Cisco Switching/Routing :: 6509 Static MAC Address Entry And MS NLB / IPv6

May 23, 2012

I have seen other discussions regarding Static MAC address entries on IPv4, but what of IPv6?We have MS NLB solutions and they are working fine. We have Cisco 6509/6504, Version 12.2(33)SXI5
 
But then we have a new one for a new ActiveDirectory solution, and on those networks we have implemented IPv6.
 
How is Static MAC address entries and MS NLB solved in IPv6 (i.e arp ip.ip.ip.ip mac.mac.mac ARPA gi1/1). I can't seem to find much examples or documentation on this? Is it replaced with another function?The reason I ask is twofold.

1. I really want to know

2. The NLB cluster seem to drop IPv6 traffic at even intervals, witch seems to correspond with NLB transition.

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Cisco Switching/Routing :: 6509 Won't Remove ACL Entry

Dec 3, 2012

We have a pair of 6509's with duplicate ACL lists & entries.

1 = Version 12.2(33)SXI4a
2 = Version 12.2(18)SXF15a
 
I wanted to remove some logging that was on an entry on one of our extended ACL's. On 1 this worked fine with the no 400

400 <acl rule without log>
 
However on 2 it lets me carry out the no 400 command but when i go to add the 400 <acl rule without log> i get the error % Duplicate sequence number.sure enough when i perform the 'Show access-lists <Name>' it is still there!
  
I have tried the following:

Adding a duplicate ACL entry before it (399) without log and i still get hits on line 400Adding and removing the duplicate created line 399 (without logging) with no issues.Adding and removing a dupliacte ACL (without Logging) after (line 401) with no issues 

It looks like it is just this line it seems to think it has removed but hasn't?!
 
I understand an option is to duplicate the ACL in a text editor remove line, delete the ACL and put the edit back in .....however i wondered if this is something known (bug).

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Static IP Address Entry Will Not Save?

Feb 24, 2011

Everytime I start one of my two Windows machines, I need to go to the control panel network adapter and enter the static IP address in the IPV4 properties. It is always blank after a shutdown.I have two machines that are networked for flight simming.One of the machines must have a static IP so I configured both static. Not sure if this has anything to do with my problem.

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Cisco Switching/Routing :: SRW2024-K9-BR / Switch To Configure Static ARP Entry For MS NLB Multicast?

Mar 14, 2013

I need a switch to configure a static ARP entry for a MS NLB multicast.

Could answer me if I can do with the SRW2024-K9-BR?

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Linksys Wireless Router :: DVR8-4000 IPv6 Static Address

Apr 10, 2013

I have a Swann Communication security camera system with their DVR8-4000 hooked to an IPv4 router, connected to the Internet using the new HughesNet Gen4 service. The Swann DVR wired to my router requires a static IP address.  HughesNet Gen4 is implemented with IPv6 and I am told that it does not accommodate an IPv4 type static address.
 
I have discussed the issue with both company’s technical support.  HughesNet Gen4 reps recognize the issue and may support static addressing in the future, but not now.  Swann reps will not modify their implementation because of the relatively small Gen4 market.  The Swann rep suggested that replacing my IPv4 router with an IPv6 router might resolve the “static IP address” issue.I am looking at several Linksys IPv6 routers including the EA4500 SMART WiFi Wireless Router N900, but know too little about IPv4, IPv6 and router/static addressing to proceed unassisted.
 
1) can I implement a static address with an Linksys IPv6 router cdonnected to Gen4?  

2) Which Linksys routers offer IPv6 support? 

3) How does one go about setting an IPv6 static address using HughesNet Gen4 on a Linksys router?

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Cisco Switching/Routing :: 6509 / 3750 - No Default Gateway Or Static Routes To Any IP

Mar 5, 2013

We have a 6509 series of core switches and 3750 series of L2 switches, There is no default gateway or any static routes to any IP.VLAN 1 is made admin down and another vlan is used for all communication here in this environment

Attached is configuration for reference But still I am able to take telnet or SSH. I want to know how telnet or SSH or tacacs authentication happens without any static or default route.

