Cisco WAN :: Router 2921 Enough For BGP?
Oct 13, 2011
I need a router to connect to our ISP by BGP and in a future to a second ISP. Our ISP is going to provide us about 300.000 route entries by BGP. So router 2921 would be enough??? or should i go to a higher model?We are going to have 100Mbps with this ISP and probably in 3 months we'll have to double it. Also we'll need IPv6 support.I saw router performance [URL]f and it's has 480.000 PPS and 245 Mbps but for 64 bytes lenght packages. If the packets are bigger the throughput should be best I suppose... 1500 bytes about 5,5 Gbps. In the case you consider the model is sufficient, the flash or RAM should be increased?
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Feb 20, 2013
Is there a recommended number of GRE tunnels that Cisco 2921 ISR router with default configuration (512MB DDR2 ECC DRAM) can support?
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Jul 11, 2012
I am installing a security license on Cisco 2911 Router for the first time. It already has a temporary license installed on it which is expiring soon. Cisco has already mailed me the procedure for installation. I want to know if i need to uninstall the previous license before installing the new one.
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Apr 15, 2013
We recently acquire a cisco 2921/K9 router to interface 2 networks
Network 1 : 169.254.XXX.XXX/16 on GigabitEthernet0/0 interface
Network 2 : 192.168.1.XXX/24 on GigabitEthernet0/1 interface
On the network 1 side there is a multicast source (169.254.200.200 destination : 225.0.0.1) on the network 2 side there is 1 receiver which is not multicast capable(old) but i want it to receive the multicast stream for the moment we configure the ip multicast-routing and each interface each interface with ip pim sparse-dense-mode then configure the GigabitEthernet0/1 in order to join the multicast group (using ip igmp static-group 225.0.0.1) and wireshark confirm that the multicast stream on the network 2 side from 169.254.200.200 -> 225.0.0.1 of course the receiver don't the stream, but if i force a "multicast to unicast" process inside the router it shall be ok.. after many hour of internet browsing i found 2 solution :
- NAT, [URL]
- multicast service reflection (Cisco documentation)
The NAT example don't work ,what is the best way to do this task.
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May 19, 2013
I need to configure cisco router 2921 for snmp v3,
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Jun 27, 2011
I just purchased thie Cisco 2921 router and have all the configuration completed except the Firewall and NAT. We have 4 supnets at our location on the router each with a DHCP handed from the router to our network. Any examples for the Firewall and Nat configurations?
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Oct 2, 2012
We have a 2300 RPS with single 1150WAC power supply (C3K-PWR-1150WAC) which is connected to one 2921 Router. But it is not backing the rotuer.
Router 2921 running IOS
c2900-universalk9-mz.SPA.152-2.T1.bin
I am getting the following logs:
*** External Redundant Power Supply is present, but type is unknown or not supported.***
%ENVMON-1-POWER_WARNING: : RPS Online Insertion and Removal is not supported.
Do we required any configuration to be done on Router end.
Note: The RPS is backing 2960 Switch.
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Feb 25, 2013
I contact you due that I’m currently configuring a Router Cisco 2921 with an Etherswitch module. The specific inventory of Router Cisco 2921 is:
Router#show inventory,NAME: "CISCO2921/K9 chassis", DESCR: "CISCO2921/K9 chassis"
PID: CISCO2921/K9 , VID: V06 , SN: XXXXXXXXXXX
NAME: "High Speed WAN Interface Card - 1 Port Gigabit Ethernet on Slot 0 SubSlot 0", DESCR: "High Speed WAN Interface Card - 1 Port Gigabit Ethernet"
PID: HWIC-1GE-SFP , VID: V01 , SN: XXXXXXXXXXX"
[Code]....
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Jan 14, 2013
I have a Cisco 2921 Router,with 3 giga interfacesi have a leased line for the internet with a public ip address and i want to configure this router as NAT /PAT gateway, so that users in my network can ue the internet by the router,my wan interface is g0/0 - ip 122.xx.xx.xx lan is g 0/1 -- 192.168.1.1 /24 . i have tried doing nat once but i was not able to make the wan port up.using cisco CP when i test the interface it givves error and i dont get internet to my users.
