Network Engineering Stack Exchange
Network Engineering Stack Exchange

Most Popular

more tags
1500 questions
6
votes
1 answer

7609 + SIP-400 PPPoE: cannot route to the Internet

I am trying to configure a 7609 router with a SUP7203BXL, SIP-400 and SPA5xGE as BRAS. The configuration is at the bottom of the question. The sessions are created, but the clients can't reach Internet. (The 7609 itself can reach internet.) I have a…
RS1983
  • 501
  • 4
  • 13
6
votes
1 answer

Juniper MX-5 EOPE Drop Pkt Cnt Incrementing

When running show pfe statistics error on a a couple of MX platforms, I see the EOPE Drop Pkt Cnt counter incrementing on 6 MX's out of 22. I believe these are "End-Of-Packet errors", but can't find any details about it at all. Any ideas? If not,…
DrBru
  • 1,629
  • 3
  • 16
  • 33
6
votes
1 answer

Daily, Weekly and Monthly Reports from Solarwinds?

I'm working with a Solar Winds NPM/NTA/IPAM golden-trio. I'd like to customize our reports to the point where I can received daily, weekly or monthly emails for various things - 95th percentile errors, bandwidth utilization on ingress / egress (not…
AjNetEng
  • 153
  • 5
6
votes
4 answers

DHCPv6 (with PD) client on Juniper SRX

OK, this one may technically be off-topic since I'm actually doing this at home, but I could easily see the exact same scenario arises in a small enterprise type of setup... Using an SRX210 to be a router for a Time Warner Cable connection (using a…
Jeff McAdams
  • 2,496
  • 22
  • 28
6
votes
2 answers

Encapsulation: can a higher protocol encapsulate a lower protocol?

I've heard someone say that a protocol higher up the osi model can encapsulate a lower protocol. As far as I know, personally, a protocol can only encapsulate a same-level protocol or one at a higher level, i.e. you couldn't have Ethernet carrying…
Daniel
  • 332
  • 1
  • 3
  • 12
6
votes
2 answers

Can you become your own ISP?

How exactly does an ISP connect you to the vast network of computers which is the internet? In my area there are several ISP's. For example. Bell, Rogers, and Cogeco all connect you to the "same internet." Some services such as start.ca and…
Dougie Fuoco
  • 61
  • 1
6
votes
1 answer

What's the purpose of "mac-address 0000.0000.0000" in NX-OS?

On a production Nexus 5K, I noticed the following piece of config: interface Vlan1 mac-address 0000.0000.0000 This is the entire Vlan1 stanza. What does this accomplish?
belacqua
  • 215
  • 1
  • 11
6
votes
1 answer

How does Cisco perform authentication server reachability on aaa?

Let's suppose we have a line like this: aaa authentication login default group radius group tacacs+ local According to the IOS 12.2 documentation: If R1 authenticates the user, it issues a PASS response to the network access server and the user…
radtrentasei
  • 1,099
  • 14
  • 32
6
votes
1 answer

What is the difference between ipNetToMediaPhysAddress and dot1qTpFdbPort?

I see the object description of ipNetToMediaPhysAddress from ipNetToMediaTable as the "The media-dependent `physical' address". Putting it simple, does it mean it returns the MAC addresses of all the directly connected nodes/devices? For…
Abhishek Balaji R
  • 554
  • 6
  • 16
6
votes
2 answers

Building a 3 port network tap (100mbps half-duplex)

I've tried building a network tap with only three ports: the two communicating parties and a tap side. I knew this would force the communicating sides to use at most half-duplex 100mbps, but detection is not an issue (I'm tapping my own hardware to…
Luc
  • 165
  • 1
  • 7
6
votes
2 answers

Cisco NTP server does not respond to queries

I have an NTP configured through out our in a hierarchy. 100% reliable with regards to providing time for Cisco devices. At one of our sites we allow cameras, servers, and workstations to utilize our Catalyst 4500s as their time source. Access layer…
henklu
  • 799
  • 1
  • 8
  • 18
6
votes
3 answers

How to find the client who downloads a big file?

today I found out that somebody in our organization utilized our uplink for 100%. We have Cisco WLC 2500 where I could see in application monitoring that 80% traffic of the last 90 sec was a file hosting service traffic. So, somebody had been…
dtsn
  • 93
  • 4
6
votes
1 answer

BGP, multipathing, and possibly OSPF

I'm setting up a second site for redundancy and DR. The goals are as follows: ISP fault-tolerance from either site: HostA, for example, can reach the internet in the event that ISP-A(primary) and ISP-B go down. Similarly, servers will continue to…
mwood
  • 395
  • 1
  • 2
  • 9
6
votes
1 answer

Cisco NX-OS 9K - LDAP Configuration

I'm having some trouble configuring LDAP authentication (via Windows AD) when connecting via ssh on our CISCO. I replaced some information from the switch, you will see it in uppercase here. Currently we only have one shared user, and the goal is to…
alcazaro
  • 63
  • 3
6
votes
2 answers

Can a single subnet work across several switches?

New to networking and studying hard but limited access to a kit to try things at the moment... My question is - if I had, for example, two Layer-2 switches cable connected, could I have devices on the same subnet e.g. 192.168.10.0/24, on either…
ICSOTSecurityEngineer
  • 63
  • 1
  • 6
1 2 3
…
99 100