Cisco WAN :: 4503 - HSRP Switchover Takes 7-8 Ping Losses?
Apr 7, 2011
I have two 4503 switches connected individually two 5510 Asa. My web server is under 5510 dmz interface. From Two 5510 Asa dmz interface there are two cables connected to two individual server farm switches.The web server in connected to this server farm switches.My local lan in connected to a cisco linksys switch. from that two cables are connected two individual 4503 switches on same vlan. i configured hsrp on this vlan. i pings the web server from local lan. when i unplugged one cable from Primary switch then it take 7-8 request timeout to recover into Secondary switch. it takes about 40 sec to switchover. it takes too much time. i also tune the timers but no luck. My Primary switch is also a Root Bridge.
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Feb 3, 2011
I want to run HSRP into my network.i am using two 4503 switch one is main and another one is standby. i configured V LAN into my switch and its running, now i want to configure HSRP. my configure is attach with this mail and my main switch gi2/22 is connect backup switch gi2/22 and all user is connect to both switch as like HSRP network.
I can use Standby ip
10.0.1.252 (vlan-1)
10.0.2.252 (vlan-2)
10.0.3.252 (vlan-3)
10.0.4.252 (vlan-4)
10.0.6.252 (vlan-6).....so on.
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Jul 13, 2012
I have configured HSRP with InterVlan routing. All communication is flowing properly between the vlan's on Router A but when I test failover to Router B I cant ping ANYWHERE. I cannot ping any of the VLANS.
Also, From the primary router I cannot ping any of the interfaces on the secondary router.
I have 2 Cisco 1921 Routers configured for HSRP. Both the G0/1 ports plug into a Cisco 2960S 48 port POE switch (STACKED) (port 1 and port 2 which are trunked and allowing all vlans to pass through. And both of the G0/0 ports are plugged into a Cisco ASA5510.
I have attached a diagram of the setup and the interface configs of the routers.
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Feb 26, 2012
I am at a client that I upgrade from running a single 4507 to two Nexus 5548UP switches with two Nexus 2224 fex's connected. The other access layer switches are 2960S switches. I implemented hsrp on the nexus 5k's for redudancy. The issue they are having is that some networks cannot communicate with each other. All user vlans can communicate with the server vlan, but it is not running hsrp on the vlan interface (there is a reason for that, but it not relavent for this issue). The phone vlan, which is running hsrp, can communicate with all networks.
When I am connected to either 5k, they can communicate with all devices on all networks. However, I am on vlan 10, which is a user vlan. I can communicate fine with the server vlan (vlan 101 - not running hsrp) and the phone vlan (vlan 60 - running hsrp). I cannot communicate with vlan 30 or 40, which are both running hsrp. This makes absolutely no sense at all to me. I checked out trunk ports to be sure that vlans are allowed across the networks as well. There are no firewalls between the vlans or ACL's.
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Aug 21, 2012
We have an OSPF network with four 6500 Distribution Switches. They are fully meshed and see each other as peers and are sharing routes. Off of one pair (Border) there is a setup of 3750G siwtches that go off to another network and they do not run OSPF. Between the Border Dist and the 3750G Switches we run HSRP. The 3750G side uses HSRP GP 192 and the Dist Side uses HSRP 192.There are static routes on the 3750G pointing to the Dist HSRP address to get back to network.Pings fail from the OSPF side to the HSRP address on the 3750G side.If I do a trace from the OSPF side to the HSRP address it hits one border dist switch then the other and fails.If I have static routes on both border dist switches pointing to the HSRP on the 3750side, do we need to change the metric on one dist so that it is preferred over the other or should the router Id take care of that?
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Nov 16, 2011
I have router connected to 2 3550 switches directly. 3550A and B switches are running HSRP. OSPF is running between Router and 2 switches.
From Switch B i can ping the Router Wan interface but not the internet sites. from Switch A i can ping any sites?
Switch B
3550SMIB# sh ip routeCodes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1
[Code]......
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Aug 5, 2012
I found that there is no force-switchover command under redundancy configuration mode. How can I do a switchover from primary RSP720 to secondary RSP720?
I am using SSO and NSF.
C7609-2(config)#do sh redundancy
Redundant System Information :
------------------------------
Available system uptime = 1 hour, 51 minutes
[Code]....
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Jun 20, 2012
I am in the process of testing VA5(1.2) version of ACE on ACE4710 appliance.I did redundnacy configuration and it is working fine.I have done the snmp configuration and SNMP trap receiver is able to recieve traps like link up/down, so it proves that SNMP configuration is working fine, but i am not able to generate the SNMP trap notification for "clrRedundancyStateChange".I tried two things:
1) Via CLI, ran the command "ft switchover all" and i could see redundancy state changes.