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Oct 23, 2011
I have a trouble with PPTP VPN between Windows clients and Cisco 2921 router with RADIUS (IAS) authorization. When I try to connect to Cisco 2921 from Windows 7 using MS-CHAP v2 I receive error 778: it was not possible to verify the identity of server . Then I use PAP - everythig is OK. On Windows XP the same situation.
Cisco config:
version 15.0
service timestamps debug datetime msec
[Code].....
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Oct 2, 2011
I just got a brand new Cisco 2951 router that has built-in 3 gigabit interfaces cards. We want to add additonal 2 GE EHWIC-1GE-SFP-CU card to it. When it booted up and type show inventory, it did not detect the presence of the card. There was light on at the back of it. I have checked the compatibility on Cisco. The card is compatible with this router. Do we have to install the card with special instructions in order for the router to see it?
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Jun 5, 2012
I have installed a VWIC2-1MFT-G703 module into cisco 2921 router, I can verify the card by show inventory command. but in show run, I do not see the E1 controller card there. this card is used for TPG lease line for data only. Those card is compatible with new 2921 router? or need some extra command to bring it up?
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Sep 21, 2011
I am getting the following errow message while trying to create a VPN tunnel between an ASA5520 and a 2921 router. [code]
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Apr 4, 2011
i m planning to use the 2921 router for both mpls and internet connection , to 2 different isp also am planning to use bgp with a public providor independant
i m planning to buy sla for the mpls link
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May 16, 2012
I have one new cisco 2921 router but after first login into the new router . I have made some configuration but forget to change the default password . Now i am unable to login into the router after first log off but iam not able to recover password because the router don't have any external flash memory.
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Nov 13, 2012
If Cisco Router 2921 base load supports NAtting? I am looking to order a Router and want to make sure the new 2900 routers support Natting.
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Aug 28, 2012
I am configuring a vpn ipsec tunnel with cisco isr 2921 router and Watchguard edge 1250e. I have the watchguard configured so I just need to make sure I have everything setup on the cisco side. At this point, there is no communication as I am not sure if I configured it correctly. Should I do the crypto map on g 0/0 or dialer 1?
aaa new-model
!
!
!
!
!
!
!
aaa session-id common
!
!
no ipv6 cef
[code]......
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Nov 15, 2012
What I’m looking to do is setup a net-flow monitor for traffic going across a PIX firewall. I know unfortunately I can’t do this directly from the PIX because it does not support net-flow.
I do have a 2921 router on the same network that I have net-flow enabled to monitor traffic across the MPLS Connection.
Since the traffic for the MPLS is going out a direct interface I have applied the IP Flow egress/ingress commands to that interface to obtain the net-flow data I need. The PIX firewall however is not a direct interface so this can’t be done. I have done a little reading and believe I could use a policy map to create a “filter” so that any traffic that meets the ACL associated with the Policy-Map would get sent to net-flow monitor.
My question is how do I set that up so that so I can have the two net-flow data “streams/sources” go to separate net-flow ports so that I can monitor them independently of each other or is that not possible?
Both devices are connected to a 3750X switch; however neither is connected to a 10GB port. To my understanding that means I can’t run net-flow on the switch itself.
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Oct 6, 2012
I want to connect 2 ISP links into one Gigabit-interface on my Router 2921, can any one tell me how to do that ? sub-interface creation is not possible on cisco 2921
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Nov 21, 2012
the cisco 2921 Router has a default ip hhtp access class command found in it. Just i changed the default IP to the new ip i will use.The Router is accessable from the LAN only but not from the internet configured the Public ip . I think this is due to the standard access list 23 . how will i access the Router from the Internet using the Public IP.
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Dec 12, 2012
I have 2 links to 2 different departments switch with an up link of 10mb. I want to guarantee that both departments get at least 5mb, but can use part of the other 5mb that not in use. Is this possible?
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Apr 21, 2013
I have one interface setup to a Cisco 2921 router connected to a Cable modem.DHCP is on the 2921.when I connect to the ssid for my guest i'm redirected to the authentification portal 1.1.1.1 .i'm putting valide credential and when pressing the submit button .. it just go anywhere.
