n**********l
发帖数: 271 | 1 How can it be done on a Cisco/Juniper? Why would people do that except for
testing/troubleshooting?
1. use weight(Cisco)/preference(Juniper), does it cause problems with iBGP
since other BGP routes don't know about this (multiple peering locations)?
2. change local-preference with route-map? Does it scale? Do it on all edges
for all prefixes?
And why in the world would you do that? Maybe one link is backup only (
expensive, poor quality etc.)?
Does it make sense to dedicate one link for outbound... 阅读全帖 |
|
n**********l
发帖数: 271 | 2 Thanks.
I was assuming peering at multiple locations so iBGP is involved.
If the customer only gets a default route, why use BGP? There are a lot of (
cheaper) ways to do outbound load balance via multiple WAN links.
For some reason my ISP has been pointing default at AS3549 (Level3) for the
past few months... All outbound traffic goes to AS3549 while inbound traffic
arrive via different peers (AS3549, AS6939 etc.) The first hop/last hop is
different from bidirectional traceroute which does conf... 阅读全帖 |
|
s*****g
发帖数: 1055 | 3 Please see inline
[saiwong] Not necessarily, if you don't have your own transport between
multiple locations, you don't need and can not run iBGP
(
[saiwong] You still want run BGP to have control of your own announcement.
the
traffic
is
[saiwong] I don't quite understand what you are saying, if you are multi-
homing to multiple ISPs, you must be importing the full Internet table, than
99.999% of your traffic won't hit the default route. |
|
n**********l
发帖数: 271 | 4 AS65400 customer
AS65500 upstream
BGP peering, one router at customer, one router at upstream
two circuits between routers
How to use only one link and leave the other as backup (use the backup link
only when the primary link goes down)
Why would anyone provision a circuit and only use it as backup? |
|
n**********l
发帖数: 271 | 5 Thanks. I was thinking about some script to monitor link status and add/
remove the static route for the backup circuit interface (does not apply
because no control over upstream router).
Does it cause BGP restart? Won't the delay cause noticeable packet loss(
especially for 10G/40G links)? |
|
r********t
发帖数: 338 | 6 Theoretically, BGP session should stay up if EEM flaps the interface quickly
enough.
However, it normally takes a couple seconds for EEM to react the event.
There will be a few seconds outage. |
|
x*********n
发帖数: 28013 | 7 给你分享几个题目，不是面试题。
1.router ospf 1，network xxxx command，和router bgp 100， network xx command
，这2个network command有什么区别？ |
|
n**********l
发帖数: 271 | 8 Is it possible for discontiguous networks (for example, multiple datacenters
across the world) to use the same ASN? A private backbone connecting them
is a must?
Route reflector does not solve the discontiguous problem, does it?
I was asked a bunch of questions for a CDN network and last night I realized
everything I said would make no sense if it has a noncontiguous backbone.
AS65000 East coast datacenter -- AS 100 (Upstream1) -- AS65000 West coast
datacenter
AS65000 East coast datacenter -- AS... 阅读全帖 |
|
n**********l
发帖数: 271 | 9 一个interview BGP diagram里面sites之间没有link, 直接连upstream
我就看得莫名其妙的了....估计答的大都错了.... |
|
x*********n
发帖数: 28013 | 10 means something吗？
比如我现在sh ip bgp x。x。x。x， 显示如下
Origin IGP, metric 0, localpref 100, weight 32768, valid, sourced, local,
best
这能证明这个attribute的scope吗？
比如，localpref应该是inside AS的，weight是router的，那这个Origin是啥？
比如我想知道这个attribute是在route里面attached还是local only的，用什么
command可以看呢？还是必须死记硬背？ |
|
x*********n
发帖数: 28013 | 11 同学，origin code在13条选择里面排名第5，怎么会没有意义呢？
我的意思是sh ip bgp xxx中显示，能不能指代出应用scope。
engineering. |
|
s******v
发帖数: 4495 | 12 bgp tablet太大，ipv4 unicast有300-400K，会撑死IGP的 |
|
s*****g
发帖数: 1055 | 13 Let me try to answer your questions, there are two types of MPLS VPNs, MPLS
L2VPN and MPLS L3VPN, MPLS L3VPN is standardized in well known RFC2547,
payload is IP, MPLS L2VPN is a general term for (Cisco)AToM, EoMPLS and
VPLS, payload is FR/HDLC but more commonly Ethernet/Ethernet VLAN.
