Cisco Switching/Routing :: 4948E - Configure Switch Gigabit Port
Sep 11, 2012
Trying to configure the Cisco 4948e switch gigabit ethernet port with "switch port trunk encapsulation dot1q", but didn't get the option. Please find below the options got after "swith port trunk"............
SW(config-if)#switch port trunk ?
allowed Set allowed V LAN characteristics when interface is in trunking mode
native Set trunking native characteristics when interface is in trunking mode
pruning Set pruning V LAN characteristics when interface is in trunking mode
SW(config-if)#switch port trunk. Please find below the version of the SW............
SW#sh ver
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-LANBASE-M), Versi
on 12.2(54)SG1, RELEASE SOFTWARE (fc1)
Technical Support: {URL}
ROM: 12.2(44r)SG11
Hobgoblin Revision 21, Fortooine Revision 1.22
[code]...
So, whether the command is not supporting on this Cisco switch ? But we have Cisco 4948 Cisco sw where that command is working fine.
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Apr 12, 2012
Is it possible to reset this switch oif yo uare unable to get into the console or web interfaces?
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Sep 14, 2012
I am trying to configure a loop back interface like so: [URL], on the following device:
C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(50)SE, RELEASE SOFTWARE (fc1on port gig0/1 which is using a 1000Base-SX adapter. This is for troubleshooting purposes and it does not appear to be a feasible option. Is there another way to accomplish in the IOS?
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Sep 3, 2012
I am trying to setup SNMP v3 on a 4948E switch here is what I have done so far:
snmp-server location "location"
snmp-server contact IT Admins
snmp-server group SNMPgrp v3 priv read SNMP-ro write SNMP-rw access 80
snmp-server user snmp_user SNMPgrp v3 auth sha xxxxxxxxx priv aes 128 xxxxxxxx access 80
What else am I missing and how can I confirm that it is configured correctly?
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Dec 5, 2012
I have been asked to look at designing a network internally. I have no control of the upstream network besides requesting changes.Essentially I'm confused as to the best way to approach configuring the following and wondered if you could share any experiences. It's stretching the limits of a CCNA IMHO, although I understand a lot about networking this is one area where I'm a little sketchy.
Kit list:
4948-E-S or E-E switches.
Cisco ASA 5545 firewalls
Cisco ASA 5520 firewall
& Multiple L2 switches
- I have 3 subnets in total, a /29 for routing and two larger subnets routed to the /29
What I'm trying to do:
1) Have some hosts protected by the ASA 5545 firewalls, probably in routed mode (that's the confusing part). I cannot use NAT so the inside interface/VLAN would need public IP's.
2) Have some hosts not protected by the ASA, therefore straight out onto the public Internet with no firewall whatsoever, they connect directly to the L3 or to the L3 via a L2 switch.
3) Have the ASA 5520 take an IP from the public (non-protected range), as this will be a VPN endpoint too and will also need to have NAT enabled. This should be easy as it just takes an IP from a public subnet, the ASA 5545's are the tricky part as they cannot use NAT at all. I've also been advised not to use Transparent mode either.
4) L3 switches are essentially external switches, doing the routing for our subnets, before upstream.
5) Upstream provider provides gateway with HSRP, we're looking at using HSRP and a routing protocol on our side over two 4948 switches. Any recommendations on this?
6) Further to point 5, we do not currently have any ability to do BGP or anything. That would be done by a separate team, upstream.
Note: I've also got to justify the use of each IP to the network management team, they are quite stingy so I have to be careful that I don't waste too many IP's for core network. So what I'm thinking is I have to create subnetworks of my main subnets to break them up into smaller pieces, and then add some onto the inside interface of the ASA and others will be on the L3 switch. Then of course route the networks to the ASA outside IP. Saying that, I'm not clear if I should create a /29 or /30 to route to the outside of the ASA or grab one from the larger subnet as it were? The final outcome is that we can connect a machine directly to the Internet or behind a firewall, depending on the requirements for that individual device. All devices will have public IPs.
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Jun 24, 2012
I need to configure a Cisco 2960 switch as a DHCP server. The current IP address will be on a different seed than the DHCP addresses. i.e.