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Cisco Switching/Routing :: 6509-E / Unable To Perform (ip Nat Inside Source Static Tcp Xxx Interface)

Jan 21, 2013

Platform:  
cisco6509-E   with FWSM
 Supervisor Engine 32 PISA 8GE
 sup-bootdisk:s32p3-adventerprisek9_wan-mz.122-18.ZY2.bin

command: 
 
(config)#ip nat inside source static tcp 10.10.8.147 14029 interface g7/8 14029
 (config)#no ip nat inside source static tcp 10.10.8.147 14029 interface g7/8 14029
 #clear ip nat tran *
 (config)#ip nat inside source static tcp 10.10.8.147 14029 interface g7/8 14029
 %Port 14029 is being used by system 
 Or %Static entry in use, cannot change
 
But when I perform "sh ip nat tran" command,There is nothing

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Cisco Switching/Routing :: 6509 / Can't Remove Bgp Aggregate-address Statements

Jan 29, 2012

I have a 6509 running s72033_rp-ADVIPSERVICESK9_WAN-M version 12.2(33)SXH5.  Four incorrect bgp aggregate-address statements were entered in which overlap.  Attempted to remove the statements but they won't come out.
 
aggregate address 16.37.31.0 255.255.224.0 summary-only
aggregate address 16.37.30.0 255.255.224.0 summary-only
aggregate address 16.37.29.0 255.255.224.0 summary-only
aggregate address 16.37.26.0 255.255.224.0 summary only
 
I have entered in the correct statements and have no problem getting those in, removing them, and reentering them.

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Cisco Switching/Routing :: 6509 - HSRP Standby Address Not Reachable

Jun 11, 2013

I have  my hsp setup where switch A and switch B share active/standby roles among several vlans. In the last few weeks, i have seen trouble tickets where connectivity is lost and upon investigation i discover that i can ping physical interface IP addresses for both standby and active devices but not the standby IP. I have also validated configurations and layer 2 paths and they haven't been broken.

What I end up doing is failover to the standby device and back and the problem clears, reachability is restored. My question is whether I am solving this the right way. If so, what is it that would cause the standby IP to not be reachable and how does my solution fix that? N/B the switches are catalyst 6509's.

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Cisco Switching/Routing :: 6509 / Mac Address Error Message No Entries Present

Dec 6, 2012

I am receiving this error after connecting a copper adapter on a GBIC blade in a 6509. Here are the results from the show Interface.  I am waiting to confirm the device on the other side settings but as far as I see I get UP and Up for protocol and line respectively.
 
GigabitEthernet2/11 is up, line protocol is up (connected)
Hardware is C6k 1000Mb 802.3, address is 0009.11e4.f3ce (bia 0009.11e4.f3ce)
Description: RCPBSDEV
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set

[code]....

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Cisco Application :: ACE10-6500-K9 / How Static Entry Under Sticky Performs

Jul 26, 2011

how a static entry under a "sticky" performs Configuring Static IP Address Sticky Table Entries Cisco Documentation Says When you configure a static entry, the ACE enters it into the sticky table immediately. Configuring the ACE Action on Server Failure failaction purge # The purge keyword specifies that the ACE remove the  connections to a real server  if that real server in the server farm  fails after you enter the  command. The ACE sends a reset (RST) to both  the client and the server  that failed. Cisco Documentation Says If you do not configure this command, the ACE takes no action when a server fails
 
sample config
sticky ip-netmask 255.255.255.240 address source STICKY1
timeout 180   replicate sticky   serverfarm SERVERFARM1   8 static client source 192.168.12.15 rserver SERVER1
  
Question1 - What happens if SERVER1 fails?
 
a) Does the ACE let the connections to SERVER1 timeout(default behaviour) and then load-balance new connections coming in deom 192.168.12.15 to another server in SERVERFARM1

ORb)  Does the ACE reset the connections to SERVER1  immediately and starts  load-balancing new conenction coming in from  192.168.12.15 to other  servers in SERVERFARM1 ?

ORc) Does the ACE just drop the current and new connections from 192.168.12.15 till SERVER1 comes back up ?

OR d) Is it dealt differently?
 