ISPs need to run IGP in their own internal network, because MPLS LSPs are
typically among iBGP loopbacks, iBGP has to be on top of TCP/IP, of course
you can have MPLS LSPs that are purely used to transport IP tra... 阅读全帖 |
|
m**k
发帖数: 290 | 14
routing-policy aggregate
import policy export policy
OSPF ----------------> inet.0 ---------------> bgp
建议你去上一下Juniper advanced routing 的培训吧。 |
|
u*****e
发帖数: 47 | 15 非常感谢啊。我再研究一下。培训课，我会考虑的。不过现在有点远水解不了近火啊
。 以前做cisco 和 hp 的bgp，没发现那么麻烦。。。 |
|
L******t
发帖数: 1985 | 16 As LZ mentioned 2 BGP sessions, I suppose it's multihoming.
BFD is definitely the way to go. Once link failure detected, LZ's router
will start to reroute through 2nd link per routes already available.
Unless LZ's router is doing transit, no route to withdraw from backup SP.
Correct me if I'm wrong.
node |
|
b***p
发帖数: 700 | 17 I know what you mean. I thought LZ has other iBGP peers(R2) with the dual-
homing edge router(R1), in this case the router(R1) should withdraw/re-
advertise the prefixes from backup to iBGP peer(R2).
If LZ only has 1 BGP rtr as the edge, then no re-advertise, just best-select
the backup prefixes. |
|
w****o
发帖数: 2260 | 18 请大家推荐一本比较好的讲BGP的书，有原理，有实例，配置，troubleshooting.
谢谢 |
|
s*****g
发帖数: 1055 | 19 MPLS label space has little to do with the size of internet, but more
related to how many BGP neighors a router can peer with (and VPNs it need to
provision), Vanilla IP over MPLS will need only one label per BGP speaker
for all BGP routes this speaker advertises. MPLS label is only locally
significant, it is highly unlikely a BGP route will have 2^20 BGP peers,
well, labels might need to be allocated for VPNs if BGP speaker is also MPLS
VPN PE, But still ... |
|
w***s
发帖数: 321 | 20 其实说MPLS VPN也误导了，就是标准的MPLS + BGP结构，一样的BGP free Core效果，
只是用IPinIP模式，MPLS就可以省了。但是在MPLS方案里面PE还是有全路由，所以LISP
最重要的就是Map－Request功能。
之所以说这个更象H323查询过程，而不是DNS，原因有两个：
1. 系统里面已经有DNS，再搞一个会混淆
2. DNS没有做EID-RLOC转换，还是EID的不同表达方式，而从电话号码到Gateway的映射
更类似于EID-RLOC的关系，Admission Control就不是重点了，不过加上这功能也不错
，实际上在MAP Server上是可以实现一定级别的路由策略的。
最后的问题就是Tunnel End Router选取，取PE，就恢复到原始的MPLS＋BGP方案，MAP
Cache的规模多少近似于全路由。CE会好的多，毕竟一个site的用户不会访问整个
Internet，当然DC除外。如果允许有Default RLOC的话，整个方案看起来很不错。
running MPLS, service provider can still run... 阅读全帖 |
|
w***s
发帖数: 321 | 21 其实说MPLS VPN也误导了，就是标准的MPLS + BGP结构，一样的BGP free Core效果，
只是用IPinIP模式，MPLS就可以省了。但是在MPLS方案里面PE还是有全路由，所以LISP
