Cisco :: Getting Mac-address-table Through SNMP On 1811
Jan 26, 2010
trying to fetch the equivalent of the mac-address-table on a 1811 with SNMP. I want a mapping between active MACs to a port ifIndex (not a VLAN interface ifIndex).
- I've snmpwalked every MIBs on this device (including all the proprietary MIBs supported by the IOS)
- I've upgraded to latest IOS from the 12.4(24)T series and also tried latest from 12.4(15)T series
- I am aware of the community index (@ sign in read-only community to split per vlan)
- I've exhausted all my google skills
On 29xx, 35xx, we obtain that information using the BRIDGE-MIB, community indexing and the following OID:
1.3.6.1.2.1.17.4.3.1.2 (dot1dTpFdbPort)
ex:
# snmpwalk -v 2c -c public@1 192.168.1.61 1.3.6.1.2.1.17.4.3.1.2
SNMPv2-SMI::mib-2.17.4.3.1.2.0.23.89.208.164.62 = INTEGER: 24
SNMPv2-SMI::mib-2.17.4.3.1.2.0.23.101.255.67.177 = INTEGER: 12
SNMPv2-SMI::mib-2.17.4.3.1.2.0.24.25.113.78.52 = INTEGER: 11
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Jan 23, 2012
I'm looking for a SNMP set command that clear the MAC Address table on a Switch Cisco 4503.
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May 29, 2013
I am currently running WCS 7.0.230 I have controllers that are 2500 that are running 7.4.100.60?
My problem is that when I try to add my controller that is a Cisco 5500 running the same 7.4.100.60 I am getting the error SNMP operation to Device failed: Sparse table not supported. Verify that the WCS and WLC versions are compatible and try again.
I have double checked SNMP strings, IP Addressing and everything else I can think of. It just doesn't make sense that I can add a Controller with the same image but different hardware and no the other to the WCS server.
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Mar 23, 2012
I've got an 1811 router running 15.4 IOS and a cable modem with 5 static IP's attached to Fa0. I would like to dedicate one of those IP's to a dedicated internal subnet (10.0.30.0/24) but I am not sure how to accomplish this?
What would be the best method to accomplish this? Unsure of where to begin..
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May 22, 2012
I'm setting up an SNMP poller to retrieve the ARP table (ipNetToMediaPhysAddress) from my SF300 switches. I can retrieve the table from SF300-24P and SF300-48P switches running Firmware Version 1.0.0.27, but get garbage for the MAC address when retrieving that same table on the same model switches running Firmware Version 1.1.1.8. Is there an outstanding defect on this code level? How can I retrieve the table showing the IP address to MAC address mappings?
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Aug 20, 2012
Can someone throw me a bone on what might be occurring here?
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Dec 5, 2011
has WiFi controller WLC4402 mac address table and can I show it somehow?
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Jan 11, 2012
Cisco 1812, Version 12.3(8)YI1..What does "none" mean ?Most of mac adressess in cam has specified interface, but several has none.
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Apr 8, 2013
we have 6500 cisco switch as a backbone switch in universty. When ı want to look mac addres table , it does no show all mac address.ı mean if ı type ;show mac address-table there are not all mac address.
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Nov 28, 2011
I have an ASA 5505 in transparent mode. The device mac address table is always empty.
show mac-address-table and show mac-learn both come with empty response.
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Dec 6, 2011
I have 3750E swiches with IOS v. 12.2(55)SE3. Couple servers connect to ths switch, after ping of IP this servers I can see mac addresses in mac address table.
For instance:
sw1#show mac address-table vlan 20
Mac Address Table
-------------------------------------------
Vlan Mac Address Type Ports(code)
---- ----------- -------- -----
When ip generate traffic to this server this mac address appear in table again on shot time (less than 10 seconds).