Question2 - Now what happens if the failed server(SERVER1) comes back up after some time?
 
e) Does the ACE reset any current connections from 192.168.1.15 and starts sending them to SERVER1 ?

ORf)  Does the ACE leave the current connections from 192.168.1.15 to other  servers in SERVERFARM1 as they are and send any new connections
from 192.168.1.15 to SERVER1?

ORg) Is it dealt differently?
 
My guess is Question1 -> a) and Question2 -> e)
 
ACE model =  ACE10-6500-K9
Version =  A2(3.3) 

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Cisco Switching/Routing :: 3750 / 2811 - CEF Entry

Sep 25, 2012

We have a site and on that site we have a server which is down form  last two days. However , to manage these devices we are not using any  tools. We are not able to find this server that where it is located and  on which switch it is connected to.
 
I want to know that the timer for mac address is 5 minutes and arp timeout is 4 hours . Is there any way to find out the mac address of the server . I  feel like this can we done with cef ? Is it true or not I  am not sure. I am running 3750 stacks and 2811 routers. 3750 stacks are  working as layer 3 devices. They are also running the pretty new IOS 12.2(53)SE.
 
According to my understanding now a days CEF entry does not expire if we are not using them. They remain in cache as we are running with destination base CEF.

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Cisco Switching/Routing :: PBR With Deny ACL Entry On 3750

Aug 19, 2011

Does PBR with deny ACL entries on a 3750 are still punted to the CPU? I found this article: URL
 
High CPU Due to Policy Based RoutingPolicy Based Routing (PBR) implementation in Cisco Catalyst 3750 switches has some limitations. If these restrictions are not followed, it can cause high CPU utilization. You can enable PBR on a routed port or an SVI. The switch does not support route-map deny statements for PBR. Multicast traffic is not policy-routed. PBR applies only to unicast traffic. Do not match ACLs that permit packets destined for a local address. PBR forwards these packets, which can cause ping or Telnet failure or route protocol flapping.

Do not match ACLs with deny ACEs. Packets that match a deny ACE are sent to the CPU, which can cause high CPU utilization.
In order to use PBR, you must first enable the routing template with the sdm prefer routing global configuration command. PBR is not supported with the VLAN or default template
 
I checked the latest config guide, and those same guidelines are still listed. If that limitation is still there, are those packets switched at the process level (ip_input) or the interrupt level?

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Cisco Switching/Routing :: 6509 To 6509-E Chassis Upgrade?

Nov 21, 2011

I currently have a couple of 6509 chassis (router/switches) with the following hardware blades:

     x3     48 ports
     x1     NAM
     x2     Sup720
     Running 12.2(18)SXF3
 
I am keeping the four Sup720 modules and have purchased new versions of the others blades including two new 6509-E chassis?Can I take my stand-by Sup720 out of the production machine and insert it into the new chassis?

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Cisco Switching/Routing :: Upgrade Of 6509 To 6509-E Chassis

Nov 21, 2011

I currently have a couple of 6509 chassis (router/switches) with the following hardware blades:

x3     48 ports
x1     NAM
x2     Sup720

Running 12.2(18)SXF3.I am keeping the four Sup720 modules and have purchased new versions of the others blades including two new 6509-E chassis. Can I take my stand-by Sup720 out of the production machine and insert it into the new chassis?

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Cisco Switching/Routing :: 2960 / TNSWAGCS01002 / ARP Incomplete Entry

Dec 26, 2011

I plugged an IP device into a 2960 Catalyst switch. The port is up, but there is no MAC address learned on it:
 
TNSWAGCS01002(config-if)#do sh mac add int fa0/16
Mac Address Table
-------------------------------------------
 Vlan    Mac Address       Type        Ports
----    -----------       --------    -----
TNSWAGCS01002(config-if)#
 TNSWAGCS01002(config-if)#do sh int fa0/16
FastEthernet0/16 is up, line protocol is up (connected)
  Hardware is Fast Ethernet, address is 0064.40ee.f510 (bia 0064.40ee.f510)
  Description: --- STC ---

[code]....
 