最重要的就是Map－Request功能。
之所以说这个更象H323查询过程，而不是DNS，原因有两个：
1. 系统里面已经有DNS，再搞一个会混淆
2. DNS没有做EID-RLOC转换，还是EID的不同表达方式，而从电话号码到Gateway的映射
更类似于EID-RLOC的关系，Admission Control就不是重点了，不过加上这功能也不错
，实际上在MAP Server上是可以实现一定级别的路由策略的。
最后的问题就是Tunnel End Router选取，取PE，就恢复到原始的MPLS＋BGP方案，MAP
Cache的规模多少近似于全路由。CE会好的多，毕竟一个site的用户不会访问整个
Internet，当然DC除外。如果允许有Default RLOC的话，整个方案看起来很不错。
running MPLS, service provider can still run... 阅读全帖 |
|
u*v
发帖数: 18 | 22 IBGP can not resend the BGP table from one IBGP neighor to other IBGP neighbor
, so you must be IBGP full mesh or using BGP reflector. You need not
physically connect these IBGP neighbor, BGP is using TCP, so just let the IBGP
nei can reach each other is enough, normally, you can run IGP for it. One
more thing, BGP will not install BGP into routing table and announce to other
AS, only if it syn with IGP or
you run IBGP on these nodes of the path to destination. |
|
x*********n
发帖数: 28013 | 23 R4：
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 150.2.5.5 remote-as 200
neighbor 150.2.5.5 disable-connected-check
neighbor 150.2.5.5 update-source Loopback0
R5：
router bgp 200
no synchronization
bgp log-neighbor-changes
neighbor 150.2.4.4 remote-as 100
neighbor 150.2.4.4 disable-connected-check
neighbor 150.2.4.4 update-source Loopback0
答案给的是这个，但是
sh ip bgp sum的时候，那个status总是active，这个说明啥，要从哪里差错？
sh ip route里面，彼此对方的subnet都没有进table。ping 不通。
ping 2边的serial口，能ping通。
大家说是为啥啊？缺... 阅读全帖 |
|
m*********1
发帖数: 204 | 24 1. 请你介绍一下最近做过的项目（这里问得很仔细，差不多10多分钟）
会什么计算机语言？
2.一个用户连接到交换机上，还有2台服务器，访问不到了，请你简单说一下排错的过程
3.facebook的大楼，有很多交换机路由器，什么牌子都有啊，按照传统方式连接在一起
。请你说一下新的网络趋势下怎么重新设计这个网络
4.先问BGP是干什么用的，然后问IS-IS和BGP的区别，什么情况下用ISIS，什么情况用
BGP
5.简述TCP三次握手建立过程，为什么要三次握手，sequence number派什么用处
6.TCP和UDP的区别
7.facebook有几千几万台网络设备，怎么有效管理这个网络，说你的idea
8.Spanning tree熟不熟？简述一下工作过程
9.Python里面，list和dictionary的区别
10.unix/linux下面，保存着所有网络设备的配置文件，请问怎么最快找出来哪个设备
配置了BGP，怎么比较两个文件
11.随便问了一下网管系统network monitoring
最后随便聊了一下，facebook主要用ISIS，BGP和MPLS
他们配置主要靠自动配置... 阅读全帖 |
|
m*****b
发帖数: 13 | 25 QUANTIL is a high growth, pre-IPO startup in Silicon Valley, backed by the
world’s second largest CDN, ChinaNetCenter. QUANTIL helps customers reach
new markets by accelerating their content on our global network. We control
over 500 POPs and 30,000 servers, which generate 7 Tbps of throughput.
Mobile, Website, Download, Video, Audio, Enterprise Application and Carrier
Acceleration, we do it all.
