We have Cisco 4948 switches running in production. We want to moniter the trunk link through SNMP.If trunk link fails SNMP need to send notification to server.
View 1 RepliesCurrent Situation:We are able to reach server IP -10.203.206.40 from our 4948 switch vlan 10.30.1.0/24 through the Layer 3 interface between 4506 and 4948.
Requirements
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1) Now we would like to add one more L3 interface between 4506 & 4948 for redundancy purpose.
2) Make available Vlan 540 in 4948 from 4506... need to create two trunk links between 4506 & 4948 and allow vlan 540.
we have multiple Video production networks, with Video servers (AVID Unity ISIS) connected by 10GE fiber links to 4948-10GE switches. On almost every of these switches, I see more or less "Sequence-Err" interface errors. We do not currently have a known problem because this, and no other errors are seen. But I would like to understand the error, and therefore I would like to find out, what a sequence error means, what the cause is, and what the impact (to a frame) is?
By the way, it is well-known that the ISIS Video server does generate very excessive UDP data bursts. Maybe this matters? On Cisco doc I did not find an answer. The document "Troubleshooting Switch Port and Interface Problems" does unfortunately not refer to "sequence-err".
Here is an example output:
WS-C4948-10GE#sh int t1/49
TenGigabitEthernet1/49 is up, line protocol is up (connected)
[code].....
I've been having a debate with a colleague about QOS COS values. My colleague says I need to use COS values across layer 2 trunk links between access layer switches and core switches. My argument is if phones are marking packets with DSCP values I don't need to be concerned with Cos.The reason I ask is we're implementing a new phone system, the ip phones will mark RTP traffic wih dscp value EF and Call signaling with DSCP value of CS3. If my understanding is correct I can trust the dscp values of the phones. We are using Cisco 4507 switches which I believe automatically trust dscp values so I would just need a class-map to match the dscp values and apply the output policy map on the egress interfaces as follows? [code]
View 3 Replies View RelatedIn my core Switch,there are 2 v LAN(V LAN 1 & V LAN 2)my switch is Cisco 4948,so be default ip routing is enable in it. My all servers (DHCP,HTTP,HTTPS) are in v LAN 1 & internet is also in v LAN 1.
My requirement is that v LAN 1 user should not communicate with the v LAN 2 and vice versa. But the v LAN 2 users need an access of all servers and internet which is in v LAN 1. How to configure the access-list. I have try on Packet tracer which i have attached.
note:v LAN 2 user should get the IP from dhcp server which is in vlan1.
I am struggling with a CE520 and its smartports stuff.I have configured the following vlans :
1- data
100 - phones
I need to bring those vlans (both of them) to a Cisco 800 router. The port of the 800 router is already configured as trunk and accepts vlan 1 and 100.The cisco 800 has both vlan 1 and 100 configured with 2 ips on different subnets, and ip routing is enable (to route between two vlans). Also, no access lists are configured.I have configured one port in the switch as role "router" and connected to the router. The other ports are all configured as phone-desktop (phone vlan 100 desktop vlan 1).If I connect a phone and manually configure an ip (the phone gets automatically vlan 100), and try to ping the phone from the router, it doesnt respond. Alse vlan 100 is protocol down.I am guessing what s the right configuration as the link between the switch and the router should be a trunk link for 1 and 100 vlans, but it looks like is transporting only vlan 1.Also changing the port role to "other" when you can specify the native vlan and another vlan, the switch doesnt accept vlan 100 as additional vlan on that link.
A client of ours has installed an SG300-24P switch and would like to setup a LAG between the SG300 and the 3560 switch we manage for them. They would like the LAG to also pass the voice and two data VLANs currently in use; 5, 10, and 100 respectively. I configured the two ports as an Etherchannel with trunking on the logical port, but no luck. I reconfigured as follows:
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode active
end
[code]....
I see no output when I do show lacp nei. At this point the client is looking to use for the configurations to use as he does not know how to setup the SG300 and it is a switch I have never dealt with. I have found some configurations that I believe would allow a single VLAN across, but nothing I believe will allow the LAG to pass all the VLAN's.