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Feb 27, 2013
We are running LMS Prime 4.2.3 on a Softappliance. We have a Cisco Switch behind a Non Cisco Layer-3 Device. In the end host tabe we see only the MAC-Addresses of the host connected to this switch. No IP-Address. The corresponding IP-Addresses are in the ARP-Table of this non Cisco Layer-3 Device. The arp table can also be read by snmp. Is it possible to get the ip address in the UT End Host Table in such an environment?
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Oct 28, 2012
I have the switch ============>>>>>
sw2960g============server linux
As u see above , the inetrface Gi0/6 , Gi0/7 are connected directly to linux server by two redundent links .
I mean that Gi0/6 is connected to interface0 in linux server
and Gi0/7 is connect to interface interface1 in linux server
Gi0/6===>vlan 1
Gi0/7===>vlan 2
each interface of linux server has a different ip and different gateway .
Now from switch, I make ping to interface 0 of linux server and i have a reply , every thing is ok but when i type the command :
#sh mac address-table | i Gi0/6
There is no Mac addresses and seems no Mac address relative to Gi0/6, I mean that doesn't it mandatorty to learn the mac address of linux server and write in mac table relative beside interface Gi0/6 ? How I could ping the server but no mac beside Gi0/6 ?
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Nov 27, 2011
we have cisco WS-C6509-V-E with IOS version 12.2(33)SXI4; s3223_rp_IPSERVICESK9_WAN_M) running on a switch. I am trying to configure the command "mac-address-table synchronize" under global config mode. But when I enter the command Cisco(config)#mac-address-table ?It doesn't show the synchronize option?
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Jul 12, 2010
We want to configure the "mac-address-table synchronize" command on our 6500 series switches to ensure that the CAM tables on our DFCs are in synch with the PFC on the supervisor modules. url...it is recommended that we disable the routed MAC purging with the mac-address-table aging-time 0 routed-mac global configuration command. What is a routed mac entry? Are there any issues with running that mac aging-time command?
We also plan to run this command "mac-address-table aging-time 14400" to keep our ARP and CAM tables on the same aging time to reduce unicast flooding on our network. Can we run this command with the "routed-mac" command above?
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May 8, 2011
My Catalayst 4507 is reaching up to 82% CPU utilization and I noticed that K2L2 Address Table R is causing the high CPU.
C4507#sh processes cpu | in HiPri|LoPri|CPU utilizationCPU utilization for five seconds: 82%/1%; one minute: 86%; five minutes: 87% 54 350533923 329104616 1065 13.27% 13.84% 13.86% 0 Cat4k Mgmt HiPri 55 1771768520 274992685 6442 59.91% 64.55% 66.04% 0 Cat4k Mgmt LoPri
C4507#sh platform health | in K2L2|%CPuK2L2 Address Table R 2.00 66.35 12 5 100 500 91 82 58 27272:55K2L2 New Static Addr 2.00 0.00 10 0 100 500 0 0 0 0:00K2L2 New Multicast A 2.00 0.00 10 5 100 500 0 0 0 0:18K2L2 Dynamic Address 2.00 0.00 10 5 100 500 0 0 0 0:16K2L2 Vlan Table Revi 2.00 0.00 12 8 100 500 0 0 0 1:22
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Apr 21, 2013
Does 6500 SUP720/2T support MAC Address-Table Move Update Feature?
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Jul 31, 2011
I volunteer at a school who just purchased two 48 port SGE2010 managed switches. I am not a big fan of the web gui and was hoping to see the standard Cisco command prompt instead of the menu-type interface.
Is there a way to view the MAC table showing which MAC address is plugged into which port on the switch? I have been fighting with the menu and the gui for a while now and do not see this anywhere.
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Jan 16, 2013
In datasheet of WS-SUP720-3B - link- was said that are only supported around 256K routes (fib?rib?).With this value I can't get 2 full bgp - that is around 850K ..
The supervisor is that control this or just memory ? I said this because I have a 7204-npe-g1 whith 2 fullrouting and 1G of and he are ok..