I have setup another SSID with a psk and it's working fine.. getting ip and able to browse internet.From what i have read... it's apparently DNS issue on my router.. but what should I check.
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Feb 14, 2013
I have a 2921 router with 1 etherswitch module installed. I haven't done it before and was trying to change the baud rate to 115200 for installing an IOS on the etherswitch module which had been deleted. I ended up "unsetting" the baud rate on the etherswitch and rebooted. Now, when I try to session into the etherswitch, its opens the connection but I can no longer see any text on the screen. Im using Teraterm. I've tried different baud rate settings for my serial port in TeraTerm but still cant see any text on the screen. I dont know of any commands from the router prompt. Any suggestions to fix this? If can start seeing the text, then I can probably configure and set up the etherswitch module.
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Mar 10, 2013
I have 2921 router and I have 3 very basic switches that I need to connect to the router. The switches have very basic default configurations and there is no way to edit them, so I only have one VLAN and one default gateway. I can't assign the same IP address to each LAN port. I'm not sure how to make this setup work.
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Jul 16, 2012
what is a maximum number of configurable gre tunnel interfaces on CISCO2921-HSEC+/K9 router?
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Apr 25, 2011
I am not able to configure Service policy output command in Cisco 2921 router.While configuring I am getting below error.Same config is working fine in Cisco 3845 router.I am suspectting the problem with license in IOS.
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Feb 12, 2013
I am configuring DHCP pool for voice vlan on cisco 2921 router.
Here is the setup.
2921 router -> 3750 -> 2960 PoE -> 7942 IP Phone
Router Config
ip dhcp excluded-address 10.146.54.1 10.146.89.50
!
ip dhcp pool VoiceVlan
network 10.146.54.0 255.255.255.0
subnet prefix-length 24
dns-server 10.144.68.32 10.144.68.33
option 150 ip 10.146.68.36
default-router 10.146.54.1
netbios-name-server 10.144.68.32 10.144.68.33
netbios-node-type h-node
[code]....
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Nov 6, 2011
i have an 2921 connected to an Catalyst 3560. My router interface shows quite a lot of input queue drops. Load is not too much max 5/255.
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May 30, 2013
I would like to know both Cisco 2901 or 2921 router and Cisco 5505 ASA can build site to site VPN.
1) what is the different to build site to site VPN between router and firewall ?
2) which is the best choice if using in site to site VPN connection ?
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Apr 14, 2013
I am struggling to have my PPTP traffic to get routed through NAT to reach other Server LAN segment. I am using Cisco 2921 router as a PPTP server.This Cisco 2921 router is working as PPTP server and doing NAT also to reach Server LAN segment (LAN-B).My problem is after PPTP connection establishes I cannot reach any of the LAN segment, but after connecting PPTP I can browse Internet without any issue, but none of the LAN element is reachable. Please have a look on the configuration I am posting 2921 router configuration to suggest something, I have also attached the network setup for better understanding…Just to update Clients in LAN-A can access Internet as well as servers (LAN-B). [code]
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May 29, 2013
I want talk BGP with ISP though 200Mb/s WAN link by using Cisco Router 2921; and in the near future WAN link will be upgraded to 1Gb/s. Does Cisco Router 2921 has enough performance to do this task?
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Nov 13, 2012
We have a CISCO 2921/K9 which has the securityk9 feature set (reflects Permanent under show version)
I thought that included SSL VPN, but doing a "show license all" it doesn't reflect that:
StoreIndex: 4 Feature: SSL_VPN Version: 1.0
License Type: EvalRightToUse
License State: Active, In Use
[Code].....
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Jun 30, 2011
Using a Cisco 2921 router with an RPS 2300, I came across a table in the 2900 Hardware Installation Guide that I can hardly believe: table 5-3 seems to tell me that in order to back up ONE 2921 with RPS power, I will need an RPS with TWO 750 Watt or TWO 1150 Watt power supplies. Is it really true that I need to throw at least 1500 Watts of backup power at a router that has a main power supply of approx 300 W?
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