Our team strives to simplify IT. Our long term focus on creating true value
safeguards both our cust... 阅读全帖 |
|
s*****g
发帖数: 1055 | 26 It is true BGP routes will be installed in FIB, but that has nothing to do
with LFIB space. Say one BGP router (say its BGP router id 1.1.1.1)
advertises 100K BGP route to a peer, for any one of those prefixes, the peer
will do IP lookup, and find out the next hop is 1.1.1.1, the peer will
further do recursive lookup for 1.1.1.1, and better you you have a label
switch path to 1.1.1.1 on this peer, so the look up will return something with a label. (RSVP or LDP), this peer just slap what ever lab |
|
s**********9
发帖数: 1238 | 27
呵呵，我的意思是每个AS内的IGP路由目前ISP基本都是ISIS了，有3万条就足够了。
我想LZ可能看错了，500K条？那还要BGP来干吗？全用IGP就可以了嘛。目前你都查到
BGP路由有300K左右了，全换OSPF不好么？
就是因为IGP消耗大，支持不了那么多的路由，才有BGP的出现
链路状态协议的OSPF对CPU的开销比BGP要大多了。
实际上，50K的OSPF应该也没有的，我记的OSPF最多支持15000条路由
具体查查 |
|
s*****g
发帖数: 1055 | 28 The way I understand LISP:
1. Data plane is more like moving MPLS to customer edge. Today service
provider can have BGP free core by transport IP over MPLS, while LISP
extended this "tunneling" to customer's edge router without customer running MPLS, service provider can still run existing MPLS network or they can have a pure IP core but its routers don't need full internet table. LISP
encapsulation has more overhead than MPLS. However, you can not transport IP/MPLS across multiple SPs (maybe yo... 阅读全帖 |
|
s*****g
发帖数: 1055 | 29 The way I understand LISP:
1. Data plane is more like moving MPLS to customer edge. Today service
provider can have BGP free core by transport IP over MPLS, while LISP
extended this "tunneling" to customer's edge router without customer running MPLS, service provider can still run existing MPLS network or they can have a pure IP core but its routers don't need full internet table. LISP
encapsulation has more overhead than MPLS. However, you can not transport IP/MPLS across multiple SPs (maybe yo... 阅读全帖 |
|
s*****g
发帖数: 1055 | 30 This is a real world network problem, high hands please comment:
We have a global CDN network serving contents to a good number of Internet users, although we focus/care more on US users. In order to guarantee user experience, we place our contents in data centers strategically near major tier-1 providers in major exchanges, and use BGP anycast to allow user to access nearest contents. Geo-aware DNS will give out regional anycast address for DNS queries, such that data centers in a certain reg... 阅读全帖 |
|
f*****m
发帖数: 416 | 31 为啥不能用老的anycast address?
users, although we focus/care more on US users. In order to guarantee user
experience, we place our contents in data centers strategically near major
tier-1 providers in major exchanges, and use BGP anycast to allow user to
access nearest contents. Geo-aware DNS will give out regional anycast
address for DNS queries, such that data centers in a certain region can also
backup each other. This works good enough for us fo: r most users. But not
for all users, so we want t... 阅读全帖 |
|
R*****A
发帖数: 127 | 32 practical solution:
1. bgp anycast say 1.1.1.1/24 (a risk here is that best bgp path does not
mean it has the best path for traffic (RRT, bandwidth, etc)
2. Global DNS always return CDN.com to 1.1.1.1/24 (singe address DNS A
record, or geo-aware multiple A record DNS, whatever)
3. Then for a specific addr, say 1.1.1.1/24 from one ISP, traffic load is
heavier and you want to do load balancing. Then an geo-DNS is placed here (
this one is not the global-zone). It restricted to return query from
sp... 阅读全帖 |
|
s*****g
发帖数: 1055 | 33 Here we go, simple 2 router setup,
R1#sh run | sec bgp
router bgp 1
bgp log-neighbor-changes
neighbor 2.2.2.2 remote-as 1
neighbor 2.2.2.2 update-source Loopback0
!
address-family ipv4
no neighbor 2.2.2.2 activate <== IPv4 neighbor not activated
no auto-summary
no synchronization
exit-address-family
!
address-family ipv6
neighbor 2.2.2.2 activate
neighbor 2.2.2.2 send-label
redistribute connected
no synchronization
exit-address-family
R1#sh ipv6 route
IPv6 Routing Table - 3 entries... 阅读全帖 |
|
z**r
发帖数: 17771 | 34 NH应该是far end PE loopback，这个肯定是从IGP得到，同时也应该在LFIB里，你不激
活ipv4 neighbor，同时看一下show mpls for？
刚才俺也做了个实验，果然不需要在add ipv4下激活ipv4 neighbor，只需要在add
ipv6下激活ipv4 neighbor就可以送ipv6扩展了。
R1----R2----R3----R4
R1 and R4 are dual stack, R2 and R3 are IPv4 only, LDP enabled on all
interface
相关配置如下
!
!
!
ip cef
no ip domain lookup
ipv6 unicast-routing
ipv6 cef
!