Switch IP = 10.1.2.3, GW = 10.1.2.1, Subnet = 255.255.255.0
DHCP addresses would be 192.168.1.1 - 200, GW=???? (10.1.2.3?) and subnet would be 255.255.255.0
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Feb 14, 2013
Can i configure access ports into port channel on Nexus 7K switch.If possible then provide the complete configuration.....
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Feb 26, 2012
I have a switch layer 6500 series connected to a firewall, the port configuration between them is layer 2, in another words I do not configure an IP address in the Cisco switch port to conected it in the firewall, but when a apply a policy on firewall it lose communication with others vlans, just the vlan that is connected between the switch and firewall works, attachment the design. I think that is necessary to configure the connection between the firewall and switch as layer 3 ( a port with IP address in the switch), but I would like to know why? The switch is configured with about 10 vlan and it is a inter vlan routing, a default route is configured in the switch where the gateway is the firewall.
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Aug 1, 2012
We have Dell M6220 blade server that server is connected to cisco 3750 switch. I am trying to configure LACP in 3750 for two port which are connected to Dell M6220 server switch. The channel-group 2 mode active commande is not taking then its showing the error protocol mismatch and if i run show int port-channel 2 command the port channel status is showing down. The Dell server switch is on simple mode. below i have attached the required details.
Switch#show int port-channel 2
Port-channel2 is down, line protocol is down (notconnect)
Hardware is EtherChannel, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
[code]...
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Jun 4, 2013
I have a 3550 switch right now, and need to upgrade to a gigabit switch, so I'm looking at a 3560G-48. For some reason I purchased an EMI version of my 3550, but run the ipbase image...what I need to look for - is a 3560G-48-s good for what I need?
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Mar 12, 2012
Brand new 2960. When I plug a cable into the port, nothing happens. The port light doesn't begin negotiation or anything, it just stays dark. The cable works fine--I have it on another switchport with a crossover connector connecting to a little Cisco SOHO switch without problems.
I've done the following:
switchport
switchport mode trunk
switchport trunk allowed vlan 1
no shutdown
In other words, I've fiddled with it. But I don't know why it doesn't light up..
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Dec 29, 2012
I have a Cisco 2851 router and need an additional gigabit Ethernet port. How to get the part number I need to order?
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Jan 7, 2013
We have recently purchased a Cisco 4506 that has several Gigabit Ethernet modules installed.One of the Ethernet Gigabit modules - a WS-X4424-GB-RJ45 - is being picky with who it talks to at Gigabit Ethernet.
If I plug a laptop into one of it's RJ45 ports using a Cat 6 cable, nothing happens. No link light, no notification of link up or down on port statistics, absolutely nothing.If I plug a server into the same port it works fine at Gigabit Ethernet (even using the same Cat 6 cable).I can get the module to recognize a laptop if I fix the speed/duplex on the laptop to 100Mb/Full. I have tried this with other staff laptops from different vendors (HP / Dell / etc.) all with the same result.
The module directly underneath this module - a WS-X4448-GB-RJ45 - works fine for both laptops and servers. We have tried swapping the module positions but to no avail.
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Feb 11, 2013
I just got a Cisco 2960G 24-port gigabit switch so that our HP servers can have a Gigabit connection to the network. I moved 2 servers to it (HP Proliant DL380's) but they don't actually seem to be able to achieve even close to 1000Gbps. I ran same some LAN bandwidth tests and it was showing only around 200-300 Mbps between all of them. I also ran a network stress test utility, LAN Tornado, and it was showing packet loss as high as 60% when on gigabit, and only .07% when on 100Mbps.
-Both the NIC's and the switch ports are set to 1000/Full
-Currently using Cat5e cabling no more than 25Ft in length (I know Cat6 would be better but Cat5e is supposed to support Gigabit)
-All servers are on the same VLAN
Here are the port statistics when running just a stress test @ 10Mbps that had a 45% packet loss. What's odd though is when I set the servers and switches to 100Mbps, I get less than 1% packet loss.
