Cisco WAN :: Drop And Insert Different From 2811 To 2911
Sep 11, 2012
I have a working configuration with a 2811 router at my remote site in which I take the T1 (point-to-point PRI) into port 0/0/0 on the dual-port vwic2-mft-t1/e1 card. Then I plug my PBX into the 0/0/1 port. I channelize the T1 so 1/2 of the channels are used for data (13-24) and channels 1-8 are passed through the vwic2 to the PBX. I'm using the connect tdm t1 0/0/0 0 t1 0/0/1 0 command to pass the voice calls through to the PBX.
I tried to upgrade the router to a 2911 with the same card and the same configuration copied and pasted over and as soon as I put the connect tdm t1 0/0/0 0 t1 0/0/1 0 statement in, I drop the data side of the T1 and lose my connection to the WAN. If I take the command back out, the WAN still doesn't come back up until I reboot the router.
Has the syntax changed? I have a case open with TAC but so far no luck, as they can't seem to figure out which group should take this case, voice or data..
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Jan 30, 2013
I have a problem with configuring of my vwic3-2mft-t1/e1 card on Cisco 2821 router. I need drop some raw data timeslots from E1 frame and then insert them into frame on other port. I enter the following commands:
card type e1 0 0
controller e1 0/0/0
tdm-group 0 timeslots 1-4
clock source line
controller e1 0/0/1
tdm-group 2 timeslots 1-4
[code]....
I find these commands in Cisco 1 and 2-port T1/E1 Multiflex Voice/WAN Interface Cards for the Cisco 1700 Series Router configuration guide for vwic2 cards.But this config is not working properly. show connect output is showing status of connection "UP", show controller e1 shows no errors on both e1 ports, but data not flows between ports.What am I doing wrong? Have vwic3 and vwic2 cards different configuration procedures or not?
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Feb 13, 2011
Putting in a 1Gbps private Ethernet link between 2 sites. Currently have 2 2811's at each location, don't think that will cut it.
I was going to get 2 2911's, but looking at the docs it looks like they can only do 180mbps of throughput? Am I way out of my league here?
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Dec 11, 2012
We have CISCO2811 model with VWIC2-2MFT-T1/E1 module working good over the E1 line. Since it's getting hard to find new model of CISCO2811 we decided to connect new branches with CISCO2911/K9 model (according to migration doc)
My question is can we use 2811's old config file with the 2911 model directly?
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Aug 20, 2011
I have recently purchased 2911 routers running 15.1 to replicate a system I had implemented using 2811 routers running 12.4 a few years ago. None of my applications and servers have changed, but trying to determine why my router access-list on my serial links are not behaving the same. I don't keep up with Cisco changes.
On my original system, which is a private network that distributes a lot of udp broadcast and multicast data to remote sites over 64k serial lines, I manage some of the udp broadcast data using access-lists. When I check on my 2811-based system, "show ip access-list" shows a nice distribution of filter hits showing my expected deny/permit access-list entries working as expected allowing me to filter the particular udp broadcast ports of interest on the various serial interfaces.
On my 2911 based system, with most other elements the same, the access-list is not working correctly, and I see data getting through the access control to the other side of the serial link. Using tcp dump and other tools on the remote systems my routers attach to, it looks like the access control is basically ignored... though if I "shutdown / no shutdown" the serial link between the routers, it definitely stops and restarts the flow of data, so I know data is traveling over that interface... when I run "show ip access-list" on the 2911, I see tons of hits on one deny filter, and the last "ip permit any any" filter, but other deny udp any any eq XXX port filters are simply not registering denies.. which should be triggering since I see my server sending the data, and my client systems receiving the extra data I am supposed to be filtering on the router...
Is there potentially a new feature or command set option that I am missing to correctly filter outbound data from my serial links?
On 2811 w/ an
HWIC 4A/S int s0/0/0
ip access-group sample1 out
ip access-list extended sample1
{code]...