!
interface Loopback0
ip address 10.1.1.1 255.255.255.255
!
interface Loopback1
no ip address
ipv6 address 2001::1/128
!
interface Ethernet0/0
no ip address
... 阅读全帖 |
|
x*********n
发帖数: 28013 | 35 Rack19SW1#sh ip bgp sum
BGP router identifier 150.19.7.7, local AS number 300
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/
PfxRcd
155.19.37.3 4 200 80 74 19 0 0
Rack19R3#sh ip bgp sum
BGP router identifier 150.19.3.3, local AS number 200
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/
PfxRcd
155.19.37.7 4 300 74 81 22 0 0
这里面2个互为邻居，为啥router ID变来变去？
是不是因为没有用loopback IP做router ID？如果用loo... 阅读全帖 |
|
x*********n
发帖数: 28013 | 36 这是2家大公司，都签了保密协议，所以我就不能讲原题和名字了，也不要问了，我把
知识点放在一起。以供大家复习。
STP
bridge ID，STP使用细节。HSRP使用中，STP disable了一个口，什么影响?
OSPF
backbone 的设计考虑，2个non-backbone，traffic怎么走（必须经过area0），各个状
态看到什么包，如果不成功，会是什么原因？path selection怎么选，stub看到什么
LSA，NSSA看到什么，为什么？给图形，有broadcast，有unicast，里面的ospf
database是如何的？
BGP
MED怎么改traffic，next-hop的使用（不仅仅是iBGP变不变的问题），sh bgp sum，各
个状态的细节。
VPN
IPsec2个阶段，如何troubleshooting，
L3MPLS-VPN
AS-path可能bring的问题，如何解决（2个），有多少label，RD，RT应用，PE-CE看什
么，6PE怎么回事？如何分发mpls label。cspf 和rsvp不同点，介绍。
TCP
MSS和MTU的区别。t... 阅读全帖 |
|
m********d
发帖数: 188 | 37 thanks superdmv for answering question.
do you have link for the slide to explain what tier is?
multiple 10G NIC per OCA. good to know. I just read from https://signup.
netflix.com/openconnect. they didn't mention multiple 10G nic per OCA. 2* or
3* 10G NIC per OCA is very surprising.
for default route, quote from https://signup.netflix.com/openconnect:
Appendix 3: BGP Configuration
IP prefix and metric (MED) data are used to determine which network blocks
an
appliance or appliances will serve. A... 阅读全帖 |
|
z**r
发帖数: 17771 | 38 the BGP routes will be installed into IP table eventually right? anyway....
let me clarify the question from different point of view then, say the whole
network has IGP only, all 300k prefixes are IGP prefixes, and it's
approaching to 1M now
..
need separate labels for its BGP routes, it only needs to advertise ONE
label for its BGP router ID. |
|
c*****i
发帖数: 631 | 39 l2vpn有基于mpls和l2tpv3的。然后又分vpws和vpls。signalling方面又有ldp和bgp。
然后又有bgp auto discover+ldp或者bgp singalling。
, |
|
s*****g
发帖数: 1055 | 40 If running BGP then you don't need explicitly redistribute, prefixes from CE learned by BGP will automatically be put in vpnv4 table -- the reason being you can only run one BGP process (on most platforms). |
|
t*******r
发帖数: 3271 | 41 来自主题: EmergingNetworking版 - 一个面试题 以下回答不针对楼主提的问题, 只是一般性的看法:
1, 最好不要用私有地址做PE-P-PE的互联, 因为一般是一张网干多件事, 而且loopback
是私有IP地址会有
管理的问题;
2, 同一个VRF里做Internet访问确实比较扯, 早年JUNIPER实现过, 十分不scalable.
用户是公网地址
那是好的, 用户是私有IP让你做VRF里的NAT那才是生不如死;
3, Saiwong提出的2个IFL(逻辑接口)确实是个好办法, 但是, 仍然需要SP端做相对复杂
的配置更改;
4, 对于P router(P only), 的确要减轻控制平面的压力, 最好是RR/P/PE功能性分开.
细化一点儿来说,
L3VPN RR/L2VPN(VPLS) RR/IPv4 RR/IPv6 RR最好也分开, 当然, PE就不必了.