Would like to ask whats the correct snmp config so that it will send to our snmp server when a mac flapping occurs on a cisco switch specifically 4507 switches.
View 6 Replies View Related we recently aquired a managed services job and have to do a overhaul of the vlan configs and have a whole dozen WC2948G's trunk between a set of ports as well as trunk out a LAG channel setup to non cisco equipment. the deal is the lacp-channel works properly on both ends but no routing of vlans between ports and between the lag trunk are working.
theres alot of settings in the config and im planning on clearing it and starting from scratch but before i do i want to know where my problem lies.
[code]...
I cannot boot IOS, when i reload this switch it go to ROMMON. I try to uploand IOS but it still has problem. i think i may wrong some point during i did uploand.
This is problem
Switch#sh bootvar
BOOT variable = cat4500-entservicesk9-mz.150-2.SG3.bin,1;bootflash:cat4500-entservicesk9-mz.150-2.SG3.bin,1;bootflash:cat4500-entservicesk9-
[Code].....
My cisco 4948 switch is generating the below error,how do i troubleshoot this error.
*Mar 13 00:09:33.451: %C4K_L2MAN-6-INVALIDSOURCEADDRESSPACKET: (Suppressed 14 times)Packet received with invalid source MAC addre ss (00:00:00:00:00:00) on port Gi1/37 in vlan 1Gi1/37- to this port another 2950 switch is connected by trunk link.and to this switch end host is connected i.e.thin client
MAC Support: 16000
Backplane: 18Gbps
Forward: 28Gbps
VLAN's: 4000 (q-in-q support)
Jumbo Frame Supported
Supported 8000 static routing
!Supporting Stack!
Cisco 4948 supporting stackable? which product do you recommend to these criteria?
I am updating the iOS for a 4948 the bootflash is empty so all i can get into is the rommon. There is no option for x-modem. How can I put the iOS onto this device? [code]
View 2 Replies View RelatedWe had to transport one of our 4948 10 GE to another Data Centre and when we got it there and tried to power up its System Status LED was red and we cannot even get console to the device.
We can try to see if the switch is completely dead and needs replacing or is there something we can do to get it back up and running again?
We purchased two new 4948 with two 10GE uplink ports and upgraded the devices to run IOS 15. My 6506 is running Sup 720 with s77233-adventerprisek0_wan-mz.122-33.SXI9. Currently we have 4948's connected to the same 6506's with no problems. Today I tried to add the new switches with new IOS and it caused of of my 6506 core switches to failover. I can't explain why because it was close to start of business and couldn't do much troubleshooting.
Currently we have four 4948 (running IOS 12.2(14) switches running Layer2 connecting dually to each of the two 6506 cores via 10GE fiber uplinks. I tried to add two more to the scenario, again running layer2 and dual-honing them to each of te 6506 switches. there are two 6506 core switches and they run HSRP and spanning tree is manually set to give priority to even vlans on one 6506 and odds on the other 6506. Also the new switches I tried to add did had rootguard applied as well as the uplinks.
We have to get this working and have no test environment to work with. We need to do this late this evening after close of business.
On another note, I have had problems upgrading some of my older 4948's to IOS 15. I followed Cisco's suggestion and upgraded the EPROM first and then the IOS upgrade took on three of the switches that were ordered rather recently. The four that were ordered in one batch will not take the upgrade even following Cisco's instruction and lots of other tricks. Nothing works. Having problems with IOS 15, in general?
I am planning to upgrade Cisco 4948 IOS upgrade. We have few with older code( 12.2(25)EWA7), when issue sh version shows as Catalyst 4000 L3 Switch Software. while newer version of the switch show as Catalyst 4500 L3 switch.
1 Is this/(sh ver output) just because of the Older code ?
My 2 question is according to release note : [URL]
You need to upgrade your ROMMON before the IOS . 2 What is the approximate time it take to do this ROMMON upgrade ?