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Oct 21, 2011
I know DHCP can assign more than just address, mask, and gateway. It can also assign a hostname, and DNS. Does anybody know if it can also be used to assign an SNMP address?
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Feb 21, 2013
Im sitting with a few cisco sf-300 24 switches and i'm trying to get the Mac-addresses the switch have learned from each computer connected to the switch.
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Feb 1, 2013
I have been reading the postings on this site trying to retrieve the MAC address for the client devices (computers, printers) attached to our switches. We have approximately 500 switches and I need to map the mac address to the switch. It appears the OID information is for SNMP v2. We are restricted to using only SNMP v3. I have tried using the Cisco SNMP Object Navigator without any success.
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Dec 2, 2012
I'm developing a project where I use the SNMP protocol to discover the network. By discovering the network I mean go through all the routers and switches and retrieve the IP routing table from routers and the forwarding table from switches. With the routers I have no problem. For the switches I need to know for each port the MAC addresses and the Vlans. Basically it's use SNMP to find a port number from a MAC address. To do that i followed this tutorial: [URL]
The problem is that I'm using a Cisco 3725 Router with IOS 12.4 (21) and a NM-16ESW module to work as a Switch and when I use the OID .1.3.6.1.2.1.17 corresponding to the BRIDGE-MIB as it follows:
snmpwalk -v2c -c myrouter 10.1.1.5 .1.3.6.1.2.1.17
it returns:
SNMPv2-SMI::mib-2.17.1.1.0 = Hex-STRING: 00 00 00 00 00 00
SNMPv2-SMI::mib-2.17.1.2.0 = INTEGER: 0
SNMPv2-SMI::mib-2.17.1.3.0 = INTEGER: 4
From this I guess there's no information on the router about Vlans or anything. Other thing is that when I use community string indexing it returns a timeout. My theory is that this version doesn't support indexing but I don't know.
how can I get the Port Number from a MAC address from this "switch" (it's a router working as a switch) using SNMP?
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May 3, 2011
I have a XSR-1805 (Version 7.5.0.0) enterasys router here. Got SNMP server to work successfully. The thing is that I couldn't make the router restrict a range of address allowed to use a community. Only 10.1.0.13 is allowed to use SNMP in this case.
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Feb 20, 2013
Basically, he has an office he's supporting on a contract basis, they have a cable modem uplink. They move very large (100MB or so) EXCEL files to/from a server "somewhere out there"...The place has 19 users on cable modem (presumably commercial level). They're having "severe latency due to all the users". They're also using VOIP (not sure what product, shouldn't really matter)this doesn't pass the sniff test to me- I have 70+ users on 4 T1s and don't have the problems they claim to be having. Suspect they should be doing some packet sniffing to see who's camping on Youtube, but this is not an option....They're adding in a second cable modem line and want to bind both together. I immediately figured they should do QOS, dedicate the mission-critical traffic to 1 line and let it bleed over onto the other and take precedence if necessary. They have a Cisco 1811 router. I haven't messed with those before, but what I am seeing is they are a "fixed-configuration router". Obviously there has to be SOME config changeable- if for nothing other than IP assignment to interface and such. So what does Cisco mean by "fixed-config"? Is this basically a dumbed-down Linksys router?
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Jan 8, 2013
I need some help in configuration of Cisco IOS VPN. Basically, we have 2 Cisco 1811 routers in our company. Router 1 - Production router (IP 192.168.x.254)Router 2 - VPN router (IP 192.168.x.251). All machines/servers inside our network has been configured with a default gateway of 192.168.x.254. Hence, all internet traffic will go through the production router.
Now, we want to deploy a new router (i.e. Router 2) which will be solely used for VPN purpose (such as DMVPN, IPsec site to site, VPN client configuration etc). I have configured Router 2 with Cisco VPN client and can connect to this using VPN client application from my home PC. However, once I connect to it, I am not able to ping anything inside this network other than Router 2 IP (192.168.x.251).