2) Powered down Active 4710 appliance and standby ACE 4710 appliance taking over as Active.
However, none of the above could generate the trap clrRedundancyStateChange. how this trap can be generated? In snmp-server enable traps commands doesn't have any option for enabling FT related traps.
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Feb 14, 2012
I'm having WIFI connection issues with a Sony Vaio VGN-FW140E Laptop. After a connection is established it will randomly stop working.The network adapter is a Intel WiFi Link 5100 AGN using driver version 14.3.0.6,I have also tested the connection with a Cisco Valet AM10 WIFI USB adapter and received the same results.All other devices connected wirelessly are not experiencing any connection problems.
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May 10, 2012
I have a D-LINK DIR-300 router with 4 LAN and WI-FI. It's acting very strange lately. It is connected to a UPS battery and the one LAN connection is in surge protection.Here are the symptoms:
-Every 2 days it just loses connection. I have to reboot it so to make the connection working. It's a little bit annoying after awhile.
- One day one of the LEDs started like fading away and came back up (the one that signals the LAN connection).
- When all the LEDs were properly working and the connection was good also, I moved the the power adapter cord a little bit at some part (I didn't plugged it out) and some of the LEDs gone (Internet connection LED and Wireless) but all the other LEDs were working. Of course there wasn't connection either.my OP is Ubuntu 12.04 and the connection DHCP is well configured.
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Jun 9, 2012
I've got a new PC which is now about 4-5 weeks old. It worked great in the first 2-3 weeks, but then the network connection started to be unstable. That means that the connection is lost regularly (in intervals between 15 seconds an several minutes). After it is lost there's an immediate reconnection attempt, which usually is successful. So the connection downtime is mostly inbetween 2-10 seconds. Now that does bother me pretty badly. Especially in online games this leads to many disconnects or lagspikes of up to 10 seconds.
The connection losses always come paired with DPC latency spikes.I switched the LAN cable just to be sure. I updated all drivers (including BIOS). I deactivated all eligible components in the device manager one by one. The only thing I found out: If I disable the network adapter, the latency spikes are gone. But that doesn't work because the connection is gone too. For that network adapter I tried different drivers, various versions from Shuttle and also the latest original driver by Realtek.
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Dec 26, 2011
I have a D-Link DIR-615 Hardware Version: E3 Firmware Version: 5.10 and I am using this as an access point with the DHCP disabled (secondary router) and my primary router is located down stairs and it is also a DIR-615 Hardware Version: B2 (192.168.0.1) and this issue didn�t develop until later over time and I have made absolutely no network configuration or ISP changes at all the internet has been working fine confirmed with Time Warner Cable and for more than six months and I out the DIR-615 Hardware Version: E3 Firmware Version: 5.10 router has been bringing down the entire network/internet access and I can confirm this router is causing the network/internet to go down and windows notification will say the network only has limited access and I am also unable to access the router page (192.168.0.2) state I have to remove it and restart it D-Link can take a look into this issue I believe this might be a bug and I confirmed on the website that this is the latest version.
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Sep 24, 2011
I Just got FIOS internet at Home with 43 Mbps down and 32 up (measured speed). I replaced the included router with my old reliable RV042 (V1) VPN router that I used with my old service in NY LI. This has been working very stable for week or two, but I use my old 042 to remote desktop via VPN from my work, that was limited to maybe 9-10 Mbps (Home to office) way down from the 32 up I have now (the office has 80Mbps down). So I researched that the RV220W had a VPN speed that was much faster and I ordered one that I am trying this weekend.Out of the box, I plugged accessed and just clone the MAC at the WAN port to match the replaced FIOS router. Power cycle and surprise, no IP from FIOS!. After trying a number of things, I gave up and updated the firmware to the last 1.0.2.4, and that fixed this. I still need to clone the MAC to void calling Verizon FIOS, but at least I get IPs and Internet with no trouble.Next, I configured a couple forwards for two web servers. I found about the bug in this same forum and just used the rules instead. Working good so far.
So now I test WAN bandwidths, and I found all kind of trouble. With the old RV042 and similarly to the included Verizon router I can do steadily 43d/32u. Especially at night is quite stable in these numbers. When I went and move the cables to the RV220W (exact same set up) the speed went all over the map from 4d/8u to 43d/25u. If I power cycle the box, things tend to be stable again around 43d/25u. So, after a while being stable in these numbers I start trying things to improve the 25u that should be around 32u, and recover the missing 7 mbps. Not much I can think, so I just randomly enabled the QoS settings trying to reserve full BW for my tests, and I found just that enabling WAN QoS, and nothing else, no profiles or changes in the Priority Settings, I go up to 30u consistently over a number of tests. This do not affect the down speed that is stable at 43 mbps. The surprising thing, is why this affect to the up speed when nothing else is going on in my network? and also where are the other 2 Mbps to complete the 32 Mbps that I can do with the RV042 (V1) or the cheap included router? In my opinion, if I don't use QoS, I should get full bandwidth to whatever application/computer that requests so, period.
