Questions tagged [router]

For questions about network routers, devices that forward data packets between computer networks, commonly at the network layer (layer 3) of the OSI model.

44 questions with no upvoted or accepted answers
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How to control unwanted UDP traffic (Broadcast & Multicast) on Cisco Router 2911?

Please suggest, we are getting UDP traffic either broadcast or multicast in router 2911 which cause 95%+ utilisation of the router. And we got error in link and business impact due to this. Company ...
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443 views

VirtualAccess Behavior with PPP

A small ISP I provide service for has recently been consolidating their equipment. One of their small branches only has a handful (5 or so) of users receiving their internet through a router, a Cisco ...
5
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1answer
393 views

Time Cisco Router reload not always mentioned

Im trying to measure our cisco router availability data based on downtime happened. I assume from show version, the time mentioned in tag "System returned to ROM" is when reload started, and next line ...
5
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1answer
228 views

Juniper ERX 310 traffic not going more than 710 mbps?

We have a Juniper ERX 310 configured as B-ras, as per specifications of the router, we should be able to terminate 8000 PPP sessions, but we notice that traffic on the router interface not going more ...
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137 views

ASR920 - port Te0/0/3-tefp1 is not a router port on Vlan 217

When I enabled debugging: PIM#debug ip igmp snooping router I get in logs: Mar 30 15:58:36.275: IGMPSN: router: port Te0/0/3-tefp1 is not a router port on Vlan 217 Configuration for interfaces: ...
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0answers
81 views

Need to configure site to site SSL VPN between two Cisco routers

I would like to configure site-to-site SSL VPN between two sites. I originally set up an IPSec VPN between the two Cisco routers and found I was only getting 10 percent of the available bandwidth. ...
3
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0answers
69 views

PVC not Accepted by CISCO 878

I have the following config. set up for an MPLS network on my CISCO 878: Current configuration : 941 bytes ! version 12.4 no service pad service timestamps debug datetime msec service timestamps log ...
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59 views

Is this a valid OSPF topology?

In the following topology: every Backbone router is an ABR. Router 2 belongs to three different areas, area 0, area 1, and area 4. is this a valid topology for OSPF ? it works as expected and it ...
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51 views

DHCP ivp6 vs DHCP ipv4 router config (cisco)

When setting up a router as dchp server in ipv4, we specify a pool under which we give the network and the default-gateway and that's it: However in ipv6 stateless dhcp , we create the pool then ...
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0answers
1k views

AAA - IP HTTP server: local authentication and authorization

We configure AAA on router for the Telnet/SSH access. We activate HTTP on our router to our provisioning tool. The provisioning tool needs to retrieve information and execute some command on the HTTP ...
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18 views

How to recover/reset password on Ascend/Lucent SuperPipe 155

I am trying to set up an Ascend/Lucent SuperPipe 155 ISDN router that I don't know the password to. I need to recover or reset this password before I can use the router. I found a reset procedure on a ...
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80 views

Why do the tunnel protocol on these two router show different values

Two routers R1 and R2 have a tunnel built between them in the 103.103.103.0/24 network. The end point of the tunnel are 75.75.75.2(on R1) and 76.76.76.2(on R2). Can anyone explain why does the Tunnel ...
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89 views

Cisco ISR Zone Based Firewall dual stack not matching returning traffic for ipv6

I have a bit of a problem with my Cisco 1921 ISR config. I have ipv4 (obviously) and also native ipv6 connectivity in my home lab. I am trying to set up the zone based firewall. With ipv4 traffic, the ...
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70 views

Cisco IP SLA HTTP request with frontdoor VRF

I am trying to use a IP SLA for HTTP on my Cisco ISR 4321 router to check if a website is reachable. The challenge is that I need to do that in a frontdoor VRF. I have configured ip name-server vrf ...
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46 views

traffic of AF41 marking under interface

I have used port-queue commands most of the time to check traffic status under BE, EF, AF4. But I haven't found command to check for AF41 to AF42 on Huawei VRP or cisco IOS. How can check traffic of ...
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101 views

PPPoE Performance Test

I'm looking for some tool or a way to execute performance test with pppoe account. simulate PPPoE sessions and traffic. Example: I have a PowerEdge R420 running a VYOS, I was wondering, how is the ...
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0answers
141 views

Cisco Asr1001 not able to receive 2048 macs (arps) in a sub-interface

I´m Brasilian, so excuse me any gramar error. I have a cisco router ASR1001 (IOS XE Version: 03.08.01.S) and I need to connect it to a service provider running BGP ipv4. This service provider gave me ...
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106 views

Firewall/Router not translating correctly

I am currently having trouble gaining internet access from the PC. Any suggestions or advice would be most welcome :) In order to diagnose a much larger issue, I have scaled my lab configuration ...
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0answers
171 views

BFD support for OSPF vyatta 6.2?

Is it possible to get support for BFD for OSPF on vyatta 6.2? I cannot find any information about it on the internet. The only thing I've seen is that the support is available on Brocade Vyatta 5400 ...
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0answers
117 views

Traceroute probes

In traceroute, when a * is recieved, it could mean the router didn't reply due to various reasons- either the router is busy processing other packets or ICMP is blocked. I think few ISPs configure ...
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322 views

wpa-aes EAP-peap authentication problem

I'm trying to connect ubiquity NanoStation M2 as Station/Router mode to a hotspot that I believe has WPA/AES security and EAP-PEAP for auth. I have tested the username and password from my laptop and ...
1
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1answer
509 views

Cisco Radius Authentication with Local Fallback

We have Radius authentication setup on a number of CISCO devices. Each device also has a local account. Is it possible to make it so you can only use the local account when the radius server is ...
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28 views

Cisco 1841 stuck on boot?