Is there anything else that I would need to put into the configuration so that I can ping everything inside the network?
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Oct 19, 2011
i have cisco router 1811 , i make port forwarding for my mail server , so from outside i can access to the mail server via my mobile but inside lan i cannot because i use my global ip address at my mobile config .
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Feb 28, 2012
I have some problems with making stable VPN between SRP512W and ISR1811.Configuration:
- IKE policy - 3DES/SHA1 group2(1024bits)
- crypto map on ISR1811
One of the main issues I've noted appears when SRP loose it's IP connectivity to remote router, even if this connectivity interruption lasts for only couple of seconds. When the IP connectivity is restored SRP is unable to re-establish the IPSec session. There is connect/disconnect option in SRP menu (Status -> VPN Status -> Connect/Disconnect) and automatic VPN disable (VPN -> Site-to-Site VPN -> IKE policy -> Enable Dead Peer Detection) yet I couldn't found any option for nor automatic mechanism for VPN reconnection when the IP connectivity is reestablished. This issue lead to interruption of Site-to-Site VPN service when there is some short outages within the ISP network.
Another issue is building GRE tunnels between the same devices. Can you verify my configuration? Belive it or not - I spent more than 4-5 hours and couldn't do it.Should I make some additional settings/configurations ?
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Nov 9, 2011
i have two branch offices A & B both connected by a vpn. i am planning to add another isp on both the locations and have it just for the vpn. i.e have the second isp do just vpn and all other traffic go through the older ISP.. what are my options ? am not planning to add any extra hardware and also am not planning on acheiving any fail-over or load-balancing because i know ASA 5510 does not do load-balancing.
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Aug 16, 2011
I got a new 1811 series router. Its sh version output is " flash:c181x-advipservicesk9-mz.124-11.XW6.bin". I need to upgrade to the latest IOS. How can i find a latest one? How can i upgrade to the latest one?
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Jul 14, 2011
I am a new owner of a Cisco 1811, brand new. So im trying to follow this,
[URL]...
But when i get to this,
it won't continue, if i cancel this and not setup the WAN connection then log back into after it's rebooted i can see both lan's * both disabled * when i enable 0 it wont allow me to click add or do anything else to setup the WAN connection
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Jan 23, 2012
I am setting up my 2nd 1811 router for NAT and VPN. The 1st 1811 works great, completed a few months ago. On this 2nd 1811, I decided to just copy the working startup-config from the good, 1st router to this 2nd, and then change IPs and from there. I did not do the setup wizard, but just erased the startup-config, reloaded, gave temp IP on local LAN and copied good startup-config from TFTP server.
Question: on this 2nd 1811, I show this:
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no ip subnet-zero
I do not have this on the 1st, and I cannot get rid of it. Is this due to IOS versions?
On the 1st I have:
Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(6)T8, RELEASE SOFTWARE (fc3)
flash:c181x-advipservicesk9-mz.124-6.T8.bin
On the 2nd I have:
Cisco IOS Software, C181X Software (C181X-ADVIPSERVICESK9-M), Version 12.4(4)T1, RELEASE SOFTWARE (fc4)
flash:c181x-advipservicesk9-mz.124-4.T1.bin
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Jul 17, 2012
I am having an issue where the GRE tunnels are up/up but are not pingable. The GRE tunnels are on a cisco 1811 and cisco 2811 routers The tunnel source and destination IP addresses are private addresses. These private addresses are pingable to each other and they are connected via IPSEC. The IPSEC tunnels are generated from the ASA to which the cisco routers connect. Probably the tunnels are up/up because keepalives are not configured. But I am still not able to see why I cnt ping the end points. The ACL for IPSEC in ASA includes the "permit gre host <Private IP 1> hist <Private IP 2>" commands.
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