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Nov 13, 2012
We are using an ACE engine module(ACE20-MOD-K9) provide loading balancing service for two WEB servers and configured cookie for stickness. Below is the current configuration and it seems working fine now.
The problem I was facing is before use parameter-map change the http header length to 8k the stickness doesn't really working properly. User complains that their working session constantly be kicked out and redirect them to login page. By tracing traffic from a client we found that sometime ACE fails or stop insert the configured cookie, after increase the header length ACE start getting work.
how does the header length setup effect ACE to insert a cookie? Will the cookie insert attmpt fail if the header is longer then the maximum length configured on ACE? [code]
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Nov 22, 2012
I'm living in a student flat, where each student has his own room.Every room has an LAN outlet in the wall on which he is able to connect 1 device.If you like to connect more devices, we are advised to utilize a router.Our ISP gives us the right to only use 1 MAC-adress (for safety reasons), so there the router comes into play.I have a Belkin G+ wireless router on which i would like to connect my phone and laptop by a wireless configuration and my TV (Toshiba 40TL933) by wire.My laptop and phone work like a charm.When i insert my TV to the network, the whole thing collapses.My ISP provided me with the information that i connected 2 MAC-adresses and therefore, i was cut off.This would be because of the fact that belkin routers (apparently) are notorious for providing more than 1 MAC adres.When i asked for the MAC-addresses, they gave me back these 2: * 00:00:00:00:00:00 * 00:17:3f:0d:77:f5The second one is from my Router.But where does the 00.00. etc come from?
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Jan 9, 2013
I have an ACE version A5.2 configured in one-armed leg (doing source nat). I have a requirement to add(or copy) the "referer" header value from the original request to the request send by ACE.
I cannot figure out how to copy this value. It is easy to add the source ip address by adding: " insert-http x-forwarded-for header-value "%is".
So how I am going to copy the Refere header?
#Referer
#Address (URI) of the resource from which the URI in the request was obtained
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May 5, 2013
We are using Cisco ACE 4710 to load balance servers. We have created VIP under the interface vlan using nat-pool command. Also, we have changed the gateway of the server to point to the ACE vlan ip address which is created using alias 10.x.x.x 255.x.x.x command under the interface vlan. In short ACE is in inline mode for the servers which needs to be load balanced.
[code]...
But still I am not able to view the original client IP. Just to add more, the site is a HTTPS site & we have not doing any kind of SSL offloading on the ACE, it is taken care by server itself
I just want to do the HTTP & HTTPS load balancing without SSL offloading & should be able to see the original client IP in the server logs
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Sep 26, 2011
I got a Cisco C880 router( IOS version: 15.1(2)T1 ) with PCEX-3G-HSPA-G card installed When I insert my 3G card and issue show cellular 0 network, I found that the network is not my 3G card ISP, may i ask how can I manual select the ISP?
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May 22, 2013
while the 3560 switch is running? Is it hot-pluggable?
WS-C3560X-48P is the switch and I would be adding a C3KX-PWR-1100WAC
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Sep 26, 2011
Is it possible to insert a Netgear wireless router b/g 108Mbs into a running 2008r2 network, making it a slave to allow wireless access?
At the moment the menu is only accessible thru 192.168.0.1, but I need to have it visible as a device subservient to 10.151.48.1? If this is possible, I can set it up to do a SSID broadcast for wireless access?
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Mar 28, 2012
I was trying to implement stickiness based on cookie. Server inserts a cookie and sends it to the browser. I learned from app team that this cookie is changing dynamically during the session, so stickiness based on server’s cookie doesn’t work.
Now I want to investigate into possibility of ACE to insert a cookie. My question is: ACE feature of “cookie insert”: does it add additional cookie into http header without removing server cookies or it deletes the cookie(s) that server put into http header and replaces them with its own cookie?