BGP table还是要适当控制(route-target方式), 避免所有PE(不需要full bgp feed的)
都有全网路由
针对快速无缝切换:
A. 先试点开几个VPN site的业务(不同类的, 比如VPLS/L3VPN), 证明端到端LSP是通的
, V... 阅读全帖 |
|
s******k
发帖数: 234 | 42 民工确实比较闲。。嘿~~~现在做实施。。没项目的时候自然就闲啦。。。
我2010年左右在国内最大宽带运营商（不说名字是怕搜到麻烦）的集团IPv6项目组，这
个项目是涛哥过问，中央拨一部分款，是一个亿级的战略研究项目。项目每周直接
Report给董事长。当然项目组的研究内容不会仅仅是一个小小的IPv6。当时的规划是4
个省（上海，广州，江苏，四川）的部分区域上IPv6，现在上海，深圳，无锡，成都应
该已经有了大量的IPv6客户了。我10年脱离项目组最后一个会就是某个城市的具体V6设
备采购问题了。这些城市然后加上世博和深大运会做公开试点。目前国内的IPv6用户我
估计吧，可能超过100万了(这个纯粹拍脑门想出来的)，不过这100万人大部分都是在不
知情的情况下。目前的IPv6测试模式都是用户一次拨号同时获得IPv6/IPv4地址。通过
这种双IP的模式逐渐过渡。确确实实没有什么主动性推动。后面的消息我就不太清楚了。
我觉得ATT没有可能是因为他们根本就不急迫，因为他们有大量的存货。但是我们没有。
现在IPv6最大的问题就是。。。以往技术都是由应用推动技术，技术再催生应用这样一
种模式存在... 阅读全帖 |
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s******v
发帖数: 4495 | 43 but ipv4 connectivity with label is carried by IGP.
when I did show ip bgp
PE1#sh ip bgp 44.100.100.2
BGP routing table entry for 44.100.100.2/32, version 5
Paths: (1 available, best #1, table default, RIB-failure(17))
Not advertised to any peer
Refresh Epoch 1
Local
44.100.100.2 (metric 2) from 44.100.100.2 (44.100.100.22)
Origin incomplete, metric 0, localpref 100, valid, internal, best
rx pathid: 0, tx pathid: 0x0
this ipv4 prefix is even marked as RIB f... 阅读全帖 |
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x*********n
发帖数: 28013 | 44 我发现美国的recruiter贼噶好，还帮忙准备面试问题。
趁热打铁我记下来。
BGP部分
well know attributes，
origin里面有哪几个？
每一个attribute是怎么prefer的，越大越好还是越小越好，default value，能不能
transit
BGP neighborship 每一个阶段。
OSPF
area是针对interface还是router，type 7 LSA 在哪里可以看到（NSSA）
ospf neighborship state machine，每一个阶段。
Linux
怎么看ip table（netstat -rn）
怎么看source，dest IP（tcpdump），
怎么看mac-address table（arp -a）
MPLS
PE，P，CE概念，PHP概念，mpls lable多少个bits
2个neighborship我都没有回答好，就回答了一点点，还把exstart张冠李戴到bgp那里
了。linux那几个太紧张了，补救的还算快。 |
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s*****g
发帖数: 1055 | 45 community-list is used by service providers not customers (typically), I
assume if Apple has a huge internal transit network (its own or via MPLS-VPN
), then it will use this RFC1998 thing heavily.
