Cisco Switching/Routing :: How Many Route Entries 2821 Or 881 Router Can Support

May 21, 2012

One of our client wants to know "How many route entries a 2821 router or 881 router can support" Such as the 3750 can support 11k routes in ‘desktop routing’ mode. But I want to know the limitations on routers.

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Cisco Switching/Routing :: How Many Route Entries Does 3945E Or/and 3900 ISR G2 Support

Dec 1, 2011

I have a question concerning about how many ospf and bgp route entries does 3945E isr g2 router support?

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Cisco Firewall :: How Many Route Entries Can ASA5520 (8.2.1-k8) Support

Sep 24, 2011

how many route entries can ASA5520 (8.2.1-k8) support?

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Cisco Switching/Routing :: 5500 ARP Entries And Support For VMs?

Jul 15, 2012

How many VMs can a pair of 5548s support? Remember, for each VM, I will have an ARP entry in the 5500 ARP Table (assume 5500 is the L3 default gateway).

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Cisco WAN :: 2821 Router Support BFD For Dynamic Routing Protocols

Jul 18, 2011

Any list of dynamic protocols that support BFD, 2821 router support for BFD dynamic routing protocols

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Cisco WAN :: Routing Table Entries Support On 1921 / K9?

Nov 27, 2012

Is there a Table which the list the route table entries on Cisco ISR Router especially ISR 1921 Router.

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Cisco Switching/Routing :: Route-map Command Support On Switch 3550?

Sep 30, 2012

I have cisco switch 3550 IOS Version 12.1(19)EA1c.   
I can configure route-map commands on that.  but i can not apply that into any vlan interface.   while i try to apply the following command ( ip policy route-map PBR) on VLAN int i get an error msg saying that the command is not recognized.

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Linksys Wireless Router :: How Many Port Forwarding Entries Does WRT310N Support

Dec 13, 2011

I want to upgrade my router but I need a router that supports more port forwarding entries for my applications.  I have my eye on the WRT310N router but I need to know how big its port forwarding table is.

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Cisco WAN :: Can WIC-2T Support 4 Mbps On 2821 Router

Dec 13, 2010

Support for WIC-2T , we have one 2821 router with wic-2t currently serial link is running with 2mbps and we want to update with 4 mbps

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Cisco Switching/Routing :: 2821 Router Hangs And Reboot

Nov 13, 2012

Yesterday my router was hangs and my services was stuck. I start the router hard booted and it works fine.This was second time i was facing this kind of scenario. The attached are the "show tech support" of the cisco router 2821.

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Cisco Switching/Routing :: Possible Load Balancing On 2821 Router?

Apr 15, 2012

I have a 2821 Router, with a VWIC2-2MFT card in it, with two T1s going into that card.  The two T1s are a bundled MPLS line.
I then have a cable modem connection going into the gigabit Ethernet GE 0/1 port on the router.
Right now, the cable modem provides a backup connection in case the T1s go down.
What I was wondering is if there was a way to 'combine' the bandwidth from the two T1s with the cable modem?

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Cisco Switching/Routing :: Upgrading Fans On 2821 Router

Apr 3, 2012

Basically I run 3 voice gateways on 2821 routers. In two of my routers I've had fan failures, one router has had two fans die and one has had just the one.
I was going to buy the offical Cisco fan replacement kit but then I thought with such as high failure rate I'd rather buy something else and better guarentee the service to my call centres.
So, what i'm asking is:
- Is there any reason why I cannot procure a standard 80mm 12V fan with a better rating (cooling and reliability) and install this in my 2821's?
I understand this may invalidate any warranties but mine have long expired.

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Cisco Switching/Routing :: How To Configure Dual ISP On Router 2821

Mar 17, 2013

I've 3 interfaces on router:

Gb0/0-ISP01 with DHCP client
Gb0/1-ISP02 Static IP 192.168.2.x/24 
Fa0/0 - LAN
I want to know, how to configure:1. Set the IP of interface Gb0/0 as dhcp client from ISP01 and make it as default route.
2. How to configure the ip nat.....overload?
3. How to use the ip sla to monitor internet connectivity to for ISP01, if it fails, to go to ISP02.

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Cisco Switching/Routing :: 2821 - Router High CPU Utilization?

Sep 25, 2012

We've got Cisco 2821 for our 90mb/s Internet Access. Its CPU usage is around 80%. Show process cpu does not show any cpu proccess with high utilization. But we have got plenty of policing configured for our clients using policy maps. Can this policing affect cpu usage?

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Cisco Switching/Routing :: Netflow Configuration On 2821 Router?