I read that it may be a L1/L2 issue. We tried with another ethernet cable. We also tried with another IP device of the same model. That did not solve the issue.

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Cisco Switching/Routing :: Nexus 7000 Log Entry Explanation?

Dec 4, 2011

I have some error messages in the Nexus 7000 log, after searching i cannot find an adequate explanation, pretty much the only thing i can find is below and i don’t think it is very relevant to my situation. The device is in production and so reloading and pulling card willy nilly is the last resort.

Device = Nexus 7018
IOS version = 5.1(2)
Log messages=
2011 Dec  2 14:52:35 IAS01LVSWIPC01 %OC_USD-SLOT8-2-RF_CRC: OC2 received packets with CRC error from MOD 6 through XBAR slot 1/inst 1 and slot 2/inst 1 and slot 3/inst 1

[code]....

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Cisco Switching/Routing :: 3560 - Unable To See Entry For Switch

Oct 30, 2011

I have configured a new switch 3560 switch and connected to 4500 switch and formed a trunk connectivity.Now the issue i am facing is when i do a SH CDP NEIGHBOUR from 3560 switch i am able so see 4500 swries switch but at the same time when i do SH CDP NEIGHBOUR form 4500 series switch i am not able to see the entry for 3560 switch.But i am able to telnet the new switch with out any issues

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Cisco Switching/Routing :: Clearing Single ARP Entry In 6500 Switch?

Feb 2, 2009

Is there any way to clear a single ARP cache entry on the 6500 switch ?

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Cisco Switching/Routing :: 1841 Router Taking On ARP Table Entry

Dec 22, 2011

The issue is occuring on our local LAN where my ARP requests are being modified after a period of time by the router for one host.  I'm finding that the host will work fine with the correct MAC IP pairing for a period of time and then about 15-30 minutes later, the arp table is changing so the associated mac/IP address is now the mac address of the router interface.
 
The FastEthernet 0/1 port has no ip proxy-arp enabled and is set with ip nat inside.This only started happening after restarting the router, however the running config was saved as the startup config prior to the restart.I've tried hard-coding the entry with the command arp 10.15.4.190 c82a.1459.0579 ARPA  however that is not working as expected.
 
The device is an 1841 ISR with the advanced IP Services bundle loaded.  Is there some way that the router is viewing my host (provides DNS, Directory Services) as a intrustion attempt and somehow rejecting the packets?

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Cisco Switching/Routing :: Login To 2950 Switch And Modify VLAN Entry On It?

Nov 3, 2011

In my lab, there are some machines that are connected using Cisco 2950 switches. Those machines belong to a VLAN.Now I need to modify the VLAN settings of the machines and as such I also need to modify the VLAN settings on the ports on the Cisco switches.
 
In order to do this, first I need to login to those switches, but due to a lack of knowledge transfer, I don't have the password. Is the some generic password?Second I will need to  modify the VLAN settings on each individual port. How can I do this?

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Cisco Switching/Routing :: 2811 - Error Unable To Find Entry For VLAN (1)

Aug 23, 2009

Aug 24 11:32:16.275 AEST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan21, changed state to down
Aug 24 11:32:36.827 AEST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan21, changed state to up
Aug 24 11:35:23.854 AEST: %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/1/2, changed state to down
Aug 24 11:35:24.854 AEST: %LINK-3-UPDOWN: Interface FastEthernet0/1/2, changed state to downesw_mrvl_vlan_port_remove : Unable to find entry for VLAN(1) dbnum(1)
esw_mrvl_vlan_port_remove : Unable to find entry for VLAN(1) dbnum(1)(code)

When the above problem happens, as work-around, we delete VLAN.DAT file on the Compact Flash of this 2811 router and recopy the VLAN>DAT  file back to teh Compact Flash.
 
Then it runs for a few weeks and the same problem happened.
 
Then we put a new Compact Flash and recopied VLAN.DAT to new CF and it ran for 3 weeks and same problem started again.
 
Could be 2811 router motherboard? This customer has thousands of these 2811 routers in identical setups and this is the only router that is having this problem. 