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Jul 19, 2011
I have had this wireless router for 3.5-4 months, and it has been working fine up until now.It either runs VERY slow and losses connection often or will not connect at all. I could be sitting beside the router or across the room with the same results. i have even tried connecting a cord from the laptop to the router, but it makes no difference. If it makes any difference we have a PS3 that is connected via wire to the modem and it works just fine, never loses connection. We have used both at the same time since we got it and it was fine up until a few weeks ago.I have tried reseting it and unplugging everything and rebooting the computer and that had no effect. I also tried reinstalling the router on the computer using the setup disk and resetting everything but that did not do anything either. I have an Acer Aspire laptop MTS ~ DSL Modem?
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Dec 25, 2012
Region : Others
Model : TL-WR941ND
Hardware Version : V3
Firmware Version :
ISP :
I have two(2) WR941ND routers working at my home. The primary has IP : 192.168.1.2 , this primary router is working as an Acess Point, DHCP is OFF, and no wireless security activated. This primary router is connected to a DSL modem+router and DHCP is activated on it.For the secondary router I configred 192.168.1.100 . On the secondary router I have activated WDS function as well as Wireless Security (WPA2) , DHCP is Off on it. This secondary router is to work as wireless bridge + Access Point. You will understand that this secondary router is wirelessly connected to the primary one.I am able to configure all, and all things work correctly for few days at a time.But if at any time the secondary router is switched OFF, and then again switched ON, it seems to have lost al the settings and its IPs, and thus unable to connect to primary router. At such time I am unable to locate /connect my laptop to this secondary router, and it keeps on searching & searching.
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Nov 4, 2011
I have a net gear WNR2000vs with the latest firmfware to date.wired devices connected: 1. my pc 2. xbox, and also one wireless device connected to my cell phone via wi fi.
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Jul 29, 2012
I have a Linksys Wireless-N Home Router, WRT120N to be exact, and I have been having problems with my wireless. My wifi losses internet connection intermittently. This does not happen when I am connected directly to the router with a Ethernet cable. I have redone all the settings many times(like 6) and Im still having the same problem.
I really dont want to have to buy a new router
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Mar 27, 2012
Have a ZyXEL 600 wireless router - it has worked without issues for years.However yesterday evening my wireless router suddenly stopped broadcasting a signal. 2 different PC's and a wifi dongle attached to our TV were suddenly all unable to find my network.The WLAN light on the router was still lit up. I connected my Acer Aspire 5742Z laptop to the router via an ethernet cable and it worked fine. I connected to the router and it said there were no errors.
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Aug 6, 2011
I need to know why I am losing internet connectivity like around nighttime, late. I keep losing internet on both IPv4 and IPv6! It both said "No Internet Access" Then later IPv6 said "No Network Access" That's the problem i am having on my personal laptop computer. I really am furious that I lost internet connection around 12:15, 12:30, 12:50, 1:30, 2:15, 2:30, and 3:30 A.M. i suddenly lost internet right there. And I heard the internet crew shuts down the internet system every nighttime and fixing it. I want to know why they need to fix it, how long will the repairs last ?
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Nov 6, 2011
Every now and then my adapter won't be able to connect to the internet for a few minutes, and then it just comes back. This happens frequently, varying from every few minutes to every few hours. If I re-connect the adapter, though, a connection instantly comes back. There's no sign that it's lost connection, the taskbar still displays Internet access and a 5 bars, and the blue light on the adapting keeps flashing; but I just can't connect to the iternet at all.
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Oct 20, 2011
wireless connection stop working and icon lossed on hp laptop dv 2000
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Feb 29, 2012
I have a Cisco 4503 with a supervisor 6 engine. I want to create a trunk between the router and a switch. when I do :
switch port mode ? Access
Dot1q-Tunnel
Dynamic
Private-v lan
Trunk
I thought I should see :
switch port mode encapsulation dot1q
switch port mode trunk
Am I missing something I do not see where I set the encapsulation.
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Oct 4, 2012
I have a doubt regarding MIBs. I dowloads the MIBs for Cisco 4503 for a specific IOS. But the folder is divided by v1 and v2.
What does it mean v1 and v2? The version of SNMP?
So if I enable just SNMP Trap (''snmp-server enable traps.....'') I should use MIBs v1 but if I enable also the number of Retries and Timeout ( ''snmp-server inform retries...'' and ''snmp-server inform timeout...'') I sould use MIBs v2.