May 5, 2013

I have  customer that we have configured netflow on the 2821 router that their traffic is on.  Currently the company they have contracted with for the analysis is seeing data duplication.  Below is the configuration for the interface and the router
Cisco 2821;
interface GigabitEthernet0/0
description TVC-FI-Ethernet-Fiber-Ethernet link
ip address secondary
ip address secondary
ip address secondary


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Cisco Switching/Routing :: ME3400 Limited CDP Entries

Apr 4, 2013

I have the ME3400 deployed in an the following design. 8 100Meg ports connects to Cisco 2955s, and the 1Gig port uplinks to a Cisco 3560. My CDP neighbour table only shows an entries for the uplink Gig port. If I look at the CDP stats in the show cdp Interfaces Fastethernet 0/1,, I see CDP packets being sent every 60, but nothing returning.

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Cisco Switching/Routing :: Bandwidth Limit On Specific Services In 2821 Router

Feb 22, 2013

I have a cisco 2821 router where as a cisco 2960 switch with connect on router as a trunk & one user vlan . this is my WAN router all traffic are internal . i have 2MB data connectivity on my  WAN side. i  have to Give a specific Bandwith on my SAP  traffice . like when SAP traffice will come they all time get around 50 % bandwidth of my channel. If SAP resuest are not comming then other traffice will get full bandwith .

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Cisco Switching/Routing :: Get Fiber Optic Modules For 2821 Series Router

Mar 20, 2012

How to get fiber optic modules for Cisco 2821 series router. I can not find anything apart a SFP module which contains only one SFP port.

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Cisco Switching/Routing :: 2821 - Router VPN Client Split Tunnel Is Not Working

Mar 14, 2013

i've configured Cisco VPN CLient on a router 2821, and it is working fine.I could access inside resourses normally>the problem is that when i connect with VPN i lost connectivity to internet? What is wrong with my configuration? Below the running config of the router.
CISCO2821#sh run
Building configuration... 
Current configuration : 5834 bytes
version 12.4


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Cisco Switching/Routing :: Additional Ethernet Switch Port For 2821 Router

Dec 18, 2012

I have a 2821 router and need to add another Ethernet port.
However, all the Ethernet modules seem to be End of Sale and the suggested replacements are only compatible with the ISRg2 range.

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Cisco Switching/Routing :: Stale ARP Entries On 6500 Running IOS?

Sep 11, 2007

On occasion I will have to clear the ARP cache on a 6500 when a customer swapeeds out a firewall or firewall NIC.  The ARP cache will show the MAC of the previous device and will not update until either the ARP table refreshes dynamically (currenty at default time) or it is cleared manually.
Sometimes I need to clear it manually and sometimes is is refreshed dynamically when the new device comes up.  Inconsistant issue.... 
Under what circimstances will an ARP entry NOT be refreshed when a firewall or firewall NIC is swapped out.  

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Cisco Switching/Routing :: 6509 - Maximum ARP Entries On Sup720?

Jan 13, 2008

Just a very quick one.  Is there any physical limitation to how many ARP entries a 6509 and sup720 can have?

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Cisco Switching/Routing :: Clarification On ARP 1700 Received More Than 30 Entries

Apr 15, 2013

As a matter of fact i am new to this field .I have cisco 1700 series router which has ea0 and FE 0 port
E0 connected to LAN and FA0 for ISP ,both are configured wit publisc ip.and ststic route to ISP. (E0 connected to switch and fa0 connected to ISP MUX)
When i issued sho arp command i have received  more than 30 entries of  MAC and IP  address . I am wondering how i received this much mac in arp table.

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Cisco WAN :: 2821 / Route FTP Down One T1 And All Other TCP Traffic Down Another T1

Apr 19, 2010

I have a 2821 router with two T1 WICs and have the need to route FTP down one T1 and all other TCP traffic down another T1. All traffic is going to the same remote IP address. The remote sites are in different states, and I assume that the remote subnet is being bridged between the states. It's kind of a weird set up, but it's not my design.
Anyway, can I use a route map to split off FTP traffic to host A and send it down one T1 and have the rest of the IP traffic to host A go down the other T1?  I also need to be able to have all traffic use one T1 in case the other T1 goes down.
My first thought was to static all IP down T1-1, then route map FTP traffic down T1-2, then have a floating static for all IP traffic down T1-2 with a higher metric. But something would have to track the T1 interfaces and I'm not sure if route maps or static routes can do that.  Any thoughts on this?