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Dec 25, 2011
I am having one router CISCO2911/K9 (Cisco 2911 w/3 GE,4 EHWIC,2 DSP,1 SM,256MB CF,512MB DRAM,IPB). But now my management asking me to upgrade this router as CISCO2911-SEC/K9.
What will be the BOM for this up gradation.
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Sep 15, 2012
As per CISCO QoS document URL, IOS from 12.2(13)T support drop command in policy map. But our CISCO ASR 1013 having IOS of Version 15.2(1)S1 doesn't have drop syntax.How can we drop specific application using QoS in ASR 1013 of IOS version 15.2 and higher?,Can I allow few users for a particular application (like P2P) and drop other users based on users source IP?
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May 22, 2012
I having a basic query in troubleshooting E1 link , here im facing packet drop in the link and we are testing by providing local loop and remote loop from the CSU/DSU at local point and at remote point . I have tried ping test while the loop is given at local point and remote point ie i have pinged my local serial interface IP address (eg 10.0.0.1 -local & 10.0.0.2 -remote ) in Remote Loop i could see no errors and drops and also the traffic on the interface output and input is the same(eg input rate 1000bps and output rate 1000bps) .My query is that when i am pinging the local interface IP does the icmp packet travels till the loop point and comes to the same interface(like a boomerang) .
ICMP packet
->->->->->->->->->->->->->->->
R1 Local CSU/DSU | Remote CSU/DSU (remote loop given )
O-----------O------------------------------O |--------------------------------------O R2
<-<-<-<-<-<-<-<-<-<-<-<-<-<-<-|
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May 8, 2013
We've had Cisco 1252 APs running on PoE (3750E gives the port 20W of power) for well over 3 years with no problems. These have not been touched, moved or configured since they went in.
All of sudden we're seeing these APs drop off the network and investigations reveal that they show as IEEE PD when you do a show power inline.
Some of these are slated to be replaced after the ports were changed, the cables replaced and port reset (also an old spare 1252 was inserted in to one of these ports and it came up fine, indicating an issue with these APs).
If it was one or two then maybe I could believe that the APs are at fault, but with so many (10 so far) I'm struggling to believe it. Could it be the code we are running on the switches? We are running 12.2(50)SE3.
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Jul 18, 2011
my Cisco anyconnect VPN clients are able to access all of my internal networks accept to another site which has a IPSEC VPN site-to-site. The Cisco ASA forwards the packets destined to this remote site to a Cisco router which NATS the source addresses (pool 10.17.252.0/24) to a 192.168.46.0 range. The remote network is 155.x.x.x which I have included in my internal subnets object-group and added a route on the ASA to route it inside.
I have configured NAT so that it does not NAT anything from the anyconnect client range to the internal subnets. I am using version 8.3(2) and the NAT rule is:
nat (outside,inside) source static SSLPOOL SSLPOOL destination static INSIDE_NETS INSIDE_NETS
I can still not connect to the remote side via the VPN; when I run this throught packet-tracer, I get a failure on phase 6:
Type: WEBVPN-SVC
Subtype: in
Result: DROP
Result:Drop reason: (acl-drop) Flow is denied by configured rule
I cant seem to work out what it is that is blocking it. The NAT rule above is rule 1 in case some other NAT rule is causing the issue..
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Apr 2, 2012
i see that the wifi on the SRP Freezes. If i am connected via lan, i can still surf the net or connect to another access point on the network and surf. But the wiress devides connected to the SRP loose connectivity even though it shows that the wifi connection is connected. I am running on the latest firmware. this problem has started occcuring only recently
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Feb 4, 2013
IXIA----DUT-----IXIA
| | |
|_______ |________|
DUT has redudant connections to IXIA. Im pumping traffic from IXIA and traffic takes PATH A .. When I shut PATH A, i expect traffic to shift to PATH B within 100ms (example). How do I test this ?
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Nov 10, 2011
ASA 5510 running without issues for a while but we needed extra port so added a 4GE SSM.