I found an old Cisco 1841 router and decided to boot it up to play with it a little. Everything seemed to be going ok but I guess something interrupted the boot. Last line is %SYS-6-...
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19 views

confused in incoming and outgoing vc number

When filling out the forwarding table for VC, how is the incoming VC number deduced? what is the trick? For example in the diagram shown how are the incoming and outgoing VC numbers found out for a ...
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13 views

what is difference between main ring and sub ring in ERPS?

According to my knowledge , we can configure multiple ERPS rings in service based. But there is a concept of main ring and sub ring.Please explain significance of each.
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18 views

Are there NATs which will block any further incoming packets from a peer after rejecting first one?

I'm attempting to test udp hole punching. Right now I'm simply testing how my computer reacts behind a router. If I send a udp packet from my computer to a server, it can reply back on the same port ...
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19 views

take oid of interface on router via snmpwalk for monitoring

Could someone explain how to get oid value of an interface via an snmpwalk ? I have some value like : iso.3.6.1.2.1.2.2.1.2.15729260 = STRING: "vlan 110" Thanks in advance for help
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30 views

Why does my 1921 Router not bring up its interfaces?

I have the 'no shut' command entered on both interfaces. They work when I enter the command. I copy run start 'wr' Power was cycled for the Router, Switch (3560x-24), Cable modem and AP. They were ...
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19 views

Confuse about type of handover in Mesh Router?

I have difficulty in understand the concept of handover which can be categorized into two: Horizontal or Homogeneous handover Vertical or Heterogeneous handover Horizontal handover occur within the ...
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0answers
38 views

MPLS LSPs Unequal Cost Load Balancing in Juniper MX

I have confusion with regard to Juniper MPLS LSP unequal cost balancing. In Juniper we can define 2 or more LSPs between R1 and R2. With some LSPs taking the IGP best path (default behavior) while ...
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0answers
55 views

ASA - communication between 2 tunnels

I have two IPSEC tunnels with an ASA in the middle Site A - 10.20.4.0 /24 (65.176.80.84) Site B - 192.168.142.0 /24 ASA - 10.99.206.0 /24 (95.12.22.33 Site A - 10.20.4.0 /24 can reach the ASA and ...
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139 views

How Cisco Line Protocol works

How do Cisco Line Protocol works ? I could read this: https://www.cisco.com/c/en/us/support/docs/content-networking/keepalives/118390-technote-keepalive-00.html, about Ethernet Interfaces keepalive ...
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40 views

Basic connectivity won't work in Packet Tracer

I've been redoing this multiple times and I'm sure i configured it correctly, however there is nothing happening at all. It's just a basic network with 3 routers and OSPF configured. Here are the ...
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2answers
310 views

Slow performance with Cisco Comcast Business router with static IP address

20I have a server with a static IP address connected to a Comcast Business router (Cisco DPC3941B). I also have a second machine directly connected to the same router. It gets assigned a NAT address ...
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9k views

Huawei Router Telnet and SSH configuration - Authentication

I am following Huawei user guide to enable telnet server and telnet service to a port. However, whenever I am trying to do a telnet, I see this error and the connection times out - HUAWEI %%01SOCKET/...
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3k views

ASR1006 link down due to remote fault

we have 10G fiber running since 1 year but today i have migrate that same link to ASR1006 and i am seeing following error, what could be the wrong? Oct 7 17:29:48.211: %IOSXE_SPA-6-UPDOWN: Interface ...
0
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1answer
84 views

How to get Adtran TA5000 23 firmware information with an SNMP request?

I'm looking for any SNMP request that I could use through a Linux terminal to get the firmware information of all our ADTRAN DSLAMs that we currently have in the field(there are close to 18,000). I ...
0
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1answer
59 views

Route to host deleted

Now this is strange but I have an android phone connected to the same office router via Wi-Fi but it gives an error "No route to host" when I try to connect to my computer locally on the same network. ...
0
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1answer
483 views

Cisco ASR1006 Power usage

Hello everybody I hope all is well. I was wondering if somebody can help? I am trying to find a command to run for the power utilization on a ASR1006 using the following version of IOS-XE; Cisco ...
0
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1answer
251 views

Configure E1 CAS signalling on a 2851 router

I have a 2851 VoIP router (CME) with four E1 ports. One port is configured as normal E1 PRI, and it is connected to PSTN. I want to configure another E1 port as a CAS signalling E1. I need to be ...
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2answers
259 views

how to make multiple subnet able to use one resource without being able to connect to each other in any way

i`m trying to connect multiple subnets to one web server but these subnets should not be able to connect to each other.i cant make any changes on these subnets. I just have a lan cable from each ...
-1
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1answer
494 views

Two routers connected to a switch= same IP host address?

I have two routers, named Router0 and Router1, that are connect to a switch on ports FA0/1 and FA0/2, respectively. Now lets say this network has an address of 201.201.201.0/24. Would the IP host ...
-1
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1answer
137 views

How can I configure a router to forward an incoming hardcoded IP address to a named DDNS address?

I have an IP telephone but the IP address can only be specified explicitly, there's no way to enter a host name. The problem is that the IP address of the host name can change. Two possibilities ...
-1
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2answers
200 views

network problems

I am having a problem with my network. I have a router (R1) connected to another router (R2) R1 is connected to a switch. R1 switch has two PC's connected to it. the PC IP's are 128.107.35.10 and 192....