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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


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Cisco Switching/Routing :: When Connect Router 2821 Through Console / Get Error Message At Regular Interval Of Time

Feb 9, 2013

When  i connect  the Router   2821   through  the  Consol   get  error  message  at  regular  interval  of  time  %ENVMON-4-FAN_LOW_RPM: Fan 1 service recommended.

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Cisco Switching/Routing :: 891 Router Secondary Ip Route

May 22, 2013

I have an MPLS network router(Router1) and an internet router(Internet1) at a site of mine(Site1). the MPLS router sends all unknown traffic out the internet router. Router1 is the default gateway for all hosts and directs the traffic.I also have another network at an alternate site (Site2) on the same mpls network also with an internet egress. It is composed of an MPLS router (router2) and an internet router (Internet2).I would like Router1 to send internet bound traffic out Internet2 if Internet1 is down. Basically the statement on Router1 for the unknown traffice is ip route have never heard of IP SLA before but it seems to be the best method for this situation.

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Cisco VPN :: 2821 - IOS Support For Both Voice And VPN

Nov 6, 2012

I have one 2821 router. Which ios will support both voice and vpn?

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Cisco Switching/Routing :: 2821 Periodically Stops Routing All Traffic

Oct 3, 2010

We've got a cisco 2821 router which periodically stops routing all traffic. It seems to happen about once every 2 weeks, and I can't find anything that could be causing it. There are no entries in the log and the router stays up and running but requires a restart to begin processing traffic again. We're running 12.4(13r)T11.Any thoughts, or troubleshooting steps to track this down?

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Cisco Switching/Routing :: 2821 Multicast Routing Relay Basic

Mar 12, 2013

I  start configuring Cisco 2821 router for multicast . First short  description and attached sheme explanation. Let we say  I have small  network with 100 users. One router and Cisco switch 3560. Two VLAN’s,  one for data another for multicast. Data from internet works fine but  now I want to connect multicast servers (or source of more multicast  streams) from another subnet. Router have three interfaces.I expect there should be no problems with multicast configuration, but unfortunately it is not like I expect. What I did ?

First step:  enable multicast routing

Second step: on both interfaces (Fe 0/1 and Fe 0/2)  - ip pim sparse-mode

Third step: configure switch that users are connected to access port in VLAN 222 (temporary to see if multicast work)
When  I start VLC on computer nothing happend. If I try to connect computer  on same subnet where is source of multicast streams it works fine.What  I am doing wrong ? Is there anything about routing ? All subnets are  directly connected. RP is not needed if I have one router or ?

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Cisco Switching/Routing :: 2821 Inter-Vlan Routing And IP NAT To ISP?

Jun 25, 2012

I have just bought myself a Cisco 2821 ISR.At present in my home I have a Cisco 2621XM. Fast Ethernet 0/0 is connected to a 3524XL as a trunk to provide my LAN with inter-vlan routing. it works great. Fast Ethernet 0/1 is connected to my ISP's cable modem and uses the command "Ip address dhcp" to get an IP and all other info from my ISP.FA 0/1 is Ip nat outside and the FA 0/0 and all sub interface like 0/0.1 .24 .168 etc all ip nat inside.I get intervlan routing and access to the internet via this router.I have this 2821 to replace the 2621XM as I plan to run CME on it and want gigabit routing on my vlans as at the moment on the 2621 routing between vlans it at half duplex or seems to be.I have configured the 2821 to ip nat outside on  gig 0/0 and ip nat inside on gig 0/1 and all of the sub interfaces (same setup as my 2621 but with gig ethernet)I have no access to the internet at all but I can ping and other domain names from the terminal session when I am connected to the 2821 via the console or telnet/SSH. the gig 0/0 has an IP assigned from my ISP too but no other nodes on the network can ping outside.Am I missing something here? the version of IOS is V 15.
My access list goes someting like
access-list 1 permit
access-list 1 permit
access-list 100 permit ip any
access-list 100 permit ip any
 and so on
I still cannot access the internet.....

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Cisco Switching/Routing :: Unable To Delete Static Route 1811w Router

Nov 23, 2012

On 1811W  Router i have OSPF running and i do not need this static route.ip route,when i try to delete i get error ,1811w#,config t,Enter configuration commands, one per line.  End with CNTL/Z.,1811w(config)#no ip route,%No matching route to delete,1811w(config)#.

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Cisco WAN :: Configure 2821 To Support 4G / LTE Backup Circuit

Apr 17, 2012

how to configure the 2nd WAN port to support 4G/LTE connectivity that will serve as the backup circuit to the primary MPLS circuit?

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