Having installed the 4GE SSM we had some issues with the card not liking a connection to our switches and only working by plugging directly from the server into the firewall, not great as we wanted extra servers on the line in the future. So we upgraded the firmware and no are at an impasse.
We have upgraded to 8.0(4)3 and now we cannot get any traffic through the port, we can't even connect to an external DNS server. Running a packet trace I get an immediate error on the first step '(l2_acl) FP L2 rule drop', and it appears as though the outside connection is down.
I have some experience on setting up basic port forwarding and NAT for internet access, webservers, mail but this has thrown me.
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Jan 9, 2012
I verified that the VPN implemented between a static IP address and a dynamic IP address every time the GPRS router IP address change address, the VPN does not rise.
I attach the configuration implemented by ASA5505 dynamic side.How can I fix it?
: Saved
: Written by enable_15 at 06:45:34.029 UTC Sat Dec 3 2011
!
ASA Version 8.2(1)
!
hostname ASA2
[code]...
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Jan 12, 2012
I've recently just moved house and we got Virgin Media 50mgs broadband installed with their wireless super hub which is also a Netgear product.However I first noticed up in my room I have weak signal on my wireless devices I have my Dell laptop, xbox 360 and desktop pc with wifi card.I researched this and went out and bought a Netgear wireless extender:
[code]...
Now this does work it gives me excellent signal but it keeps dropping the connection which is extremely frustrating when playing the xbox or on an online game on the pc.I contacted Netgear and all they suggested was updating the firmware
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Jun 4, 2012
I currently have an issue with the wireless internet at home whilst watching videos, playing online games, completing homework etc... On the computers working over the wireless network there seems to be a randomly occurring drop out of the internet. My home network connection looks to be solid, but the internet drops out for around 5-10 seconds and then comes back.Here is a screenshot from Xirrus the wifi inspector program from the pc in my room connected via the network:[URL]The home network (Munasinghe and family) had a signal of -78 dBm.The second signal, Optus (name of ISP) wifi had a signal of -85 dBm. This signal value often decreases or disappears altogether.
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Jan 24, 2011
This is not a problem I would not have noticed save for starting to use Skype. Every 10 to 20 minutes, my internet drops out. This occurs whether my laptop is connected via LAN cable or wirelessly to the router. Skype drops down to one bar, then drops out, and tries repeatedly to redial, sometimes achieving a very scratchy voice call for several seconds before dropping out again. If you redial in 2 minutes, it is fine and achieves medium quality video calls. Whilst skype is floundering around, I can sometimes browse the internet, but sometimes it is offline. I have phoned my ISP and they claim no problems on their end. Beyond that I really don't know where to start on looking for the problem.
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Aug 4, 2012
Well while browsing net on my mobile/laptop suddenly the Wifi get disconnected. But the wifi of access point does not drops. Its connected to the router in which wifi drops.Also the net on my desktop connected to the router via ethernet cable, does not go offline. I re,ain connected to net via Desktop even when wifi drops.
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Feb 28, 2011
I had a Linksys Wireless-G router for a long time and had very good luck with it. However, I ended up getting a couple of Wireless-N devices and wanted to get a different router. I bought the Linksys E3000. I got it home and set it up, and at first it worked. Then it would all of a sudden drop everything connected to it. I would restart the router, and in short order it would drop all connections again. This completely baffled me for awhile, until I actually touched the bottom of the router, and it was quite hot. I had it laying flat on a a table, so I could never understand why it was getting so hot. Anyway...I stood it up on it's side and it worked for awhile. Then it would randomly drop various things connected to it. The last straw was when I was listening to internet on the Apple TV, while viewing the internet on my PC and it started dropping the connection every five minutes. Anyway, I have now hooked my Wireless-G Linksys back up and it is working great.
is Wireless-N even needed? I live in a small place, so I don't need it to reach a long distance, and I don't transfer a tremendous amount of date wirelessly, so that doesn't really matter. Should I even try to fix this router? I looked on the Linksys page and I am running the newest firmware.
