.1.X.37 0100.26b9.c283.09 Infinite Manual
10.1.X.38 0100.2170.407c.59 Infinite Manual
10.1.X.39 0100.2170.407c.74 Infinite Manual
10.1.X.40 0100.1ec9.6c33.2c Infinite Manual
10.1.X.41 0100.1aa0.6f1f.6d Infinite Manual
10.1.X.42 0100.1ec9.6b9e.d8 Infinite Manual
10.1.X.43 0100.1ec9.6a8b.cf Infinite Manual
10.1.X.44 0100.1ec9.782c.f3 Infinite Manual
10.1.X.45 0100.2170.4074.cf Infinite Manual
10.1.X.46 0100.1ec9.6c38.38 Infinite Manual
10.1.X.47 0100.1ec9.782c.5b Infinite Manual
10.1.X.48 0100.2170.4077.06 Infinite Manual
10.1.X.49 0184.2b2b.ae10.f0 Infinite Manual
10.1.X.50 0100.2170.407c.e6 Infinite Manual
10.1.X.51 0100.1e4f.4f31.14 Infinite Manual
10.1.X.56 0100.1ec9.783e.b1 Infinite Manual
10.1.X.57 01b8.ca3a.a2d3.b0 Infinite Manual
10.1.X.59 019c.934e.1811.d8 Infinite Manual
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10.1.X.98 0014.38e1.c9a0 Infinite Manual
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10.1.X.204 0100.1ec9.7829.5e Mar 17 2014 10:10 PM Automatic
10.1.X.205 0100.1ec9.77ea.a7 Mar 17 2014 11:46 PM Automatic
10.1.X.206 0184.2b2b.adfc.c1 Mar 17 2014 10:47 PM Automatic
10.1.X.207 01a4.badb.f89e.90 Mar 17 2014 11:39 PM Automatic
10.1.X.208 0100.1aa0.6f31.6c Mar 18 2014 01:01 AM Automatic
10.1.X.242 0108.0037.8c00.ea Infinite Manual
10.1.X.243 0000.aac1.636f Infinite Manual
10.1.X.244 0800.379b.21f0 Infinite Manual
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10.1.H.206 0100.2584.186f.32 Mar 18 2014 10:29 AM Automatic
ip dhcp excluded-address 10.1.X.1 10.1.X.63
ip dhcp excluded-address 10.1.X.240 10.1.X.254
ip dhcp excluded-address 10.1.X.242
ip dhcp excluded-address 10.1.X.243
ip dhcp excluded-address 10.1.X.244
ip dhcp excluded-address 10.1.X.130
ip dhcp pool floor2_users
network 10.1.X.0 255.255.255.0
default-router 10.1.X.1
dns-server 10.9.57.21 10.8.57.22
domain-name corp.ank.ad
lease 0 12
interface VlanX
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We have a 1200 Aironet just go down hard for no reason through out the day, we replaced the Power Injector with a C2960 POE Switch, we also replaced the cabiling. When it goes down hard all three lights are still green as if the AP is still up. We verified the IOS with other stores and everything is the same on the configurations, versions, and IOS.
Can anyone give us a suggestion on what the issue or something else we can look at that we might be over looking?
Couple more things that we have done:
We verified the IOS with other stores and everything is the same on the configurations, versions, and IOS.
Thanks in advance......Hello John,
As per your query i can suggest you the following solution-
Please check the POE for the AP and whether it is proper or not.
Types of Power over Ethernet
This section describes various types of Power over Ethernet (PoE) including Cisco pre-standard power, IEEE 802.3af power, and IEEE 802.3at power.
Cisco Pre-Standard Power
The first generation of Cisco pre-standard PoE was designed to power devices such as Cisco IP phones and access points. This pre-standard solution had relatively low power requirements (approximately 6 to 7 watts). Later generations of pre-standard power supported higher power modes (up to 15 Watts) and added power negotiation via Cisco Discovery Protocol (CDP). In July 2003, the IEEE ratified the 802.1af standard (up to 15.4 watts of power). With the ratification of IEEE 802.3af, Cisco supports both IEEE 802.3af and Cisco pre-standard PoE concurrently. Cisco has also extended pre-standard power management using CDP negotiation to Cisco IEEE 802.3af compliant devices to further optimize Power Source Equipment (PSE) power management.
When using a Cisco pre-standard source for power, it is important to check the power draw in watts (Table 1) and verify that the PSE can supply enough wattage to the powered device. Depending on the version of your PSE, enough power may not be available to supply some of the newer access points.
IEEE 802.3af Power
The IEEE 802.af-2003 PoE standard:
•Defines terminology to describe a port that acts as a power source to a powered device.
•Defines how a powered device is detected.
•Defines two methods of delivering PoE to the discovered device requiring power.
•End-Point PSE—PoE-capable Ethernet port. Power may be delivered by an end-point PSE to a powered device using the active data wires of an Ethernet port or the spare wires. An end-point PSE, such as a PoE-capable Ethernet switch may implement either scheme.
•Mid-span PSE—Can be used to deliver PoE if an existing non-PoE-capable Ethernet switch is used. If a mid-span PSE is used, it can only implement power delivery over the spare pairs of the copper cabling and cannot be used to deliver PoE over 1000BASE-T connections.
Hope this will help you.
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