I have 4948E module switch at customer site and below is the show version output. Image on the switch is not supporting 'AUTO QoS' as i need to enable Auto Qos on it to prioritize Voice traffic. Which image supports Auto QoS feature . Image should have L3 functionality also i mean it should support Routing protocols. I tried to enable auto QoS using by configuring "QoS' globally but no luck...with existing image.
{ URL}
ROM: 12.2(44r)SG9
Hobgoblin Revision 20, Fortooine Revision 1.22
Switch up time is 12 hours, 1 minute
System returned to ROM by reload
[ code]...
Configuration register is 0x2012
Switch#sh boot flash:
-#- --length-- -----date/time------ path
1 25793234 May 31 2011 15:20:20 cat4500e-entservicesk9-mz.122-54.SG.bin
2 25005209 Mar 08 2013 09:53:18 cat4500e-entservices-mz.122-54.SG1.bin
70033408 bytes available (58249216 bytes used)
I'm connecting the two devices above and I need an LC to SC fiber cable. It should be pretty simple but I've seen two different types of LC/SC cables - one is 8.3/125 and one is 62.5/125. I believe the 62.5 is an older cable type but when looking at the detail sheets for each of the SFPs I see that both of these support a 62.5 or 50 micron core size.
View 2 Replies View RelatedI would just like to confirm if it is possible to create a 2x10G etherchannel on a 4948.
View 4 Replies View Relatedupgrade IOS in cisco 4948 switch, I do not have admin right and network access
View 22 Replies View RelatedI am trying to setup the management vrf on the 4948 10GE so that my TACACS requests will use that vrf for out-of-band purposes. The vrf is working properly because I can ping the TACACS server using the vrf but the logins do not work. I see this error in the tacacs debug:
TPLUS(00000016)/0: Connect Error No route to host
Looking at the release notes, it states that my version (12.2.54 SG1) does support vrf aware tacacs but the documentation seems to be a bit off because i do not get a server private command option as stated in the configuration doc after configuring a tacacs server group:
[URL]
Here is my config:
ip vrf mgmtVrf
rd X:X
!
interface FastEthernet1
ip vrf forwarding mgmtVrf
ip address x.x.x.x
[code]....
In my setup , i have one core switch 4506, 3750 access switches and 4948 server switch.i have created the mngmt VLAN in every switch.the problem is i can ping the every device mngmt ip from any internal network,but my server switch mngmt ip i am not able to ping.trunk link is configure between the core and server,access switches.What is the problem with 4948 switch?
View 7 Replies View RelatedI describe an issue when i need to performe an L2 or L3 Etherchannel from a Catalyst 4948 IOS Enterprise and 2 xCatalyst 6506E bandled with VSS.
From the VSS Side when i plug cables i see on the physicals and Etherchannel that Physical and protocole layer are up. On the 4948 side, I see that physical layer is up and protocol and Etherchannel interfaces are down.
On the Etherchannel port summary i see that the port state is supended.
On the first attempt, i have test with a L3 etherchannel on both side using no switchport with two IP addresses one at each side on etherchannel interfaces.
The etherchannel are bundled with LACP mode active and on the second attempt with PAGP mode ON.
The same configured on VSS 6506E work fine with Catalyst 3560E.
ive updated my catalyst 4948-10GE to version 15.0(2)SG1.Now it is not possible to login by ssh or telnet on this switch. the access is established over the mgmt-Interface and vrf.i get a ping reply but login is no more possible now.is there an new feature in this version for vrf or remotelogin that has to be configured? if neccessary i can paste the running-config here.
View 3 Replies View RelatedI have got a new 48port Cisco catalyst 4948 switch, which I configured as a VTP client and connected to Cisco 3750 which is a VTP Server (this switch is on production network). I connected port g1/0/48 from 3750 to port g1/48 on 4948 through a straight cable and made both ports as trunk port (I also tried through cross cable). The problem is these two switches are not detecting. For testing I connected a PC directly to one of the port on 4948 (making that a switch port) still the LED on switch didn’t glow up. Is there any special command needs to be run on 4948 switches to activate its physical ports?