GigabitEthernet1/0/16 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 203a.07ff.7e90 (bia 203a.07ff.7e90)
MTU 9000 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
[Code].....
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Nov 20, 2011
We have Cisco 3524XL switch, Motorola AXS1800 chassis. I am configuring this cisco switch so I can connect AXS1800 traffic thru cisco 3524XL, on switch port gigabit 0/1, I am using cisco Part no. WS-G5486 (1000Base-LX) connector to connect to AXS1800, both port are member of vlan 200 allowed, and configured dhcp-server 192.168.0.1, but still I can't ping any host or host can't get DHCP server.
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Sep 24, 2012
We recently upgraded the switch to which an old security device was connected. It worked fine on the old switch's FastEthernet port, which was configured for speed 10 and duplex half, as that is what the device required. The new switch is a 3560X with all Gigabit ports, but the security device's port, also configured with speed 10 and duplex half, does not connect properly.As a temporary test, we daisychained another switch that has FastEthernet ports, and the security device works again.Is there anything else that needs to be added to the configuration, when using Gigabit ports at 10/half?
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Dec 26, 2011
We have Cisco 3524XL switch, Motorola AXS1800 chassis. I am configuring this Cisco switch so I can connect AXS1800 traffic thru Cisco 3524XL, on switch port gigabit 0/1, I am using Cisco Part no. WS-G5486 (1000Base-LX) connector to connect to AXS1800, both port are member of v lan 200 allowed, and configured dhcp-server 192.168.0.1, but still I can't ping any host or host can't get DHCP server. I have attached my config file for your review.
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Jan 30, 2013
Using a 4948E switch with FastEthernet1 as the management interface which uses the VRF mgmtVrf. I cannot get DNS resolution to work for some reason.
I am using code enterprise 15.1-2.SG and here are the relevant config snippets:
ip domain-lookup source-interface FastEthernet1
ip domain-name domain.com
ip name-server 4.2.2.1
[Code].....
I read online there are some commands in a different code that support specifying the VRF along with the name servers, but I don't have those options. All I can do is set the source-interface on the domain-lookup command.
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Sep 4, 2012
I'm in the process to install two 4948E switches. I will be configuring GLBP and wanted to get some guidelines on configuring GLBP and EIGRP:
- First question is like HSRP I'm configuring it on both swithches like this:
Switch 1:
interface vlan 5
ip address 10.1.5.249 255.255.255.0
glbp 5 ip 10.1.5.1
glbp 5 priority 110
glbp 5 preempt
glbp 5 authentication md5 key-string xxxxxx
[code]....
- Second question is about EIGRP, when I configure EIGRP on the main switch that is AVG with the following commands, will I also have to run the same commands on the second 4948 E too?
router eigrp 10
network 10.1.5.0 255.255.255.0
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Jan 14, 2012
I want to understand - if 10G ports of 4948E (4 x 10Gb) they are block or non-blocks? I want to connect this switches with 20 GB (lag) to my BB switches and i need to prepare my infrastructure to 17.5GB troughput of video traffic.
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Feb 22, 2012
Cisco c4948e switch log is showing :
COMPACTFLASHNOTREADY: Compact flash is not ready
Feb 24 00:28:22.338 UTC: %C4K_FLASH-4-COMPACTFLASHNOTREADY: Compact flash is not ready
COMPACTFLASHNOTREADY: Compact flash is not readyFeb 24 00:28:22.338 UTC: %C4K_FLASH-4-COMPACTFLASHNOTREADY: Compact flash is not ready
Checked the data sheet and is not supported. Why we get this log from the switch? is it cosmetic?
AME: "Linecard(slot 1)", DESCR: "10/100/1000BaseT (RJ45), 10GE (SFP+) Supervisor with 48 10/100/1000BASET ports and 4 10GE SFP+ port"PID: WS-C4948E , VID: V01 , SN: CAT1425S0NZ
NAME: "TenGigabitEthernet1/49", DESCR: "SFP-10Gbase-SR"PID: SFP-10G-SR , VID: V02 , SN: AGD132134ER
NAME: "TenGigabitEthernet1/50", DESCR: "1000BaseLH"PID: Unspecified , VID: , SN: FNS141203YF
[code]...