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Cisco Switching/Routing :: EIGRP (AD90) - Are Redistributed Routes Considered For RIB Entry

Mar 17, 2013

If a router receives EIGRP (AD90) routes, and is configured to redistribute thoes routes into BGP(AD20), why does the RIB show only the incoming EIGRP routes and not the redistributed bgp routes?   Are redistributed routes considered for RIB entry in the router that is doing the redistribution

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Cisco :: Use DNS Entry In Extended ACL Instead Of IP Address Range?

Sep 1, 2011

Is it possible to use a DNS entry in an extended ACL instead of an IP address range?

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D-Link DIR-615 :: IPv6 Static Routes

May 5, 2011

Will there be a way sometime in the future to add static IPv6 routes?  I have a routed /64 and a routed /48 from a tunnel broker that terminates on my DIR-815, and I want to hang the /48 off of another router that I have attached to my LAN interface(goes to my home lab setup that I use for my job).  I could just move the tunnel endpoint to the other router, but I like having IPv6 access for all my other PCs on the LAN segment.

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Cisco Firewall :: 5520 - Static Mapping On ASA From IPv6 To IPv4

Dec 7, 2011

ASA 5520 running 8.2
 
Is it possible to do static (inside,outside) with the outside address being IPv6 and the inside IPv4?
 
If yes, is it possible to do this in parallel with an existing static mapping that goes IPv4 to IPv4?

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D-Link DIR-655 :: Connectivity With IPv6 / ISP Providing Static Connection

Jul 19, 2012

We have some technical issue with IPv6 router configuration[DLINK 655] when we try to connect it with ISP provided static IPv6 connection.

[Code]...

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Linksys Wireless Router :: WRT54GC / Entry 10 - Invalid IP Address

Jan 27, 2012

im triyng to forward a port but when i click save settings it give me a message: "Entry 10: Invalid IP Address".

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Cisco Switching/Routing :: IPv6 RIP Not Being Learned ME3600

May 20, 2013

I have a very basic setup here but strange the router is learning RIP routes advertised by the switch but the switch is learning anyRIP routes. Debug shows the switch is sending updates but not receiving any. There is also these error: %MRIB_API-3-ASYNC_ERR: Asynchronous error: failed to register to the MRIB. errno 0xE
 
I can ping across the gig 0/2 (switch) and GIg 0/2/0 (router)
 
sw01 - ME 3600
rtr1 - ASR 1001 
sw01 config

[Code]......

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Cisco Switching/Routing :: IPv6 HSRP Implementation On IOS-XR 4.2.1

Nov 11, 2012

I'm looking to try and implement ipv6 HSRP on a series of IOS-XR Routers running 4.2.1 following on from successfully setting up IPv6 HSRP on a few cat6509s on VLAN Interfaces in other parts of the network. I have entered the "router hsrp" configuration menu and gone into the interface in question that I'm looking to setup with IPv6 HSRP. Unfortunately, there version 2 or address-family ipv6 commands are not available.

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Cisco Switching/Routing :: How To Enable Ipv6 On ME3600

Mar 18, 2012

I use IOS Software, ME360x Software (ME360x-UNIVERSALK9-M), Version 12.2(52)EY2. I not found the command "ipv6" on global and interface configuration.

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Cisco Switching/Routing :: 2960 Switch Is Supportive To IPv6?

Nov 28, 2012

I need to know the 172cisco 1 router support to IPv6 & it support to IPv6 then which IOS is required for it.Also I need to know the cisco 2960 switch is support to IPv6?

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Cisco Switching/Routing :: Catalyst 2960S IOS 15.0.2 IPv6 Don't Work

Aug 8, 2012

Just I have upgraded some 2960S to IOS 15.0(2)SE from a IOS 15.0(1)SE3 and the catalyst don't switch any IPv6 traffic. Don't work any RA and also don't work any unicast IPv6 traffic from any interface. I can see some references to IPv6 changes in the FHS (First Hop Security) in the Release Notes, but no any reference to changes in the configuration.
 
The switches don't have any IPv6 specific configuration and the sdm is the default templata. Returning to 15.0(1)SE3 everything work ok.
 
On Catalyst 2960, and 3560E this IOS version seem to work fine with IPv6.

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