View 7 Replies View RelatedDoes anybody know the Maximum Throuput of a Csico 4948 using its Layer 3 capability? Is it 72mpps for Cisco 4948 and 102 mpps for Cisco 4948 10 Gigabitethernet?
View 2 Replies View RelatedI need to connect a 6500 switch with a 4948 switch using 10G optics. On 6500, line card used is WS-X6704-10GE and I am aware that WS-X6704-10GE is a xenpak and 4948 ports are X2. What is the way to make the connection between xenpak and X2 work?
View 3 Replies View RelatedWe are running a small network business and as funs of ciscos we own a some of the 4948s.We are facing an issue with couple of them as we get the below error message
C4K_CHASSIS-3-INSUFFICIENTPOWERSUPPLIESDETECTED:Insufficient power
supplies present for specified configuration
First thought to replace the power supply didn't actually work as we did that with no result.Power consumption is not an issue as well because all other 4948s work fine with 1 power supply (forgot to mention is 1 power supply in all of them).
I want to choose a pair of switches for our data center.What I need: 48 x 1GE access ports, 2 x 10GE uplink ports.Nice feature of 3750-X is stacking. So what features has 4948-10GE? Why I should prefer that switch?
View 11 Replies View RelatedI performed an upgraded on a 4948 switch and for some reason the switch kept booting with the old IOS. I was not sure if I needed to change the boot sequence but I performed this upgrade on some of our other 4948's and no issues.I eventually deleted the older IOS version and left the latest version on and reloaded switch and now switch only boots in rommon.I managed to configure the ip info and tftp server ip etc and using the following command as suggested in the rommon help, but it keeps coming back saying 'file not found', when I have checked the file does exist in the tftp server and in the tftpboot folder.
See error message below:
[URL]
Tftp Session details are ....
Filename : /tftpboot/cat4500-ipbase-mz.122-54.SG1
IP Address : 10.250.100.39
Loading from TftpServer: 10.250.150.40
Tftp session failed: File not found
I'm using a Catalyst 4948. It seems to drop all truncated packets. I don't know whether this is an expected behavior.I'm developing a program which processes packets in the following steps:
1) capture packets
2) if a packet is too long, truncate it to a certain length
3) insert a vlan tag (say 100) to each packet
4) send them to the switch
Mac address learning is disabled on the vlan 100, so the packets should be seen at all ports of the vlan. However, I only observed untruncated packets. Truncated packets seemed to be dropped by the switch.The summary of the source port is:
c4948-01#show interfaces gigabitEthernet 1/22 summary
......
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-------------------------------------------------------------------------
* GigabitEthernet1/22 0 0 0 0 4018000 7390 2000 3 0
The receiving speed was approximately equal to what I sent.The summary of another vlan 100 port is:
c4948-01#show interfaces gigabitEthernet 1/18 summary
......
Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-------------------------------------------------------------------------
* GigabitEthernet1/18 0 0 0 0 0 0 3000 4 0
Almost no packets were output.I see a Cisco document says "ingress port drops corrupted packets" [URL] then my questions are:
1) Is this the root cause of dropping truncated packets?
2) What criteria does a switch use to check corrupted packets? My understanding is that truncated packets could have wrong L3 and L4 data, but they can't be detected at L2.
3) If switch drops mal-format packets, can we disable this feature?
I have an environment where i have two nexus 7010 switches, along with 2 nexus 5510's. I need to run OSPF as a layer 3 routing protocol between the vpc peer links. I have 1 link being used as a keep alive link, and 3 other links being used as a VpC link.
1) Is it best to configure a separate Vpc VLAN i.e 1010
2) Is it best to configure a vrf context keep-alive
3) just have the management address as the peer ip's.
How to mirror port only http get packet on 4948 or 6500 ?
View 4 Replies View Related