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Jun 21, 2012
for the best dollar spent what is the best 48 port gigabit switch i could buy for a home network?
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Sep 28, 2008
On a 3750 switch, is it possible to configure jumbo frames only on certain interfaces and leave the other ones as they are?
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Aug 22, 2011
can you recommend a 5 port gigabit switch? The crucial requirement is that it doesn't have a transformer, but has the power circuitry built in.
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Nov 2, 2011
i have an issue to connect a trunk between cisco switch and extreme switch i have many vlans that i want to cross via a link between cisco 3750 switch and a Extreme Alpine 3800 switch
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Sep 1, 2007
Can we force the Gigabit Ethernet port to be 1000 full duplex in Cisco Catalyst Express 500 series?
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Nov 16, 2011
We have recently purchased SG 300-52Port Cisco Switch to support our Network but they constantly having some bizarre issues or I assume bugs, i.e. we cannot Telnet nor SSH to the switch now, whereas we were able to SSH before, we have set them up for Remote Log Services to get some syslogs and reports but no report have been generated nor logs,
I have done some testing through Wireshark and there are absolutely no reports / logs.We have some real issues with this switch and it’s hard to believe that this is a Cisco Product,
SG 300-52 Port Gigabit Managed Switch
Firmware Version (Active Image ) : 1.1.1.8
Firmware Version (Non-active ) : 1.1.0.73
Boot Version : 1.0.0.4
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May 8, 2012
On the supervisor card of a cisco 6500 series, according to the following link, [URL] it only has 2 uplink ports on the card. Would I be correct in assuming that I only have those to ports that I can configure IP addresses on?
The cisco that is being devlivere is coming with a 48 port switch and 24 port fibre switch. Could I change any of those ports into a router port and configure IP addresses on those?
The supervisor card is a ws-sup-720-3b the 48 port switch is a ws-x6748-ge-tx the 24 port fibre switch is ws-x6724-sfp
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Jun 5, 2013
I'm fairly new to Cisco products am in the process of developing my network knowledge on a deeper level. I have a 3825 with a HWIC-4ESW and I'm struggling to fully understand how the two "see" each other. I've setup a V LAN with a layer 3 address on the HWIC and added the switch ports to it. This seemed to allow devices connected to the switch ports to talk to the built-in router ports. I thought this was all making sense until i applied an access-list to the router port. It's a simple ACL i'm just using for testing and the only thing it does is blocks telnet from anywhere. I know the ACL is setup properly because if I connect a device directly to the router port i cannot telnet to the port. However, if i connect a device to one of the switch ports, i am able to telnet to the router port successfully.
It seems that I'm missing something with how traffic flows from the switch port to the router ports and how the two "see" each other.
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Dec 28, 2008
what is the use of no switch port command in L3 switch?
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Feb 26, 2012
I was looking for a way to connect an AUX port from a 1700 router to a 6500 switch module console port, to see the output of the Switch's on the 1700 router, in case there is a network downtime, I could see what's going on in the switch, what cable should I use ? Also, is there is any kind of documentation for this type of config what have I seen is very few info.
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Mar 11, 2011
I've been looking at picking up a 16-24 port gigabit switch that supports trunking, vlans etc. for home use.
I've looked at the Cisco SG2/300's, HP 1810g-24 and the Dell 2816 and 2824 switches, and it seems like the Cisco's are the best buy (layer 3'ish features, same price as the HP) but there isn't much about them.
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Aug 24, 2011
I got one SF 300-48 layer 3 switch I tried to configure to use it in the office network.Unfortunately I'm unable to configure the VLAN settings.I need port one for input(VLAN2),port 7-15 for another vlan(vlan3) also need to connect with the vlan 4.port 15 is another vlan(vlan4) this is for wireless.Other ports are static.It doesn't get any connections with other vlans.I wish to know how to configure vlans in GUI mode.I tried , But I can't get the Vlan setting correctly.Also,I need to know how to communicate both vlans in GUI mode.
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