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Mar 21, 2011
installing IOS for cisco 4503 e catalyst switch. The base ios image file has been deleted. Installing the ios and from where can I download the ios verison.The device has 2 10 Gig uplinks and I have access to console of the device.when i boot up the device it comes "rommom >"I do have tftp server and i have also configure the IP in fast ethternet mgmt port.
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Jan 18, 2012
There is some way to increase the speed of changing the interface state from DOWN to UP when the cable is connected. I need to configure a port of Cisco 4503 in a way that when a cable is connected the port goes immediatly UP.
A solution can be to keep Cisco interface always UP and I remember that with "no keepalive" command to the interface configuration it was possible. But I tried and nothing happens.
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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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Oct 16, 2011
just got a new supervisor 4 engine for this catalyst 4503 switch that has ios 12.2 (53) SG installed on it. That's quite a bit above the 7.6 i was working with. I'm having a couple issues now. first, I read that it is supposed to be sending out broadcasts automatically to get it's IP address but it doesn't seem to be. the module i'm plugging into there is ws-x4448-gb-rj45, a 48 port 10/100/1000 module in case it matters. it works other than that. I can plug two computers in and see them and i can plug the network in and they'll both get addresses and internet, but i need an IP on the switch. is there a way to send a manual request for broadcast out or somehow set the IP manually? (I know I can do it in the rommon, but that doesn't seem to do anything)
also, the last module in the switch is a 24 port poe ws-x4224-rj45v. the module is recognized, the status light green, the "show interface status" lists it, but it doesn't recognize anything plugged into it. the supervisor is not configured at all yet, so maybe that has something to do with it, but the other module, like i said, works.
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Sep 16, 2012
I need to implement over an ethernet link L2 tunnel because I want to isolate another VLANs domain.On the first side I can use the command : sw mo dot1q-tunnel on a new C4503 on the other side I cannot configure the command : sw mo dot1q-tunnel.
the other side is an old C4503 we upgrade the flash with a compact flash to upgrade to a new IOS v15 but the command doesn't exist also.I red the cisco feature navigator feature and I am sure the dot1Q-tunnel is available on my image : cat4500-ipbasek9-mz.150-2.SG.binso I don't know why I can use it.
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Mar 4, 2012
i'm performing configuration PBR on catalyst 4503, but it doesn't work. [code]
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Feb 9, 2013
We have microsoft servers and other application servers (around 12 in nos) which should have gig connections to the access switch. In turn this access switch will be connected to our distribution switch 4503. Which model of access switch best fits from the below 3 models. It should be cost effective as well.
WS-C2960 S-24PS-L
WS-C2960-24TS-L
WS-C3560G-24TS-S
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Jan 11, 2012
I am installing a connection between Brocade MLX and Cisco 4503 using SE and SVI's. Below is the config for each. Am I missing anything like MTU Ignore or something along that nature?
*** Cisco 4503 (v15.01) Config ***
VLAN 35
name EOC_Gi1/2
[Code].....
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Sep 2, 2012
I am trying to connect a 6509 switch to a 4503-E switch using single mode dark fiber over a distance of less than half a mile. Although a routine task, it does not work..We have a care 6509 switch where we concentrate all of our dark fiber connections for our remote sites. The 6509 switch already has 30 remote sites, most of them with 4503-E switches, connected in this way therefore it is a tested scenario. For the connections we use the GLC-LH-SM SFPs on both switches. Out of these 30 sites we had a similar problem with two of them, which we solved with the use of CWDM SFPs. With the CWDMs the fiber came up right away. However, I cannot keep using this solution because it is way too expensive! I had the losses of the fiber measured end-to-end and they are negligible (>0.5 dB).
In this latest case, like I said, we could not bring the connection up between the core 6509 switch and the 4503-E switch using the GLC-LH-SM SFPs. I then replaced the 4503-E switch with a 3560 and the link came up! Then I tried using a CWDM-SFP in the 4503-E, while keeping the GLC-LH-SM SFP in the 6509 and the link came alive again! Of course we already tried replacing the fiber patch cords with no luck. [code] I find it very weird for the link to work with the 3560 or with a CWDM in the 4503 but NOT with the SFP in the 4503!
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Jul 8, 2012
I have a 4503 switch (in L2 mode) running 12.1 hooked into a C2950 running 12.1, using regular 4 pair Cat5e cables to connect between them. The 4503 has Gigabit port 2/1 trunking to the 2950's Fa port 0/13.
When I set the duplex mode to DUPLEX FULL and SPEED to SPEED 100 on both switches (for their trunk ports) the link fails, and my 4503 loses connectivity (since it gets it from the 2950).
Here is my config from the switches (per description):
The 4503:
interface GigabitEthernet2/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,2,100-140
[Code].....
Note, this is the only mode that works (which seems to work fine, but I get TERRIBLE throughput for anything that goes over the 2950.
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