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May 15, 2013
We have a Cisco 4400 WLC running version 7.0.220.0 and are experiencing clients randomly dropping both broadcast and multicast at the same time. This is not specific to one area of the site and the duration of the MC/Brodacast loss varies. These comms outages don’t happen on all the clients at once but usually affect one client at a time. After a few minutes or a few hours, the client will start receiving the multicast without user intervention.
The site has Cisco 1522 AP's that have rather interesting logs where the DTLS sends fatal errors, followed by CAPWAP going into discovery state. Not sure if this has the same affect or if that's a completely seperate issue.I was told it could be the GTK but I don't believe 7.0.220 has this feature even enabled. The clients are Cisco 3230 and Cisco 1310's. The clients are running version 12.4(25d)JA1 while the 3230 router is running version 12.4(24)T7. What supporting logs or configs need to be shared to better troubleshoot. This has been going on for quite some time and is frustrating the end user as multicast is essential to the operation.
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Oct 23, 2012
I have a 1841 router connected to an ISP (currently SDSL EFM 10Mbps through an ISP modem, the router and the model are connected with a FastEthernet interface). On another location I have a linux server.There is an ipsec tunnel (3des-sha esp) between the router and the linux server (actually done with a crypto mac).The router has a hierarchical QOS policy on the egress interface.When sending traffic from the network inside the router to the linux host without the ipsec tunnel, everything is working fine and throughput is correct.When sending traffic from the inside network to the linux host internal ip through the ipsec tunnel, some packets are lost and the traffic throughput decrease.When sending traffic through the tunnel in the reverse direction (from the linux host to the internal network), everything is fine.I looked at the QOS statistics and the dropped packets counters don't increase. I looked at the egress/ingress interface statistics and no packets dropped there.I lowered the MTU on the egress interface, but it didn't solve the problem. I played by sending various ping icmp packets size, but even small packets are sometimes lost.I tried to check the router CPU, but it seems relatively fine (<= 10%)I captured the traffic on both side, and I see the packets emitted, and then I can see that some of the esp packets of the corresponding side are not received, so it looks like the cisco router is the culprit. This 1841 router is running: 1841 Software (C1841-ADVIPSERVICESK9-M), Version 12.4(24)T4,How can I troubleshoot where and why those packets are lost?
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Feb 3, 2013
I have a Cisco RV120W router with 1.0.4.10 firmware. The router drop the internet connections, freeze/timeout in admin interface randomly. How can I determine that this is the router's fault, or if it's the switch / internet access is causing it?
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Mar 9, 2011
I am running ping between two Nexus 7018 over WAN link ,and I can see some set pattern of packet drop(7.40 % drop) with MTU size 1500.When I ping between my 6500 VSS pair and same Nexus 7018 over different SP WAN link on diffrent location , I am still getting same kind of packet drop (8% drop) with MTU 1500. Has any one else come across this issue with Nexus?
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Apr 16, 2012
I have a Cisco 871W that periodically will drop its signal. how to configure this for maximum reliability? I set it to use chanel 2462.
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Dec 14, 2011
here's my setup :
office 1 :
rv042 hw3
ISP:Obtain an IP automatically
office 2 :
rv042 hw3
ISP:PPPoE
VPN tunnel between both rv042, everything's fine but when i try to ssh from office 2 to an office 1's server, my connection drops.
When it drops, i can still ping pc in office 1, this is really strange!if i change the office 2 ISP to another provider (obtain an IP automatically) everything's ok !
i try to use another PPPoE ISP for office 2 and it's doing the same thing!I've also tried other rv042 in both locations with the same setup and it's doing the same thing, so it's not a router issue.
i've tried older firmware and it's doing the same thing, so it's not a firmware issue!
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