I don't know what you mean by "community-list优于as-path", community string
itself has no meaning in BGP decision process (except those well-known ones)
it is just used as a language that translates customers (or providers') BGP
needs to actionable BGP attributes, i.e. local-preference, as-path pre-
pen... 阅读全帖 |
|
c******0
发帖数: 881 | 46 从上个月1号开始正式找工作到现在已经一个月有余，晚睡早起，接发邮件，接打电话
，看书复习，GNS练手，说辛苦还真是挺辛苦的，不过好在总算慢慢的开始有结果了。
昨天今天各拿一个offer，虽然还有公司在继续走流程，但是这两个offer给的考虑时间
比较有限，加上也累了，想考虑着接受一个开始认真工作了。
大大小小的公司各种面试已经数不过来了，最多的一天连面四个技术面，加上HR的电话
，总共打了5个多小时。这其中能叫的上名字的，也就是那么几个公司cisco，juniper
，amazon，AT&T，还有一些pandora之类看起来貌似有一些规模的公司。
CISCO，面试题目最理论的公司。其实这是我没有想到的。跟juniper的面试风格截然相
反，
按理说应该得有一些经验相关的问题吧，而且要求上也是有要求工作经验的。总共三个
工程师
面，问的问题全部很理论很标准，类似ospf邻居建立过程，ospf E1/E1/N1/N2的区别，
bgp邻居建立过程，bgp包的类型总类等等，基本上对答如流，毫无压力。感觉应该是能
进入下一
轮的，但是时间战线还是一如继让的拉得很长，估计是没有时间等了。
AMAZ... 阅读全帖 |
|
b*******k
发帖数: 396 | 47 半年了，我们组一个网工的职位一直没有招到人（我们是挺大的vendor）。我一直在电
面，凭大概印象统计，有1/4~1/3的人是no show，估计都有其他更好的坑跳了。面上的
人里，有一半是什么都不知道，最基本的ospf，bgp问题都答不上来的（答的连边都沾
不上），其中还有很多是大公司干过多年的，不知道怎么混的。然后剩下的一半，能答
上一半的基本问题，就给onsite了，然后其中又要有一小半不来onsite了。最后总算等
到onsite的人，稍微复杂点的问题，来个scenario的问题就趴下了。可见，这行的工作
是多么好找，以至于只有新手和混日子的才出来撒简历。
劝大家如果你的专业不好找工作，赶紧转吧，找个什么学校的telecom的专业两年
master，顺便搞几个cisco的证，立刻找年薪10万的工作。
update：
看到楼上很多人质疑，解释一下。
首先什么叫基本，我们公司就是搞路由器的，任何来面试的人用脚趾头想也应该知道我
们会问路由的东西，所以我觉得ospf和bgp是基本。ospf的几种lsa是什么算基本问题吗
？如果来面试的人连这都答不上来，你觉得他算合格的网工吗？们也想问... 阅读全帖 |
|
b*******k
发帖数: 396 | 48 半年了，我们组一个网工的职位一直没有招到人（我们是挺大的vendor）。我一直在电
面，凭大概印象统计，有1/4~1/3的人是no show，估计都有其他更好的坑跳了。面上的
人里，有一半是什么都不知道，最基本的ospf，bgp问题都答不上来的（答的连边都沾
不上），其中还有很多是大公司干过多年的，不知道怎么混的。然后剩下的一半，能答
上一半的基本问题，就给onsite了，然后其中又要有一小半不来onsite了。最后总算等
到onsite的人，稍微复杂点的问题，来个scenario的问题就趴下了。可见，这行的工作
是多么好找，以至于只有新手和混日子的才出来撒简历。
劝大家如果你的专业不好找工作，赶紧转吧，找个什么学校的telecom的专业两年
master，顺便搞几个cisco的证，立刻找年薪10万的工作。
update：
看到楼上很多人质疑，解释一下。
首先什么叫基本，我们公司就是搞路由器的，任何来面试的人用脚趾头想也应该知道我
们会问路由的东西，所以我觉得ospf和bgp是基本。ospf的几种lsa是什么算基本问题吗
？如果来面试的人连这都答不上来，你觉得他算合格的网工吗？们也想问... 阅读全帖 |
|
c***2
发帖数: 838 | 49 I don't hold forever, will exit when it's time
I trade these to earn some free shares
for example, if I sell 1900 BGP now, I can get 100 free shares plus some
lunch money :-)
BGP BORDERS GROUP MICHIGAN INC 2,000.000 $2.05 $4,100.00 $3,782.20 $
317.80
They may come back just as GGP |
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c******e
发帖数: 1581 | 50 BGP may go private. Like BKS, the traditional bookstore cannot go
anywhere. LeBow, the largest owner, bought the shares at average $0.5 at
the end of 2008. He won't lose anyway.
Don't buy BGP although there is a bankrupt play.
Amazon |
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